Buy OEM 2004 Subaru Part # 21204AA780. 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

U5.

HOSE ASSEMBLY-PRE HEATER Engine Coolant Hose

Fits Legacy, Outback

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 2004 Subaru to our Subaru service department for repair.