(17111702800) - Radiator Expansion Tank Vent Hose-750i (88-94) (Genuine BMW) (1 available)

Radiator Expansion Tank Vent Hose-750i (88-94) (Genuine BMW) - This flexible molded hose routes overflow pressure and air bubbles from the thermostat housing assembly directly back to the cooling system expansion tank. (gar2-Y11)

• High Wear Component: Positioned over the central engine corridor, this narrow hose is highly susceptible to heat cycling from the large V12 engine block. Over time, it commonly becomes hard, brittle, and prone to hairline cracks near the barb connections.

• Service Tip: It is highly recommended to perform a comprehensive cooling system flush and update old spring hose clamps whenever replacing this vent line to prevent premature high-pressure leakage.