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's Fuel Tank Cap is a car part that isn't commonly talked about. You take off the Fuel Tank Cap, fill your vehicle's fuel tank, then secure it in place again with every trip to the pump, but you likely don't give this part another thought.

Your Fuel Tank Cap has an important purpose in the efficiency of your INFINITI's fuel system. Obviously, it creates a seal for the fuel tank and keeps outside debris, moisture, and dirt particles from contaminating your fuel. But did you know? 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 generates toxic vapors. But, with a properly working Fuel Tank Cap, the EVAP system helps capture and recirculate those emissions to prevent them from being released into the air around your vehicle.

If your Fuel Tank Cap doesn't make clicking sounds when it screws into its opening, or if it frequently loosens even after you've tightened it completely, you probably have a worn out gas tank cap. Because the cap is part of your EVAP system, your check engine light may illuminate if the fuel tank cap is malfunctioning. Other indicators of an old Fuel Tank Cap may include smelling gasoline while driving and diminished fuel mileage without having changed any of your travel habits.

There are a couple of downsides to a Fuel Tank Cap that's not working as it should. A Fuel Tank Cap that doesn't seal properly may release harmful emissions into the air around your INFINITI, but it can also create a domino effect of other issues inside your INFINITI and its engine. A broken Fuel Tank Cap can reduce your INFINITI's engine performance, tank your gas mileage (no pun intended!), and cause fuel leaks. Replace your INFINITI Fuel Tank Cap ASAP once you realize that it is not operating as it should.

Replacing your Fuel Tank Cap is simple, and you can do it yourself. All you need to do is shop directly with INFINITI Genuine Parts to ensure the best possible fit.

This Fuel Tank Cap (reference number 172513GM0B) will fit the following: INFINITI G37. See the What This Fits tab for further info.

Fits G37, Q60