Oil backflow prevention kit. Porsche 911 / 930

Oil backflow prevention kit. 

Sold as a complete kit. 1 necessary per car.

This oil backflow kit incorporates a check valve between the oil tank and engine which prevents smoking on start up for 911 and 930 models from 1973-89.

The issue is due to the oil tank sitting higher than the engine oil pump. Gravity creates a positive pressure on the pump and slowly fills the engine case with time. Once the car is started, the cars smokes heavily

Our complete kit includes a model specific check valve with upgraded suction hoses and stainless-steel clamps ready for installation.