Oil filler neck suitable for Citroën 2CV6 Dyane 6 Mehari includes crankcase ventilation). Made by

Franzose/CiPeRe' in Europe. Good quality. The oil filler neck is a very important component. It regulates the pressure in the engine housing. Correct pressure in the engine housing prevents oil leakage from the engine and ensures reliable lubrication. Unfortunately, the rubber flaps (which regulate the internal pressure) inside the oil filler neck harden over the years (or due to synthetic oils). The only solution is to replace the oil filler neck.