Replacement O-Ring for BMW B58 / S58 / S68 Billet Breather Cap

Purpose and benefit

This is a replacement O-ring/gasket for the BMS billet oil-filler breather cap on compatible BMW engines. Replacing a worn or damaged seal helps restore the cap seal.

Selection and package

This listing is for the O-ring/gasket only. The billet cap, hardware, and other parts are sold separately. Match seal profile and cap generation to your B58/S58/S68 assembly before ordering.

Fitment and important notes

For the BMS billet oil-filler breather cap on BMW B58, S58, or S68 when the seal profile matches your cap. Not a fuel-system or turbo-line O-ring.