Porsche Willhoit Anti Drain Back Valve - 911 65-89 SMC-005-020 Option:911 (1972-1989) with chrome-plated and stamped back

with chrome-plated and stamped back plates

Porsche Right side taillight gasket for 911 and 912 (1965-1968) models

Porsche Blue "Carrera" decal for 911 (1970-1973) models

Porsche Windshield washer hose T-piece with check valve

1995-1998 rear right)

Porsche Willhoit Anti Drain Back Valve - 911 65-89 SMC-005-020 Option:911 (1972-1989) with chrome-plated and stamped backPorsche Willhoit anti drain back valve for 911 (1965 1989) models. Four cam cars, and all 911's up to 1989, have a dry sump oiling system. The oil for the engine is stored in a tank in the fender well and not in the crankcase as in a wet sump engine (like the 356). A dry sump system has several advantages: Since no oil is stored in the crankcase, the engine case can be made smaller and the engine can be mounted lower in the car, lowering the center of