The Fuel Tank Cap on your Nissan isn't commonly talked about. You twist off the Fuel Tank Cap, fill up your tank, and then tighten it back into place every time you get fuel, but you likely don't give this part another thought.
Your Fuel Tank Cap serves a vital role in the performance of your Nissan as a whole. You already know that it seals off your fuel tank and keeps outside debris, moisture, and dirt particles from seeping into your gasoline. But, it has another purpose, too. The Fuel Tank Cap is also part of the evaporative emissions system (aka EVAP) in your Nissan.
When your engine is running, the fuel in your vehicle heats up and generates toxic vapors. However, with the Fuel Tank Cap in place, your EVAP system can catch these exhaust gases to keep them from seeping out and contaminating the air around your vehicle.
If your Fuel Tank Cap doesn't make clicking sounds when it screws into its opening, or if it loosens on its own after being tightened, you likely have a worn out gas tank cap. Since this component is also part of your EVAP system, your engine indicator light may turn on if your gas cap is loose or broken. Other signs of a damaged or worn Fuel Tank Cap include strong gasoline odors while you drive and diminished fuel mileage with no significant change in your travel behaviors.
There are several downsides to a Fuel Tank Cap that's not working as it should. A Fuel Tank Cap that doesn't fully seal may push harmful emissions into the air around your Nissan, but it may also lead to costly wear and tear in your Nissan. A broken Fuel Tank Cap can reduce your Nissan's engine performance tank your gas mileage (no pun intended!), and cause fuel leaks. Replace your Nissan Fuel Tank Cap as soon as you realize that it is not operating as it should.
Replacing your Fuel Tank Cap is fast and easy, and you can do it yourself. All you need to do is shop directly with Nissan Genuine Parts to get the best possible fit.
This Fuel Tank Cap (reference number 172519EG1C) will fit the following: Nissan Altima 2007-2013, Nissan Sentra 2013-2018, or Nissan Versa 2007-2019. Check out the What This Fits tab for more details.
CAP ASSY-FILLER
Fits Sentra