Buy OEM 2003 Subaru Part # 21204AB40A. Hose Pre Heater. Heater Hose A heater hose transfers heat from your engine’s cooling system to your vehicle’s heater. If the hose is

HOSE ASSEMBLY-PRE HEATER Engine Coolant Hose

Fits Impreza

Heater Hose
A heater hose transfers heat from your engine’s cooling system to your vehicle’s heater. If the hose is leaking, ruptured, or appears to be on the verge of failure, bring your 2003 Subaru to our Subaru service department for repair.