OEM
1 per car.
- CHR0007P
- W01331630121
- 11531436410 is a Rein Automotive coolant hose.
- The expansion tank coolant hose on your BMW E46 3 series with the M52 and M54 engine is the hose used to fill your engine cooling system through the expansion tank. It also feeds the return coolant to the expansion tank as the engine warms and coolant expands.
- Eventually, the rubber of the hose and o-rings that seal it to the expansion tank and coolant pipe degrade leading to leaks that can cause insufficient coolant in the cooling system to keep the engine from overheating.
- Located on the left side of the engine and running past the alternator, this hose is easily visible to check for leaks and can be changed out in under an hour.
- This Rein Automotive expansion tank hose with the BMW quick connect hose connections is the original equipment hose used by BMW at the factory and your local dealer.
- Rein Automotive is the leading manufacturer of cooling system, intake and vacuum hoses for BMW and has been the preferred manufacturer of BMW hoses for over 40 years.
“Left/Right or Front/Rear” notes means the part fits the left or right side of the car. These parts are still sold individually and you’ll
need to select the appropriate quantity if you plan to replace more than one of this item.



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