Cap Filler.
Fuel Tank Cap.
- 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 INFINITI Fuel Tank Cap is one component that isn't commonly talked about. You take off the Fuel Tank Cap, top off your fuel levels, then secure it in place again each time you fuel up, but you likely don't give this part another thought.
Your Fuel Tank Cap has an important purpose in the performance of your INFINITI as a whole. Obviously, it provides a seal for your fuel tank and keeps outside dirt, water, and other harmful debris from contaminating your fuel. But, it has another purpose, too. The Fuel Tank Cap is also a component of the evaporative emissions system (aka EVAP) in your INFINITI.
When your engine is running, your fuel heats up significantly and emits toxic vapors. However, with the Fuel Tank Cap in place, the EVAP system can catch and recirculate those emissions to stop them from seeping out and contaminating the atmosphere.
If you aren't able to click your Fuel Tank Cap into its opening, or if it frequently loosens after being tightened, you're likely dealing with an old or damaged cap. Since this component is also part of the EVAP system in your INFINITI, your check engine light may come on if your gas cap is loose or broken. Other signs of a damaged or worn Fuel Tank Cap can include strong gasoline odors while you drive and decreased fuel efficiency (with no change in your driving habits).
There are several drawbacks of a Fuel Tank Cap that's no longer functioning correctly. A Fuel Tank Cap that doesn't fully seal may push dangerous fumes into the air around your INFINITI, but it can also create other significant problems within your INFINITI's engine. A failing Fuel Tank Cap can decrease engine performance, lead to poor gas mileage, and cause fuel leakage. Replace your INFINITI Fuel Tank Cap immediately once you notice that it is no longer functioning correctly.
Replacing a damaged 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 INFINITI Genuine Parts to ensure a seamless fit for your vehicle.
The Fuel Tank Cap listed here (part 1725179914) is compatible with INFINITI G20, INFINITI I30, INFINITI Q45, or INFINITI QX4. Click on the What This Fits link for further info.
CAP ASSY-FILLER
Fits G20, QX4