
The full rundownProduct details
Keep your classic EJ running cool with the genuine upper radiator hose straight from Subaru.
This hose connects the engine to the radiator, moving coolant where it needs to go — simple, reliable, and built to last.
If yours feels soft, cracked, or swollen, it’s time to replace it before it leaves you steaming on the side of the road.
Fits:
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Impreza WRX / STI (1998–2000)
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Liberty (1989–1997)
Compatible with: EJ20, EJ205, EJ207, EJ20D, EJ20E, EJ20G, EJ22, EJ22E, EJ25D engines.
OEM Part Number: 45167AA020
Why Genuine Subaru:
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Factory-spec rubber compound for long life under heat and pressure
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Perfect OEM fit — no trimming or leaks
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Designed for turbo and naturally aspirated EJ engines alike
Roo Racing Tip:
Replace upper and lower hoses together to refresh the cooling system completely. Add a new thermostat and fresh coolant while you’re in there for a clean, sealed system.
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Questions we actually get
Can I return it if I've ordered the wrong thing?
Yes, within 30 days, subject to our returns policy.