Cap Filler. Pin Fuel Cap. Retainer Fuel Cap, Mounting.
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

The Fuel Tank Cap on your INFINITI is often neglected. You twist off the Fuel Tank Cap, fill up your tank, then secure it in place again every time you get fuel, but that's probably the only time you think to acknowledge your fuel cap.

The Fuel Tank Cap serves a vital role in the performance of your INFINITI as a whole. Obviously, it seals off your fuel tank and keeps outside moisture, debris, and dirt from getting into your gasoline. But, it has another purpose, too. The Fuel Tank Cap is also part of your INFINITI's evaporative emissions system (or EVAP).

When your engine is running, your fuel temperature rises, and it emits harmful fumes. But, with a properly working Fuel Tank Cap, your INFINITI's EVAP system can safely contain these exhaust gases to stop them from leaking out into the surrounding atmosphere.

If your INFINITI Fuel Tank Cap no longer clicks into place, or if it frequently loosens after you've already tightened it, you probably have a worn out gas tank cap. Since this part is a component in the EVAP system in your INFINITI, your check engine light may come on if your cap is faulty. Other signs of a damaged or worn Fuel Tank Cap include smelling gasoline while driving 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 with a busted seal may release dangerous fumes into the atmosphere, but it can also create a domino effect of other issues inside your INFINITI and its engine. A failing Fuel Tank Cap can diminish engine performance, lessen your fuel efficiency, and cause fuel leakage. Replace your INFINITI Fuel Tank Cap ASAP once you realize that it is no longer functioning correctly.

Replacing an old Fuel Tank Cap is simple, and you can do it at home. You just need to shop with INFINITI directly to enjoy a seamless fit for your vehicle.

This Fuel Tank Cap (reference number 172511NC0B) is compatible with INFINITI EX35, INFINITI FX35, INFINITI FX50, INFINITI G25, INFINITI G35, INFINITI G37, INFINITI G37X, INFINITI M35, INFINITI M37, INFINITI M45, INFINITI M56, or INFINITI Q70. See the What This Fits tab for further info.