- 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 Nissan isn't commonly talked about. You take off the Fuel Tank Cap, top off your fuel levels, and then tighten it back into place with every trip to the pump, but somehow this essential component remains an afterthought.
The Fuel Tank Cap serves a big part in the efficiency of your Nissan's fuel system. You already know that it seals off your fuel tank and keeps outside dirt, water, and other harmful debris from getting into your gasoline. But here's another thing: the Fuel Tank Cap is also a component of the EVAP, or evaporative emissions system, within your Nissan.
When you're driving, the fuel in your vehicle heats up and emits toxic vapors. However, with the Fuel Tank Cap in place, your EVAP system can catch those fumes 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 place, or if it loosens on its own even after you've tightened it completely, you're likely dealing with an old or damaged cap. Since this part is a component in your EVAP system, your dashboard engine light may come on if the fuel tank cap is loose or broken. Additional signals of a damaged or worn Fuel Tank Cap can include gasoline odors while the engine is running and decreased fuel efficiency with no significant change in your travel behaviors.
There are a couple of consequences 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 atmosphere, and it could also create a domino effect of other issues inside your Nissan and its engine. A worn out Fuel Tank Cap can reduce your Nissan's engine performance, lead to poor gas mileage, and cause fuel leaks. Replace your Nissan Fuel Tank Cap as soon as you realize that it is not operating as it should.
Replacing an old Fuel Tank Cap is fast and easy, and you can do it at home. You just need to shop with Nissan directly to enjoy the best possible fit.
The Fuel Tank Cap listed here (part 17251EM31A) will fit your Nissan Cube or Nissan Versa. See the What This Fits link for more details.
CAP ASSY-FILLER
Fits Versa