18 x 3mm. Engine Coolant Bypass Pipe O-Ring. O-Ring.
Fits M3, Z3, Z43.2 LITER. Cooling System Bypass Line - Repair or ReplaceIf your has been either leaking coolant or overheating, you could have a faulty cooling system bypass line. Let our technicians help trace the problem and replace the faulty coolant hose with a genuine part.
Call our service department to schedule installation:
Installed price includes part and dealer installation cost, local taxes not included.