Oil filter white silicon "O" ring for BMW R series Airheads 1969 -1995. White silicone O-ring for ALL BMW R Airhead Oil Filters with or without Oil Cooler. Often referred to as the $2,000 O-ring. Replacement of this O-ring is crucial; if there is not sufficient compression from the cover upon the O-ring, canister lip oil pressure is lost and catastrophic engine failure can occur due to oil pressure loss. Original part number: 11 42 1 337 6098; 11421337098 - oil filter gasket
