Oil pressure valve and spring booster kit for Volkswagen Beetle& Combi ->07/71

Oil pressure valve and spring booster kit. Enables the oil pressure to be increased in an old engine.

For Type 1 engines up to ->07/1971
with a single oil circuit.
(1 cap only on the block). Assembly advice: the piston should move smoothly, there should be no resistance during fitting, polish the piston a little with glass paper if required. After fitting, check the engine oil pressure with a pressure gauge.