Replacement Numbers:11151705258, 11157556838.

Description:Autostar Germany (AST-549138) Oil Separator Vent Hose For BMW E53 11157556838 is a premium aftermarket replacement designed to maintain optimal crankcase ventilation and prevent oil leakage in your BMW E53 engine. Engineered with high-quality, heat- and oil-resistant materials, this vent hose ensures durability under extreme temperatures and engine pressure. It effectively channels blow-by gases from the oil separator, reducing engine contamination and maintaining efficient performance. Perfectly compatible with BMW E53 models, it restores factory-level reliability and helps protect critical engine components. Replacing a worn or cracked vent hose with this Autostar Germany part ensures smoother engine operation, reduced emissions, and long-term durability.