11 15 7 522 931 : Crankcase ventilation hose for BMW Series 3 E90/E91/E92/E93

This crankcase ventilation hose ensures the connection between the cylinder head cover and the oil separator on BMW Series 3 bodywork E90, E91, E92 and E93 equipped with the N52 engine, in the 323i, 325i, 325xi, 330i and 330xi versions. Its role is to conduct oil vapours towards the crankcase ventilation circuit, thereby ensuring correct operation of the crankcase ventilation system. As part of the restoration or maintenance of a classic BMW Series 3, replacement of this hose is an essential step to prevent oil leaks and maintain engine integrity. Offered as a new part, it provides a reliable solution to restore your vehicle to its original performance.