• 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 isn't commonly talked about. You twist off the Fuel Tank Cap, fill up your tank, then secure it in place again each time you fuel up, but somehow this essential component remains an afterthought.

The Fuel Tank Cap serves a big part in the performance of your INFINITI as a whole. For starters, it seals off your fuel tank and prevents dirt, water, and other harmful debris from getting into your gas supply. But did you know? The Fuel Tank Cap is also part of the evaporative emissions system (aka EVAP) in your INFINITI.

When your engine is running, your fuel heats up significantly and releases harmful fumes. But, with the Fuel Tank Cap in place, your INFINITI's EVAP system helps capture these exhaust gases to prevent them from leaking out into the atmosphere.

If your Fuel Tank Cap doesn't make clicking sounds when it screws onto your fuel tank, or if it loosens on its own after you've already tightened it, you're likely dealing with an old or damaged cap. Since this component is also part of the EVAP system in your INFINITI, your dashboard engine light may illuminate if the fuel tank cap is loose or broken. Other indicators of a damaged or worn Fuel Tank Cap may include gasoline odors while the engine is running and diminished fuel mileage with no significant change in your travel behaviors.

There are several consequences of a Fuel Tank Cap that's not working as it should. A Fuel Tank Cap with a busted seal can release harmful emissions into the atmosphere, but it may 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 lead to poor gas mileage, and create messy fuel leaks. You should consider replacing the Fuel Tank Cap in your INFINITI immediately once you notice that it isn't sealing or tightening properly.

Replacing a damaged Fuel Tank Cap is fast and easy, and you can do it at home. You just need to shop directly with INFINITI Genuine Parts to enjoy a perfect fit for your model and trim.

This Fuel Tank Cap (reference number 17251ZV30A) will fit your INFINITI G25 2011-2013, INFINITI G35 2003-2008, INFINITI G37 2009-2013, INFINITI G37X 2009-2013, INFINITI M35 2006-2007, INFINITI M45 2006-2007, INFINITI Q40 2014-2015, INFINITI Q45 2002-2006, or INFINITI QX56 2004-2010. Click on the What This Fits link for further info.