Subaru Radiator Replacement Cost
Replacement of the engine radiator assembly due to fatigue of the plastic end tanks or external impact damage.
Why this fails
Subaru radiators utilize plastic end tanks crimped to an aluminum core; over time, heat cycles lead to the plastic becoming brittle and cracking, particularly on EJ25 and FB25 series engines. External rock debris can also puncture the thin aluminum cooling fins.
What the job involves
- Drain engine coolant and disconnect upper/lower radiator hoses and transmission cooler lines (where applicable).
- Remove radiator fans/shroud assembly and upper brackets.
- Lift out the old radiator and transfer the electric fans to the new unit.
- Install the new radiator, reconnect all lines, and refill with Subaru Super Blue Long Life Coolant.
- Perform a cooling system 'burp' using a spill-free funnel to ensure no air pockets remain in the heater core or block.
If you delay this repair
Severe engine overheating leading to warped cylinder heads and blown head gaskets (especially on EJ25 engines). Coolant loss can lead to sudden engine seizure.
Save money
- • Purchase an aftermarket premium unit like Denso (the OEM supplier) to save $150+ off Subaru box pricing.
- • Always replace the upper and lower radiator hoses and the radiator cap (108kPa/1.1 bar) at the same time to prevent secondary leaks.
- • Perform the job alongside a coolant flush for zero extra labor cost.
OEM part numbers
FAQ
How much does subaru radiator replacement cost cost in 2026?
Expect $650–$1,150 at most US shops, parts plus labor.
How long does the job take?
1.5–3 labor hours typically.
Can I do this myself?
Yes — DIY difficulty 3/5.
What happens if I delay?
Severe engine overheating leading to warped cylinder heads and blown head gaskets (especially on EJ25 engines). Coolant loss can lead to sudden engine seizure.