• Seals off your fuel tank and prevents contaminants in your gas supply
• Plays an important role in the EVAP system
• Easy to replace on your own

Your Nissan's Fuel Tank Cap is a car part that is frequently overlooked. You remove the Fuel Tank Cap, fill your vehicle's fuel tank, and then secure it back on each time you fuel up, but that's probably the only time you think to acknowledge your fuel cap.

Your Fuel Tank Cap serves a vital role in the overall function of your Nissan. For starters, it provides a seal for your fuel tank and stops moisture, debris, and dirt from getting into your fuel. But did you know? The Fuel Tank Cap is an integral part of your Nissan's evaporative emissions system (or EVAP).

As your engine runs, the fuel in your vehicle heats up and emits toxic vapors. However, with the Fuel Tank Cap in place, your EVAP system helps capture these exhaust gases to prevent them from leaking out into the surrounding atmosphere.

If your Nissan Fuel Tank Cap no longer clicks into its opening, or if it frequently loosens after being tightened, you probably have an old or damaged cap. Since this part is a component in the EVAP system in your Nissan, your engine indicator light may turn on if your gas cap is faulty. Other signs of an old Fuel Tank Cap may include strong gasoline odors while you drive and diminished fuel mileage without having changed any of your travel habits.

Consider the drawbacks of a Fuel Tank Cap that's not working as it should. A Fuel Tank Cap that doesn't fully seal can release damaging byproducts into the environment, and it could also cause costly wear and tear inside your Nissan and its engine. A worn out Fuel Tank Cap can reduce your Nissan's engine performance, lead to poor gas mileage, and cause fuel leakage. You should consider replacing the Fuel Tank Cap in your Nissan immediately once you notice that it is not operating as it should.

Replacing your Fuel Tank Cap is fast and easy, and you don't need special tools to do it. All you need to do is shop directly with Nissan Genuine Parts to ensure a seamless fit for your vehicle.

The Fuel Tank Cap listed here (part 17251ZY90A) will fit the following: Nissan Maxima. Click on the What This Fits section for additional information.