Features & Benefits
- Part Number: 21712-79900
- Fits for Infiniti and Nissan models
- Compatible with several years of model variations
- Package Includes: 1* Radiator Reservoir Cap
- High-quality replacement part
- Easy to install
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AUTOKAY Coolant Overflow Reservoir Tank Cap Radiator Reservoir Cap for Nissan Infiniti 21712-79900 - Yellow
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Radiator Reservoir Cap Replace Part Number: 21712-79900, Fits for various Infiniti and Nissan models.
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What Stands Out
Durable Material
Crafted from high-quality materials, this cap ensures long-lasting performance and resistance against wear, providing reliable sealing for your coolant reservoir.
Vehicle Compatibility
Designed specifically for Nissan and Infiniti models, this cap guarantees a perfect fit, eliminating worries about leaks or improper sealing.
Eye-catching Color
The vibrant yellow hue not only enhances visibility but also adds a stylish touch to your engine compartment, making maintenance checks easier and more attractive.
Product Details
- Radiator Reservoir Cap Replace Part Number: 21712-79900
- Fitment for various Nissan and Infiniti models ranging from 2003 to 2017
- Includes models such as EX35, FX37, G37, QX50, 350Z, Cube, Juke, Rogue, and more
- Designed to be a direct replacement for the original coolant overflow reservoir tank cap
- Package includes 1 Radiator Reservoir Cap
- Color: Yellow
| Brand Name | AUTOKAY |
| Model Number | 21712-79900 |
| Manufacturer Part Number | 21712-79900 |
| OEM Equivalent Part Number | 21712-79900 |
| Manufacturer | AUTOKAY |
| Material Type | Metal |
| Color | Yellow |
| Exterior Finish | Stainless Steel |
| Style Name | Modern |
| Item Weight | 0.02 Kilograms |
| Compatible with Vehicle Type | Car, Truck |
| Automotive Fit Type | Vehicle Specific Fit |
| Closure Type | Twist-On |
| Brand | AUTOKAY |
| Material | Metal |
| Vehicle Service Type | Car, Truck |
Who Should Buy?
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Nissan Owners
Ideal for Nissan vehicle owners replacing their coolant reservoir caps for improved reliability and function.
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DIY Mechanic
Perfect for DIY mechanics who want a cost-effective solution for their radiator reservoir needs without compromises.
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Infiniti Enthusiasts
Great choice for Infiniti enthusiasts looking to customize or restore their vehicles with high-quality replacement parts.
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High-Performance Cars
Not suitable for high-performance vehicles that require specialized coolant caps designed for extreme conditions.
Product Description
AUTOKAY Coolant Overflow Reservoir Tank Cap Radiator Reservoir Cap for Nissan Infiniti 21712-79900 - Yellow
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the primary function of the AUTOKAY Coolant Overflow Reservoir Tank Cap?
Answer: The AUTOKAY Coolant Overflow Reservoir Tank Cap is designed to seal the coolant overflow reservoir, keeping the coolant contained and maintaining the correct pressure within the cooling system. This ensures that the engine stays at the optimal temperature during operation, preventing overheating. A well-sealed cap prevents coolant loss and helps the vehicle function efficiently, particularly important in performance or high-temperature scenarios, such as during long drives or heavy traffic. -
Question:
Is the AUTOKAY cap compatible with all Nissan and Infiniti models?
Answer: The AUTOKAY Coolant Overflow Reservoir Tank Cap is specifically designed to fit select Nissan and Infiniti models that use the part number 21712-79900. It’s crucial to check your vehicle's specifications to ensure compatibility. This dedicated design means you can trust that the cap will fit securely and perform effectively, especially if you’re replacing an old or damaged cap, ensuring your vehicle’s cooling system works properly. -
Question:
How do I install the AUTOKAY Coolant Overflow Reservoir Tank Cap?
Answer: Installing the AUTOKAY Coolant Overflow Reservoir Tank Cap is straightforward. First, ensure that the engine is cool to avoid any risk of burns. Locate your coolant overflow reservoir, remove the old cap by turning it counterclockwise, and position the new AUTOKAY cap on the reservoir. Press down and turn clockwise until it is securely fastened. This simple installation can prevent future coolant leaks, helping protect your engine from overheating. -
Question:
What materials is the AUTOKAY coolant cap made from?
Answer: The AUTOKAY Coolant Overflow Reservoir Tank Cap is manufactured from high-quality plastic designed to withstand heat and corrosive coolant components. This material choice ensures durability over time, even under extreme temperatures, making it an excellent choice for maintaining vehicle integrity. The yellow color also adds a visual element, which can help you quickly identify the cap among other engine components, essential for any DIY mechanics or car enthusiasts. -
Question:
Will the AUTOKAY cap prevent coolant leaks effectively?
Answer: Yes, the AUTOKAY Coolant Overflow Reservoir Tank Cap is engineered to create a tight seal that effectively prevents coolant leaks. This is crucial for maintaining the appropriate coolant levels and preventing air from entering the cooling system, which can lead to overheating. Regular checks and replacements of the cap can extend the life of your engine. It's advisable to inspect the cap periodically, especially after long trips, to ensure it remains in good condition. -
Question:
What should I do if my coolant overflow reservoir cap is not staying on?
Answer: If your AUTOKAY Coolant Overflow Reservoir Tank Cap is not staying on, it may be due to a damaged or worn gasket, or the threads of the reservoir may be compromised. Removing the cap and inspecting these areas for any signs of wear can help identify the problem. In such cases, replacing the cap with a new one or consulting with a mechanic can ensure optimal performance. A secure cap is essential for preventing coolant loss and maintaining engine efficiency. -
Question:
Can using a non-OEM cap affect my vehicle's performance?
Answer: Using a non-OEM cap can potentially lead to performance issues if it does not seal properly or is incompatible with your vehicle. The AUTOKAY Coolant Overflow Reservoir Tank Cap is specifically designed for Nissan and Infiniti models, ensuring a proper fit. Using the correct cap maintains system pressure and prevents overheating, making your cooling system work effectively. This is especially important during hot weather or heavy towing, where engine temperatures can rise significantly. -
Question:
How can I tell if my coolant cap is failing?
Answer: Signs of a failing coolant cap include visible coolant leaks around the reservoir, difficulty in opening the cap, or if it appears cracked or damaged. The smell of coolant or a rise in engine temperature can also indicate issues with the cap. Addressing these issues quickly with a replacement, such as the AUTOKAY cap, can prevent more serious engine problems. Regular maintenance checks can help catch these issues before they escalate. -
Question:
What is the color significance of the AUTOKAY cap?
Answer: The yellow color of the AUTOKAY Coolant Overflow Reservoir Tank Cap serves both practical and aesthetic purposes. Yellow usually indicates coolant-related components, making it easier to identify when servicing the engine. This color differentiation is particularly beneficial for DIY enthusiasts who want to quickly locate the reservoir during routine checks or repairs, ensuring they can maintain their vehicle’s cooling system effectively. -
Question:
Where can I buy the AUTOKAY Coolant Overflow Reservoir Tank Cap in Australia?
Answer: You can purchase the AUTOKAY Coolant Overflow Reservoir Tank Cap for Nissan and Infiniti models from Ubuy. Ubuy offers a wide range of automotive products, ensuring that you receive a genuine and compatible product for your vehicle. Browsing Ubuy's website will provide you with easy access to purchase the cap efficiently, making sure your coolant system remains intact and your engine operates smoothly.
AUTOKAY Coolant Recovery Kits 21712-79900 Editorial Review
This coolant reservoir cap is a great fit for a variety of different car models including Hondas, Nissans and Mazdas. Customers consistently praise how easy it is to install and its ability to securely close the radiator overflow reservoir. Some customers even claim after searching through other shops and stores, they were finally able to find a product that fits their car using this cap. Overall, customers who have purchased this cap have been satisfied with their experience and would recommend this product to others.
Customer Reviews & Ratings
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Pros
- Fits a variety of car models including Honda, Nissan, and Mazda
- Easy to install
- Securely closes the radiator overflow reservoir
Platform Trust & Buyer Confidence
CJ
Chris
Verified buyer
“Promt delivery. Seems like a good product.”
22 July 2026 · via Trustpilot
SM
Scott
Verified buyer
“It was the best service ever received by any company from my online shopping experience in the last 10yrs”
11 July 2026 · via Trustpilot
TD
Terri
Verified buyer
“so easy to order delivery was way earlier than i expected”
3 July 2026 · via Trustpilot
GC
Gavin
Verified buyer
“Very impressed with the speed at which I received my package from the United States to Australia. Highly recommended.”
21-Jul-26 · via Trustpilot
J
Jeannie
Verified buyer
“Very efficient service. Hassle-free. Excellent product. Have ordered several times.”
17-Jul-26 · via Trustpilot
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