A few things to note about this cap. The base gasket that comes with it is too thick. So thick that it lifts the base up to a point where the body lines dont line up. After paying around with different thickness gasket materials(cutting my own from sheets of cork gasket) I found that the best solution is to use the gasket that comes with on the OEM gas cap. That creates a tight seal and left the base sit where it should. Looks great. Next issue, the o-ring on the cap itsself I dont believe is ment for gas applications as it has swollen to a point where it no longer can be pushed back into the groove. You basically lay the o-ring on the base and hope it lines up when you set it on top. So far it has. This is quite a hassle especially since this gas cap is intended to make fueling quicker. Having to fuss with the o-ring negates everything(but, to be fair I only got it for the look). I will buy an o-ring that I know is ment for gas applications and try to adhere it to the cap but for a $150ish system I really shouldn't have to go through all this trouble.
