Water Pump to Expansion Tank Hose 11531711381 Compatible With BMW E39

This OEM water pump to expansion tank hose assembly (11531711381) is engineered for BMW E39 5-Series models, delivering reliable coolant circulation between the pump and expansion reservoir. Constructed to original equipment specifications, it ensures proper pressure regulation and thermal management in your cooling system. Direct fit replacement eliminates compatibility concerns and maintains factory performance standards. Essential for preventing overheating and maintaining engine longevity on E39 platforms.

The 11531711381 water pump to expansion tank hose assembly is a precision-engineered OEM component for BMW E39 5-Series vehicles. This critical coolant line maintains optimal flow between the water pump and expansion reservoir, ensuring consistent thermal regulation and system pressure stability. Built to factory specifications, it resists degradation from high-temperature coolant exposure and vibration stress. A direct replacement that restores cooling system integrity without modification, preventing air pockets and overheating issues that compromise engine reliability.