Buy OEM Engine-crankcase-vent-valve-seal Part # 99970763540 (999-707-635-40). ***NEW NUMBER PAF-008-085***. Engine Oil Filter Adapter - Repair or Replace The oil filter adapter in your Engine-crankcase-vent-valve-seal can

Engine Crankcase Vent Valve Seal. O - Ring.
21 x 4mm. Engine Crankcase Vent Valve Seal.

Fits 911

Engine Oil Filter Adapter - Repair or Replace
The oil filter adapter in your Porsche can exhibit a range of symptoms if it fails including an oil leak, a coolant or antifreeze leak, or an intrusion between the cooling system and the engine's oil, resulting in oil in your coolant or coolant in your oil.