A Comprehensive Guide to the 2008-2012 INFINITI EX35 Radiator
Everything an owner needs to know about addressing leaks and preventing overheating in their INFINITI EX35.
- The most common failure is a crack where the plastic end tanks meet the aluminum core, causing leaks.
- When replacing the radiator, it is strongly advised to also replace the thermostat, hoses, and cap to prevent future issues.
- High-quality aftermarket brands like Denso and CSF offer OEM-level performance for a fraction of the dealer price.
- DIY replacement is possible and can save money, but be prepared to work around the A/C condenser carefully.
Is Your INFINITI EX35 Radiator Failing?
A failing radiator is a common issue for the 2008-2012 INFINITI EX35, often leading to coolant leaks and engine overheating. The most frequent point of failure is where the plastic end tanks are crimped to the aluminum core. Over time, the plastic can become brittle from heat cycles, causing cracks and leaks. If you notice any of the following symptoms, it's time to inspect your cooling system.
Key Symptoms of a Bad Radiator:
- Engine Overheating: The temperature gauge climbing into the red is a serious warning sign that the radiator is not cooling the engine effectively.
- Visible Coolant Leaks: You may find puddles of pink or green fluid under the front of your vehicle. Often, you can see green or white crusty residue on the radiator itself, especially at the seams where the plastic tanks meet the aluminum core. 🎬 Watch: See what a typical EX35 radiator leak looks like.
- Low Coolant Light: A frequent need to top off your coolant reservoir indicates a leak somewhere in the system.
- Sweet Smell: The smell of hot coolant is a distinct, sweet aroma that often signals a leak.
Known Issues: Plastic End Tank Failure
The original radiators on these vehicles are known for developing cracks along the upper plastic tank. A stuck thermostat can sometimes increase pressure in the system, accelerating this failure. When replacing the radiator, it is highly recommended to also replace the thermostat and radiator hoses as a preventative measure.
Choosing the Right Aftermarket Radiator
When your EX35's radiator fails, you have a choice between an original equipment manufacturer (OEM) part from an Infiniti dealer and a new aftermarket part. While an OEM part guarantees a perfect fit, it can be very expensive. Aftermarket radiators offer a significant cost saving and many are designed to meet or exceed OEM specifications.
Aftermarket Brand Tiers
- Tier 1 - OEM Quality (Denso, CSF): Denso is a well-respected original equipment supplier for many automakers, and their radiators are known for quality and reliability. CSF is another top-tier brand, offering both standard and high-performance cooling solutions with robust construction.
- Tier 2 - Standard Aftermarket (Spectra): Brands like Spectra Premium provide reliable, OE-compliant radiators that are a popular choice for daily drivers. They offer a good balance of quality and price.
- Tier 3 - Budget Options (APDI, Global Parts, Onix): These brands provide a cost-effective solution to get your vehicle back on the road. While they meet fitment requirements, they may not offer the same long-term durability as higher-tiered brands.
Pro Tip: The A/C Condenser
The radiator replacement procedure for the EX35 is complicated by the A/C condenser, which is attached to the front of the radiator. Many official guides and videos state that the A/C system must be professionally evacuated before the radiator can be removed. However, some experienced DIYers have found it possible to carefully separate the condenser and move it aside without disconnecting the A/C lines, saving significant time and the cost of an A/C service.
🎬 See this replacement walkthrough for a step-by-step DIY guide.Cost to Replace an INFINITI EX35 Radiator
The cost can vary significantly based on the parts you choose and whether you perform the labor yourself.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Radiator | $142 - $221 |
| New OEM Radiator | $375 - $700+ |
| Shop Labor | $250 - $360 |
| Total Professional Replacement (Aftermarket Part) | $392 - $581 |
| Total Professional Replacement (OEM Part) | $625 - $1,060+ |
Frequently Asked Questions
Can I replace the EX35 radiator myself?
Yes, this is a feasible DIY project for someone with moderate mechanical experience. The job takes approximately 2-3 hours. You will need a good set of tools, including a 10mm socket, extensions, and hose clamp pliers. The main challenge is dealing with the attached A/C condenser.
What kind of coolant should I use in my EX35?
It is critical to use the correct coolant to protect your engine. For the 2008-2012 INFINITI EX35, you should use Nissan Blue Long Life Antifreeze/Coolant. Using the wrong type of coolant can lead to corrosion and premature failure of cooling system components.
🎬 Learn how to properly bleed the air from your coolant system.Should I replace other parts with the radiator?
Yes. It is highly recommended to replace the thermostat, radiator cap, and both upper and lower radiator hoses when you replace the radiator. A failing thermostat can cause overheating that damages the new radiator, and old hoses can become brittle and fail unexpectedly.
Are there any recalls for the INFINITI EX35 radiator?
No, there are no specific recalls for the radiator on the 2008-2012 INFINITI EX35. While some owners report cracks as a common problem, it has not resulted in a safety recall from the NHTSA.
Helpful Videos
Technical Specifications
OEM Part Numbers: 21460-1UR0A 21460-1CB0A 21460-1BA0A 21460-1BB0A
The radiator for the 2008-2012 INFINITI EX35 is a crossflow design, typically with a single row, featuring plastic tanks and an aluminum core. It includes an integrated automatic transmission fluid cooler.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- INFINITI EX35:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your INFINITI EX35 Radiator Failing?
- Key Symptoms of a Bad Radiator:
- Known Issues: Plastic End Tank Failure
- Choosing the Right Aftermarket Radiator
- Aftermarket Brand Tiers
- Pro Tip: The A/C Condenser
- Cost to Replace an INFINITI EX35 Radiator
- Frequently Asked Questions
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