RKX Gas cap replacement seal Compatible with GM, Chevy, GMC, Cadillac 20915842 / GT330
Made from high quality nitrile rubber This is a common failure point that can cause check engine lights for evap leaks and other faults.
Don't settle for aftermarket caps that cause more problems than they solve! Reseal your factory cap!
Advantages of replacing just the gas cap seal: - More affordable - Retain high quality OE cap with theater - Avoid gas cap warning lights from using aftermarket caps