Buy OEM 2004 Subaru Part # 45150AE01A. Engine Coolant Reservoir. Reserve Tank Radiator. Engine Coolant Expansion Tank A failed expansion tank can cause the cooling system in

A Container that holds Engine Coolant.

RESERVE TANK ASSEMBLY-RADIATOR Engine Coolant Reservoir

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Engine Coolant Expansion Tank
A failed expansion tank can cause the cooling system in your Subaru to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.