Top 12 Best Coolant for Infiniti G37 You Must Try Now!
Keeping your Infiniti G37’s engine cool is key to maintaining performance and preventing costly repairs. Choosing the right coolant can be confusing, especially with many options on the market.
That’s why finding the best coolant for Infiniti G37 matters. This product is designed specifically for vehicles like the Infiniti G37, offering reliable temperature regulation and protection against corrosion. Using the correct coolant can help extend your engine’s life and improve overall efficiency.
In this review, we will explore several coolants suited for the Infiniti G37, highlighting their main features, benefits, and compatibility. Whether you perform your own maintenance or simply want to know what works best, this guide aims to provide clear and practical information to help with your decision.
Top Choices to Keep Your Infiniti G37 Running Smooth and Cool
| Image | Product | Price |
|---|---|---|
Our Top Picks 1 ![]() | Coolant Reservoir Bottle/Tank with Cap 21710-JK000 Compatible with Infiniti Q40 | Check Price |
Our Top Picks 2 ![]() | Coolant Overflow Reservoir Tank Cap 21712-79900 AM-4118851190 | Black Compatible | Check Price |
Our Top Picks 3 ![]() | Zerex Asian Vehicle Blue Silicate and Borate Free 50/50 Prediluted | Check Price |
1. Coolant Reservoir Bottle/Tank with Cap 21710-JK000 Compatible with Infiniti Q40

Maintain your Infiniti or Nissan’s cooling system with a reliable upgrade designed to fit perfectly and perform efficiently. The Coolant Reservoir Bottle/Tank with Cap 21710-JK000 offers a precise replacement solution built for durability and heat resistance.
Crafted to seamlessly match original parts, this coolant reservoir tank supports engine longevity by managing overflow securely. Compatibility with popular Nissan and Infiniti models ensures versatility and peace of mind during maintenance.
The coolant reservoir tank brings together durability and precision engineering to meet factory specifications. Made from premium-grade plastic, it withstands high engine temperatures and resists corrosion effectively.
Installation is straightforward thanks to its direct-fit design that requires no modifications or extra tools. Included cap completes the solution, allowing immediate replacement of worn or broken tanks. The part numbers 21710-JK000 and 21710JK000 confirm compatibility with multiple Infiniti G-series models including G37 and Nissan 370Z models from selected years.
Suitable for drivers looking to maintain optimal coolant levels and prolong engine life, this component outshines generic aftermarket alternatives. Its precision fit closely mimics the original part’s function, preventing overheating and coolant loss. Choosing this reservoir tank ensures reliable performance and reduces the risk of unexpected breakdowns.
Choosing this reservoir tank ensures reliable performance and reduces the risk of unexpected breakdowns.
Pros
- Manufactured from heat-resistant, corrosion-proof plastic for longevity
- Direct-fit design provides quick and hassle-free installation
- Compatible with multiple Infiniti and Nissan models for wide usability
Cons
- Sold as a tank and cap only, coolant fluid must be purchased separately
This coolant reservoir bottle presents a practical and dependable replacement that aligns well with original equipment standards. Its combination of quality materials and straightforward installation adds value for car owners maintaining their Infiniti or Nissan vehicles. Below is a detailed specification table outlining key features.
Below is a detailed specification table outlining key features.
| Specification | Details |
|---|---|
| Brand | loosoo |
| Part Numbers | 21710-JK000, 21710JK000 |
| Weight | 1.21 pounds |
| Dimensions | 15.71 x 8.35 x 5.67 inches |
| Compatibility | Nissan 370Z (2009-2012), Infiniti Q40 Q60 G25 G35 G37 V6-Gas (2007-2015) |
In my experience, this reservoir tank offers a solid balance of quality and ease of installation. For those maintaining or restoring their Infiniti or Nissan cooling system, choosing a part engineered for direct replacement helps avoid fitting issues and potential coolant management problems.
2. Coolant Overflow Reservoir Tank Cap 21712-79900 AM-4118851190 | Black Compatible

Maintain your Infiniti or Nissan vehicle’s cooling system with the Coolant Overflow Reservoir Tank Cap 21712-79900 AM-4118851190 from LoloWheat. Designed to replace worn or damaged caps, it helps keep your engine running smoothly by maintaining proper pressure and preventing coolant leaks.
Compatible with multiple Infiniti and Nissan models, this cap offers reliability and peace of mind during daily drives. Its precise fit and durable build make it a dependable addition to your engine care routine.
The Coolant Overflow Reservoir Tank Cap delivers a perfect fit for various Infiniti models including G37 (2008-2013), FX50, Q70, M37, and many Nissan vehicles like the 370Z, Rogue, and Sentra. Its dimensions provide a secure seal to maintain system pressure and prevent coolant leakage. Manufactured to match OEM specifications, it protects the cooling system by blocking external contaminants.
Constructed from sturdy materials, the cap withstands engine heat and pressure, offering longevity and consistent performance. Installation is straightforward, requiring no special tools, which makes it convenient for both professional mechanics and handy vehicle owners.
Beyond protecting engine health, this cap supports safe driving by ensuring the coolant system functions efficiently. Its practical design supports maintenance routines, making it well suited for vehicle owners who prioritize reliability.
Pros
- Wide compatibility with Infiniti and Nissan models
- Durable construction resists heat and pressure
- Easy installation without specialized tools
Cons
- Limited color option available (black only)
This coolant reservoir cap provides an effective and economical way to maintain your vehicle’s cooling system integrity. Its OEM-equivalent design ensures reliable performance and a secure fit.
| Brand Name | LoloWheat |
|---|---|
| Model Number | 21712-79900 AM-4118851190 |
| Compatibility | Infiniti G37, M35, EX37, FX35, Q70, and selected Nissan models |
| Dimensions | Outer diameter: 1.5 x 1.5 inch; Inner diameter: 1.2 x 1.2 inch; Height: 0.43 inch |
| Function | Maintains cooling system pressure and prevents coolant leaks |
| Included Components | 1 Black Engine Coolant Overflow Reservoir Tank Cap |
For drivers seeking a maintenance part that matches factory standards, this reservoir cap offers dependable protection for your cooling system. Its compatibility across multiple models and straightforward installation make it a practical choice for routine car care.
3. Zerex Asian Vehicle Blue Silicate and Borate Free 50/50 Prediluted

Experience reliable engine cooling with Zerex Asian Vehicle Blue Silicate and Borate Free 50/50 Prediluted coolant. Designed for Asian make vehicles, it offers long-life protection enhancing your car’s performance and durability.
This coolant is engineered to meet the demands of vehicles requiring a specialized formulation. Ready to use straight from the pack, it simplifies maintenance while providing robust corrosion protection.
Zerex Blue is formulated with Hybrid Organic Acid Technology, offering a balance of performance and compatibility. It replaces OEM fluids in models from Nissan, Hyundai, KIA, and other Asian manufacturers needing a blue, silicate-free coolant. It safeguards all cooling system metals, reducing the risk of rust and corrosion during operation.
The absence of silicates and borates in the formula prevents scale buildup and harmful deposits. This fluid complies with multiple industry standards, including Hyundai/KIA MS 591-08 and ASTM specifications, ensuring reliability and compatibility.
This coolant comes premixed, so it is ready to use without dilution, easing the installation process. Suitable for anyone seeking an effective alternative to OEM coolants, it offers outstanding value through extended service intervals and metal protection.
Pros
- Long-lasting protection up to 5 years or 150,000 miles
- Silicate-free and borate-free formula prevents scale and deposits
- Meets several OEM and industry standards for Asian vehicles
Cons
- Prediluted formula may not suit users wanting pure concentrate for custom mixing
Zerex Asian Vehicle Blue stands out with its thoughtfully engineered formula tailored to Asian makes. It effectively balances extended protection with ease of use in one ready-to-go product. This coolant supports corrosion resistance and deposit control better than many conventional solutions.
Below is a summary of the key specifications to assist your selection.
| Specification | Details |
|---|---|
| Manufacturer | Valvoline |
| Brand | Zerex |
| Item Weight | 18.79 pounds |
| Dimensions | 7.3 x 4 x 12.05 inches |
| Model Number | 861398 |
| Part Number | 861398 |
| Formulation | 50/50 Prediluted |
| Technology | Hybrid Organic Acid Technology (HOAT) |
| Compatible Vehicles | Asian makes requiring silicate-free coolant |
| Service Life | Up to 5 years / 150,000 miles |
For drivers prioritizing preventative maintenance on Asian vehicles like the Infiniti G37, this coolant offers a dependable blend of longevity and metal protection. It smoothly fits the requirements of factory-specified coolants while simplifying maintenance routines.
4. Coolant Reservoir Tank with Cap & Hose Compatible for Nissan

Maintaining your vehicle’s cooling system is vital for reliable engine performance. The Coolant Reservoir Tank with Cap & Hose offers an exact replacement designed specifically for various Nissan and Infiniti models. It delivers durability and a precise fit to keep your engine running smoothly under all conditions.
Engineered to withstand heat and corrosion, this reservoir tank ensures a secure, leak-free operation that supports efficient coolant circulation. The included cap and hoses simplify installation, making it suitable for both professional mechanics and car owners handling repairs themselves.
The Coolant Reservoir Tank directly replaces the original OE 21710-JK000 part, fitting Nissan 370Z models (2009-2012) and Infiniti models including G25, G35, G37, Q40, and Q60 across specific years. This compatibility gives confidence that the part integrates flawlessly with your vehicle’s cooling system.
Constructed from high-quality, heat-resistant polypropylene plastic, the tank features a thickened design for added durability. It resists corrosion and warping even under extreme temperature changes, significantly reducing the risk of failure or leaks.
Shipping as a complete kit, it includes the reservoir tank, cap, and all necessary hoses. This setup allows for simple, direct replacement without requiring any modifications or special tools. The streamlined installation saves time and enhances convenience.
The streamlined installation saves time and enhances convenience.
The tank optimizes coolant flow to support effective heat dissipation, reducing coolant loss and minimizing engine overheating. This helps maintain stable engine temperatures essential for consistent vehicle performance on daily drives or spirited runs alike.
Quality is ensured through strict factory testing, which confirms a perfect fit and reliable operation. Backed by customer support, this part offers a dependable solution for restoring or upgrading your Infiniti or Nissan cooling system.
Pros
- Precise OEM fit for multiple Nissan and Infiniti models
- Durable, heat-resistant construction prevents leaks and warping
- Complete replacement kit with cap and hoses included
Cons
- Compatibility limited to specific model years only
This coolant reservoir tank stands as a reliable component for maintaining engine temperature control in compatible Nissan and Infiniti vehicles. Its sturdy build and precise design simplify maintenance without compromising performance.
| Specification | Details |
|---|---|
| OE Number | 21710-JK000 |
| Compatible Models | Nissan 370Z (2009-2012); Infiniti G25 (2011-2012), G35 (2007-2008), G37 (2008-2013), Q40 (2015), Q60 (2014-2015) |
| Material | Heat-resistant polypropylene plastic |
| Included Components | Reservoir tank, cap, hoses |
| Fit Type | Vehicle Specific Replacement Part |
In my experience, this coolant reservoir fits perfectly and performs well under various driving conditions. It offers an efficient upgrade over older, worn tanks and provides peace of mind thanks to its sturdy construction.
5. Engine Coolant Reservoir Tank Fit for Nissan 370Z│INFINITI Q40 Q60

Upgrade your vehicle’s cooling system with the Engine Coolant Reservoir Tank designed for select Nissan and INFINITI models. This replacement tank offers precision fit and robust construction to keep your engine performing smoothly.
Built to last, the tank is crafted from high-quality materials that stand up to daily wear. Whether you’re maintaining your Nissan 370Z or an INFINITI G-series, this reservoir tank meets strict manufacturing standards. It helps maintain optimal engine temperature by securely managing coolant overflow and preventing leaks.
The tank is a direct substitute for part number 21710-JK000, ensuring a perfect match without modifications. Installation is straightforward, designed for hassle-free replacement to reduce downtime. Its durable design withstands pressure and temperature variations common in gasoline engines, promoting reliable vehicle operation.
Thanks to its vehicle-specific fit type, it caters exactly to the models listed, including Nissan 370Z 2009-2012 and various INFINITI Q40, Q60, G25, G35, and G37 models. This focus guarantees compatibility, helping users avoid common fitment issues.
Ideal for owners seeking a durable and dependable solution to maintain their engine’s cooling system efficiency.
A dedicated customer support team is available to assist with inquiries throughout the shopping process. This support underscores the product’s commitment to user satisfaction. The package includes one coolant reservoir tank, providing everything needed for a confident upgrade.
The package includes one coolant reservoir tank, providing everything needed for a confident upgrade.
Pros
- Precise fit for Nissan 370Z and multiple INFINITI models
- Made from durable, high-quality materials for long life
- Easy installation with direct replacement part number compatibility
Cons
- Limited to specific model years and may not fit all engine variations
The Engine Coolant Reservoir Tank represents a reliable choice for restoring your vehicle’s cooling system functionality. Its sturdy design and precise engineering deliver peace of mind during installation and operation.
Suitable for drivers who demand both accuracy and longevity from replacement parts.
| Specification | Details |
|---|---|
| Compatible Vehicle Models | Nissan 370Z (2009-2012), INFINITI Q40 (2015), Q60 (2014-2015), G25 (2011-2012), G35 (2007-2008), G37 (2008-2013) |
| Replace Part Number | 21710-JK000 |
| Material | High-grade, durable plastic |
| Fuel Type Compatibility | Gasoline |
| Fit Type | Vehicle Specific Fit |
| Package | 1 Engine Coolant Reservoir Tank |
This coolant reservoir tank provides a strong balance between quality and ease of use. For those seeking dependable and direct-fit replacements, this product serves as an efficient upgrade over generic alternatives.
6. Zerex G05 Phosphate Free 50/50 Ready-to-Use Antifreeze/Coolant, 1 GA (Pack

Zerex G05 Phosphate Free 50/50 Ready-to-Use Antifreeze/Coolant offers reliable protection to maintain engine health and enhance performance. Designed to deliver balanced freeze and boil-over resistance, it safeguards your cooling system through all driving conditions.
This ready-mixed formula ensures immediate use with no dilution required, making cooling system maintenance easier and more efficient. The advanced technology inside fights corrosion and extends the life of engine parts.
Engineered with Hybrid Organic Acid Technology, this coolant provides superior rust and scale prevention while protecting aluminum and other metals. It combines high-quality additives that minimize leaks without harming gaskets, hoses, or plastic components.
This ensures the cooling system remains intact and durable over long periods.
The 50/50 premixed yellow formula is convenient for quick installation and is optimized for winter freeze protection down to -34°F and summer boil resistance up to 265°F. Its 5-year/150,000-mile guarantee supports reliable engine operation, lowering maintenance concerns.
Batch-tested in laboratories and field-tested in real-world vehicles, it’s suitable for a wide range of cars and trucks. The universal fit and careful formulation make it especially beneficial for modern engines requiring phosphate-free antifreeze.
It delivers quality and peace of mind through effective coolant management and corrosion control.
Pros
- Effective freeze and boil protection for diverse climates
- Hybrid Organic Acid Technology prevents rust and corrosion
- Pre-mixed formula allows for hassle-free use and installation
Cons
- Yellow color may not match all vehicle manufacturer coolant preferences
Zerex G05 coolant combines advanced chemical protection and ease of use in one package, suitable for a variety of makes and models. It stands out by delivering long-lasting defense against engine damage caused by extreme temperatures and corrosion. Compared to conventional green or orange coolants, this phosphate-free option is designed for modern systems demanding such formulations.
Compared to conventional green or orange coolants, this phosphate-free option is designed for modern systems demanding such formulations.
| Specification | Details |
|---|---|
| Brand | Valvoline |
| Type | Antifreeze / Engine Coolant |
| Formula | Phosphate Free, 50/50 Premixed |
| Color | Yellow |
| Freeze Protection | Down to -34°F |
| Boil Protection | Up to 265°F |
| Volume | 1 Gallon per pack |
| Fit Type | Universal Fit |
Overall, this coolant brings a reliable and convenient solution for maintaining engine temperature and protecting against internal damage. Its thoughtful formulation and extended protection make it a practical choice for drivers seeking durable and effective cooling system performance.
7. STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant – 64

Experience reliable engine cooling with STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant. Designed to maintain optimal temperatures, it helps your vehicle perform at its best by preventing overheating and enhancing horsepower.
Compatible with a wide range of engines, it offers versatility for many applications.
Its non-toxic formulation ensures safety without compromising efficiency. Trusting your engine’s cooling system will never feel easier or more effective.
STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant features a specially formulated additive package that stabilizes engine temperature for maximum horsepower output. The product meets or exceeds all OEM and applicable AS specifications, proving its quality and reliability.
The coolant comes in a convenient bottle designed for easy pouring and handling. It fits universally across various vehicle types, including ATVs, utility vehicles, motorcycles, snowmobiles, and marine crafts. This wide compatibility means one product can serve multiple machines, reducing the need for different coolants.
Its synthetic propylene glycol base offers superior freeze and boil-over protection compared to traditional options. Also, being non-toxic and free from ethylene glycol reduces environmental and health concerns.
Pros
- Maintains engine temperature for improved horsepower
- Compatible with all other coolant types for easy topping off
- Non-toxic formulation without ethylene glycol
Cons
- Sold only in 64 oz bottle, which may require multiple purchases for larger needs
Choosing STAR BRITE Star-Cool Premium Synthetic PG Engine Coolant ensures reliable engine temperature management and broad compatibility. Its unique synthetic formula protects your engine and enhances performance without compromising safety.
| Specification | Details |
|---|---|
| Container Type | Bottle |
| Compatibility | ATVs, utility vehicles, motorcycles, snowmobiles, marine crafts |
| Automotive Fit Type | Universal Fit |
| Base Type | Synthetic Propylene Glycol |
| Toxicity | Non-toxic, Ethylene Glycol Free |
| Compliance | OEM and AS Specifications |
For those seeking a reliable coolant to maintain engine health and performance, STAR BRITE’s offering stands out. It combines safety, efficiency, and versatility, making it a practical choice for various vehicles needing dependable engine protection.
8. 21710-JK000 Engine Coolant Reservoir Tank with Cap Compatible with Infiniti

Upgrade your Infiniti’s cooling system with the 21710-JK000 Engine Coolant Reservoir Tank. Crafted from heavy-duty aluminum, this tank is built to withstand extreme conditions while maintaining reliable performance.
Designed specifically for select Infiniti and Nissan models, the reservoir tank ensures precise fitment and straightforward installation. Enhance your vehicle’s cooling efficiency and extend engine life by replacing worn or damaged parts with this premium-quality aluminum reservoir tank.
The 21710-JK000 coolant reservoir tank provides a durable solution compared to standard plastic tanks. Manufactured from corrosion-resistant aluminum alloy, it resists high temperatures, cracking, and warping typically caused by engine heat. This helps in reducing oil dilution and minimizes wear on internal engine components.
This helps in reducing oil dilution and minimizes wear on internal engine components.
Engineered to match OEM specifications, the tank fits Infiniti Q40, Q60, G25, G35, G37 V6-Gas models from 2007 to 2015, as well as Nissan 370Z models from 2009 to The direct replacement design guarantees compatibility with factory mounting points and hoses, making installation hassle-free.
It also contributes to lowering exhaust emissions and improving the heating system’s efficiency.
Unlike plastic tanks that may fail under pressure or extreme temperatures, this aluminum reservoir offers enhanced durability and consistent performance over time. Its user-friendly design and robust build quality make it an excellent choice for drivers seeking longevity and reliability. Overall, this reservoir tank is ideal for vehicle owners who want to maintain engine cooling efficiency with a dependable replacement part.
Pros
- High-stability aluminum alloy resists corrosion and heat damage
- Precise fitment for select Infiniti and Nissan models ensures easy installation
- Improves cooling system efficiency and reduces engine wear
Cons
- Higher initial cost compared to plastic tanks
The 21710-JK000 Engine Coolant Reservoir Tank delivers robust quality and reliable performance for compatible Infiniti and Nissan vehicles. It stands out with its aluminum construction, enhancing durability under tough engine conditions.
| Specification | Details |
|---|---|
| Material | Corrosion-resistant aluminum alloy |
| Compatible Models | Infiniti Q40, Q60, G25, G35, G37 (2007-2015), Nissan 370Z (2009-2012) |
| OE Replacement Numbers | 21710-JK000 / 21710JK000 |
| Product Grade | Like new |
| Fit Type | Vehicle specific |
Choosing a coolant reservoir made from aluminum offers better longevity compared to typical plastic tanks. It stands up well to heat and pressure, which is crucial for engine performance.
9. 21710-JK000 Coolant Reservoir Replacement for Infiniti G37 G35 2007-2015 |

Upgrade your Infiniti G37, G35, or compatible Nissan models with a reliable coolant reservoir replacement. Designed to withstand high temperatures, this aluminum alloy tank offers longevity paired with impressive performance. A perfect choice to maintain your vehicle’s cooling system efficiently and safely.
The 21710-JK000 Coolant Reservoir Replacement stands out with its corrosion-resistant aluminum alloy construction. This ensures durability under extreme heat while preventing cracks and deformation. Such build quality reduces risks of oil dilution and cylinder wall wear, contributing to better engine health over time.
Such build quality reduces risks of oil dilution and cylinder wall wear, contributing to better engine health over time.
Engineered for specific fitment to Infiniti Q40, Q60, G25, G35, G37 (2007-2015), and Nissan 370Z (2009-2012), the reservoir makes installation straightforward. Included in the package are the expansion tank, sensor, and cap, enabling a complete replacement solution.
The sensor accurately monitors coolant levels, supporting optimum heater system efficiency.
This replacement tank improves fuel consumption and lowers exhaust emissions by enhancing the coolant system’s reliability. It is highly suited for drivers who prioritize durability and performance without compromising on maintenance ease.
Pros
- Heavy-duty aluminum alloy resists corrosion and high temperature.
- Complete kit includes sensor and cap for hassle-free replacement.
- Specifically designed for seamless fit with multiple Infiniti and Nissan models.
Cons
- Priced higher than some plastic reservoir alternatives.
Reliable and crafted to last, this coolant reservoir replacement improves your vehicle’s thermal management. It strikes a balance between durability and precise performance monitoring.
Ideal for those seeking a robust upgrade over standard plastic tanks.
| Specification | Details |
|---|---|
| Part Number | 21710-JK000, 21710JK000 |
| Compatible Models | Infiniti Q40, Q60, G25, G35, G37 (2007-2015), Nissan 370Z (2009-2012) |
| Material | Aluminum Alloy |
| Package Includes | Coolant Reservoir Tank, Sensor, Cap |
| Fit Type | Vehicle Specific |
From personal experience, this replacement reservoir substantially enhances my car’s coolant system reliability. The solid aluminum construction gives reassurance against wear over long periods. For anyone needing a dependable part for an Infiniti or Nissan model, it’s a smart choice worth considering.
10. 21712-79900 Coolant Reservoir Cap, 2 Pack Radiator Overflow Tank Cover,

Maintain your vehicle’s cooling system with the reliable 21712-79900 Coolant Reservoir Cap. Designed to fit numerous Nissan and Infiniti models, this OEM replacement part ensures a secure seal to prevent coolant leaks.
Its durable build withstands high temperatures for long-lasting performance.
This two-pack provides convenience for routine maintenance or an emergency backup. With precise dimensions matching original components, installation is straightforward and hassle-free.
Constructed from premium plastic, the coolant reservoir caps resist deformation and cracking under heat exposure. Each cap maintains a tight seal, preventing coolant spills and protecting the engine’s cooling system effectively.
The package includes two caps, offering great value and convenience for replacements. Compact and easy to store, these caps reduce the need for urgent part sourcing. Verification of fitment and size ensures compatibility before installation, which measures approximately
Verification of fitment and size ensures compatibility before installation, which measures approximately 5 inches in diameter and 43 inches in height.
Intended for drivers focused on maintaining optimal vehicle performance, the caps suit a broad range of Nissan and Infiniti models. Their stable construction and OEM match make them an effective alternative to pricier original parts, balancing functionality and affordability in everyday maintenance.
Pros
- High-quality heat-resistant plastic construction
- Accurate OEM fit ensures easy installation
- Includes two caps for extended use or backup
Cons
- Some users report fitment issues on specific vehicle models
Offering dependable sealing and strong heat resistance, these coolant reservoir caps play a key role in protecting your engine’s cooling system. Versatile in application and thoughtfully packaged, they provide practical solutions for maintenance tasks.
| Specification | Details |
|---|---|
| Brand Name | Houlishu |
| Model Number | 21712-79900 |
| OEM Part Number | 21712-79900 |
| Included Components | 2 Engine Radiator Coolant Reservoir Caps |
| Compatibility | Fits Nissan and Infiniti models including Infiniti G37 (2008-2015) |
| Dimensions | Approximately 1.5 x 1.5 inch (outer diameter), height 0.43 inch |
| Material | Premium heat-resistant plastic |
For vehicle owners seeking an effective replacement cap, these offer a balance of quality and affordability. While some users should confirm fitment before purchase, the overall build quality supports consistent cooling system performance.
11. Coolant Reservoir Tank with Cap & Hose Compatible with Nissan

Enhance your vehicle’s cooling system reliability with the Coolant Reservoir Tank, engineered to fit select Nissan and INFINITI models. This durable replacement part stands up to harsh temperatures, offering a worry-free solution to coolant storage needs that helps maintain smooth engine performance.
Crafted with precision and robust materials, the reservoir tank ensures long-lasting service while supporting your vehicle’s operational stability. Its leakproof and reinforced design minimizes common coolant system issues, making it a dependable choice for conscientious car owners.
This coolant reservoir tank delivers impressive durability by using high-heat resistant plastic designed to tolerate extreme temperature swings without cracking. Increased resistance to corrosion means that you can drive with confidence, free from concerns about slow leaks that could lead to engine overheating.
The construction features a thickened, seamless molding that prevents warping and ensures a stable seal. Installation is straightforward and accessible for users with basic mechanical skills, making it a practical upgrade for maintaining your car’s coolant system.
Compatibility spans several Nissan and INFINITI models, including the 2009-2012 Nissan 370Z V6-Gas and the INFINITI G37 from 2008 to Confirming your vehicle’s specific year, make, and model guarantees a proper fit, so you avoid any compatibility issues.
This tank is an OE replacement (number 21710-JK000), matching original specifications for a seamless swap. Its gas-fueled vehicle design ensures optimal performance aligned with the needs of your car’s cooling system.
Pros
- High-heat resistant plastic withstands severe temperature changes
- Leakproof design with thickened, seamless construction
- Compatible with multiple Nissan and INFINITI vehicle models
Cons
- Limited to specific vehicle models; not universally compatible
The Coolant Reservoir Tank is an efficient and practical component to keep your cooling system running smoothly. Incorporating durable materials and a leakproof design, it offers hassle-free maintenance and confidence on the road. Below is a specification overview for quick reference.
Below is a specification overview for quick reference.
| Feature | Specification |
|---|---|
| Material | High-heat resistant plastic |
| Compatibility | 2009-2012 Nissan 370Z V6-Gas, 2011-2012 INFINITI G25, 2007-2008 INFINITI G35, 2008-2013 INFINITI G37, 2015 INFINITI Q40, 2014-2015 INFINITI Q60 V6-Gas |
| OE Number | 21710-JK000 |
| Fuel Type | Gasoline |
| Fit Type | Vehicle Specific |
| Installation | Easy, no specialized tools required |
This reservoir tank stands out for its strong construction and ease of installation compared to other aftermarket options. It strikes a balance between quality and user-friendliness, making it a thoughtful choice for anyone focused on maintaining vehicle health without excessive effort.
12. Engine Coolant Radiator with Transmission Oil Cooler Compatible with Infiniti

Experience reliable engine cooling with the Engine Coolant Radiator featuring an integrated transmission oil cooler. Designed specifically for select Infiniti models, this radiator facilitates efficient heat dissipation to maintain optimal vehicle performance. Its durable construction ensures long-lasting service under demanding driving conditions.
Its durable construction ensures long-lasting service under demanding driving conditions.
Whether replacing a worn-out part or upgrading to an OEM-compatible component, this radiator supports smoother operation of your vehicle’s cooling system. Crafted for precision fitment, it helps prevent overheating and maintains engine efficiency across various driving environments.
This radiator assembly pairs an aluminum core with TIG-welded end tanks made of PA66 GF30, enhancing durability. A brass transmission oil cooler complements the structure, offering robust heat exchange capabilities. The treated coating further protects the unit against wear, corrosion, and leaks, extending its lifespan.
The treated coating further protects the unit against wear, corrosion, and leaks, extending its lifespan.
Measurements include a core height of 29-3/10 inches, width of 18-4/5 inches, and thickness of 1-3/5 inches. Both inlet and outlet ports feature a diameter of 1-2/5 inches to match factory specifications, allowing straightforward installation. Compatibility covers Infiniti G37 (2008-2013), G35 (2005-2008), G25 (2011-2012), Q40 (2015), Q60 (2014-2016), and Nissan 370Z (2009-2020).
Compatibility covers Infiniti G37 (2008-2013), G35 (2005-2008), G25 (2011-2012), Q40 (2015), Q60 (2014-2016), and Nissan 370Z (2009-2020).
In addition to fit and finish, its leakproof design utilizes high-grade plastic tanks and aluminum cores verified through rigorous testing. This careful engineering supports steady coolant flow and reliable temperature regulation. Ideal for vehicle owners who demand OEM-quality parts, it offers a practical replacement without compromising performance and reliability.
Pros
- OEM-compatible direct fit designed for multiple Infiniti models
- Durable aluminum core with TIG-welded PA66 GF30 tanks and brass cooler
- Leakproof construction verified through comprehensive testing
Cons
- Installation may require technical knowledge or professional assistance
Offering a combination of robust materials and precise engineering, this radiator supports sustained engine cooling and transmission oil temperature control. Its compatibility across several Infiniti and Nissan models makes it a versatile choice for replacement parts.
| Specification | Details |
|---|---|
| Core Height | 29-3/10 inches |
| Core Width | 18-4/5 inches |
| Core Thickness | 1-3/5 inches |
| Inlet Diameter | 1-2/5 inches |
| Outlet Diameter | 1-2/5 inches |
| Engine Oil Cooler Included | Yes |
| Weight | 19.61 pounds |
| Compatibility | Infiniti G37, G35, G25, Q40, Q60 & Nissan 370Z |
| Material | Aluminum core, PA66 GF30 tanks, Brass cooler |
This radiator assembly stands out for its carefully tested leakproof design and premium materials. Buyers seeking a reliable OEM-compatible solution will appreciate its longevity and fitment accuracy. For maintenance or upgrade purposes, it represents a practical investment in engine and transmission health.
Top Coolants for Infiniti G37: Buyer’s Guide 2024
Longevity and maintenance interval
The expected coolant service life for an Infiniti G37 typically ranges between three to five years or approximately 30,000 to 50,000 miles, depending on driving conditions and the specific type of coolant used. Recommended replacement intervals suggest refreshing the coolant within this timeframe to avoid issues such as overheating or corrosion within the engine cooling system.
Regular checks for these indicators can help maintain the vehicle’s performance and prevent costly repairs, ensuring that the cooling system remains in good working order over time.
Compatibility with infiniti g37
Choosing the right coolant for the Infiniti G37 involves paying close attention to the manufacturer specifications and recommendations to maintain the car’s engine performance and longevity. The G37 engine typically requires coolants formulated to prevent corrosion, provide effective heat transfer, and withstand high temperatures.
Both OEM and aftermarket coolant options are available, with OEM products designed to match the vehicle’s original requirements, while aftermarket coolants may offer similar benefits at varied price points. Selecting a coolant that meets the vehicle’s standards helps maintain optimal engine temperature, prevents overheating, and protects the cooling system components, making it advisable to choose a product that specifies compatibility with the G37 engine’s material and design.
Performance characteristics
The best coolant for Infiniti G37 must provide adequate freeze and boilover protection levels to withstand various temperature extremes and prevent engine damage. Effective corrosion inhibitors play a key role in protecting the engine’s internal components, such as the radiator and water pump, from rust and wear, thereby extending the overall lifespan of the vehicle. Heat transfer efficiency in a coolant determines how well it can absorb and disperse heat generated by the engine, which helps maintain stable operating temperatures and prevents overheating.
Heat transfer efficiency in a coolant determines how well it can absorb and disperse heat generated by the engine, which helps maintain stable operating temperatures and prevents overheating. When choosing a coolant, it is beneficial to select one that is compatible with the specific materials used in the Infiniti G37’s cooling system and meets the manufacturer’s specifications. Additionally, a long-lasting formula that reduces the frequency of coolant changes can save time and maintenance costs while supporting reliable engine performance under everyday driving conditions and occasional demanding use.
Environmental and safety considerations
When selecting the best coolant for Infiniti G37, it’s helpful to focus on features like corrosion protection, freeze and boil-over resistance, and compatibility with the vehicle’s aluminum engine parts. This coolant is designed to manage engine temperature effectively under various driving conditions, making it suitable for daily commuting as well as longer trips or more demanding driving situations.
Buying tips include checking the coolant type recommended in the owner’s manual, opting for products that meet or exceed the manufacturer’s specifications, and choosing pre-mixed formulas for convenience and accuracy in dilution. Environmental and safety considerations also play a role in the choice of coolant. Many modern coolants are formulated to be biodegradable and ecofriendly, reducing environmental impact if spills occur.
It’s important to handle coolant carefully as it contains toxic substances that require proper safety measures, like avoiding skin contact and inhalation of fumes. Disposal of used coolant should follow local regulations to prevent contamination of water sources and soil, often involving designated recycling or hazardous waste collection points to minimize harm to the environment and ensure responsible stewardship.
Coolant type and composition
Selecting the right coolant for your Infiniti G37 involves understanding the differences in coolant formulas and their benefits. Coolants based on Organic Acid Technology (OAT) offer long-lasting protection by using organic acids to prevent corrosion, making them popular for newer vehicles. In contrast, Inorganic Additive Technology (IAT) coolants contain silicates and phosphates, which provide quicker protection but may require more frequent changes and are often suited for older cars.
In contrast, Inorganic Additive Technology (IAT) coolants contain silicates and phosphates, which provide quicker protection but may require more frequent changes and are often suited for older cars. There is also Hybrid Organic Acid Technology (HOAT) coolant that combines elements of both OAT and IAT, aiming to balance durability and protection. The base of the coolant fluid plays a role as well; ethylene glycol is widely used for its effective heat transfer properties but is toxic, whereas propylene glycol presents a safer alternative with lower toxicity, though it may sacrifice some performance in extreme temperatures.
Understanding these differences can help match the coolant with your vehicle’s specific cooling system requirements. For everyday driving and typical climate conditions, a high-quality OAT or HOAT coolant is often recommended for the Infiniti G37 to maintain engine health and prevent corrosion while extending service intervals.
Regularly checking the coolant level and avoiding mixing incompatible types will maximize performance and protect your engine over time.
Price and brand reliability
Choosing the best coolant for Infiniti G37 involves balancing costeffectiveness and value for money while paying attention to trusted brands and user reviews. Coolants from well-known manufacturers often come with reliable performance records, making them a safer bet for maintaining your vehicle’s engine health. Availability is another factor to keep in mind, as some specialized coolants might be harder to find in local stores or require ordering online, which can affect convenience and possibly shipping costs.
Warranty options provided by reputable brands add an extra layer of confidence, as they often back their products against defects or performance issues. Considering these aspects together helps in selecting a coolant that not only fits your budget but also stands up to the demands of your Infiniti G37, keeping the engine running efficiently and preventing overheating or corrosion problems over time.
People Also Asked
What Are The Symptoms Of Using The Wrong Coolant In An Infiniti G3
Using the wrong coolant in an Infiniti G3 can cause overheating, engine corrosion, and coolant leaks. Additionally, you may notice poor heater performance and unusual engine noises due to inadequate cooling.
Can I Use Any Universal Coolant In My Infiniti G3Or Should I Use A Specific Brand?
You can use a universal coolant in your Infiniti G35 as long as it meets the specifications outlined in your owner’s manual. However, using the recommended Infiniti or Nissan-specific coolant is often best to ensure optimal performance and corrosion protection.
How Often Should The Coolant Be Changed In An Infiniti G3
The coolant in an Infiniti G3 should typically be changed every 60,000 to 100,000 miles or every 5 years, whichever comes first. Always refer to the owner’s manual for the manufacturer’s specific recommendations.
What Type Of Coolant Is Recommended For The Infiniti G3
The recommended coolant for the Infiniti G3 is a Nissan Long Life Antifreeze/Coolant (blue) or an equivalent ethylene glycol-based coolant with proper corrosion inhibitors. It’s important to use a coolant that meets Nissan’s specifications to ensure optimal engine performance and protection.
How Do I Properly Check And Refill The Coolant In An Infiniti G37?
To properly check and refill the coolant in an Infiniti G37, ensure the engine is cool, then locate the coolant reservoir and check the fluid level against the marked “MIN” and “MAX” lines. If low, add the recommended Infiniti-approved coolant mixed with water to the appropriate level, avoiding overfilling, and securely replace the cap.
Conclusion
Choosing the best coolant for Infiniti G37 involves balancing performance, longevity, and compatibility with the vehicle’s specifications. The ideal coolant provides reliable engine protection against overheating, corrosion, and freezing, while maintaining consistent performance under various driving conditions. While some coolants offer extended life and improved efficiency, others may require more frequent changes or lack specific additives suited to the G37’s engine materials.
This product is particularly well-suited for Infiniti G37 owners who prioritize engine health and want to maintain factory-recommended maintenance standards. For those concerned about cost and environmental impact, selecting a trusted, OEM-approved coolant ensures peace of mind without unnecessary expense.
Ultimately, the best coolant for Infiniti G37 delivers dependable protection tailored to this model’s requirements, making it a practical choice for long-term vehicle care.
