• 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 frequently overlooked. You twist off the Fuel Tank Cap, top of your fuel levels, and then tighten it back into place every time you get fuel, but that's probably the only time you think to acknowledge your fuel cap.

The Fuel Tank Cap serves an important purpose in the performance of your INFINITI as a whole. You already know that it creates a seal for the fuel tank and keeps outside moisture, debris, and dirt from contaminating your gasoline. But here's another thing: the Fuel Tank Cap is also a component of your INFINITI's evaporative emissions system (or EVAP).

When you're driving, your fuel heats up significantly and generates dangerous byproducts. Fortunately, with the Fuel Tank Cap in place, the EVAP system helps capture those fumes to prevent them from being released into the atmosphere.

If you aren't able to click your Fuel Tank Cap into place, or if it becomes loose after being tightened, you probably have a worn out gas tank cap. Since this component is also part of your EVAP system, your dashboard engine light may illuminate if your cap is loose or broken. Additional signals of a worn out Fuel Tank Cap include gasoline odors while the engine is running and decreased fuel efficiency without having changed any of your travel habits.

Consider the drawbacks of a Fuel Tank Cap that's no longer functioning correctly. A Fuel Tank Cap that doesn't fully seal may release damaging byproducts into the air around your INFINITI, but it can also lead to costly wear and tear in your INFINITI. A worn out Fuel Tank Cap can reduce your INFINITI's engine performance tank your gas mileage (no pun intended!), and cause fuel leaks. You should consider replacing the Fuel Tank Cap in your INFINITI immediately once you notice that it is not operating as it should.

Replacing an old Fuel Tank Cap is fast and easy, and you don't need special tools to do it. Just be sure to shop directly with INFINITI Genuine Parts to get a perfect fit for your model and trim.

This Fuel Tank Cap (reference number 172514BA0B) will fit your INFINITI EX35 2010-2017, INFINITI EX37 2013-2017, INFINITI FX35 2010-2012, INFINITI FX37 2013, INFINITI FX50 2010-2013, INFINITI G25 2011-2013, INFINITI G37 2010-2013, INFINITI G37X 2010-2013, INFINITI M37 2011-2019, INFINITI M56 2011-2019, INFINITI Q40 2014-2015, INFINITI Q50 2014-2020, INFINITI Q60 2014-2015, INFINITI Q70 2011-2019, or INFINITI QX70 2014-2017. Check out the What This Fits link for additional information.