Seller notes

RKX Gas cap seal for GM 20915842 / GT330 / GT261 OEM Gas CapMade from high quality nitrile rubberThis is a common failure point that can cause check engine lights for evap leaks and other faults.Common fault codes are P0440 / 16824, P0456 / 16840, P0442 / 16826, P0455 / 16839.Don't settle for aftermarket caps that cause more problems than they solve!Reseal your factory cap! Please study pictures carefully! Advantages of replacing just the gas cap seal:- More affordable- Retain high quality OE ca...

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