- 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 twist off 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 has a vital role in the overall function of your INFINITI. For starters, it creates a seal for the fuel tank and stops debris, moisture, and dirt particles from getting into your fuel. But did you know? The Fuel Tank Cap is also part of the EVAP, or evaporative emissions system, within your INFINITI.
As your engine runs, your fuel temperature rises, and it generates toxic vapors. Fortunately, with a properly working Fuel Tank Cap, the EVAP system helps capture and recirculate those emissions to keep them from leaking out into the air around your vehicle.
If you aren't able to click your Fuel Tank Cap onto your fuel tank, or if it becomes loose after being tightened, you likely have a damaged or worn out gas cap. Because the cap is part of your engine's overall EVAP system, your engine indicator light may come on if the fuel tank cap is faulty. Other indicators of a worn out Fuel Tank Cap may include smelling gasoline while driving and decreased fuel efficiency with no significant change in your travel behaviors.
There are a couple of consequences of a Fuel Tank Cap that's not working as it should. A Fuel Tank Cap that doesn't fully seal can release harmful emissions into the atmosphere, and it could also cause costly wear and tear within your INFINITI's engine. A failing Fuel Tank Cap can decrease engine performance, lead to poor gas mileage, and create messy fuel leaks. You should consider replacing the Fuel Tank Cap in your INFINITI ASAP once you realize that it is no longer functioning correctly.
Replacing a damaged Fuel Tank Cap is fast and easy, and you can do it yourself. You just need to shop directly with INFINITI Genuine Parts to get a seamless fit for your vehicle.
This Fuel Tank Cap (reference number 172511LA1G) is compatible with INFINITI QX56 2011-2020 or INFINITI QX80 2011-2020. See the What This Fits section for more details.
CAP ASSY-FILLER
Fits QX56, QX80