Subaru Impreza Radiator: Specs, Fitment & Common Faults
Confirmed on the EJ25-engined Impreza: Subaru has extended the warranty for a known head gasket issue on certain production dates — worth checking your manufacture date plate and a specific, characteristic leak location.
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Subaru Impreza Radiator: OEM Part Number
| Manual gearbox, all engines | Standard radiator with no transmission cooling circuit |
|---|---|
| Lineartronic CVT, standard engines | A genuine factory oil-to-water CVT fluid cooler is fitted as standard, using the same coolant that runs through the engine — confirmed by Subaru as functionally adequate for normal use, though the CVT's known heat-related reliability issues (which led Subaru to extend the powertrain warranty to 10 years/100,000 miles on many 2010-2018 vehicles) mean this cooler's condition and cleanliness genuinely matters |
| Turbo engines (XT/WRX and similar) | An additional auxiliary transmission cooler is fitted alongside the standard oil-to-water unit specifically because of the extra heat generated by the higher-output engine — not fitted on naturally aspirated variants |
Subaru Impreza Radiator: The Part That Keeps Everything Else From Cooking
This isn't a part anyone gets excited about, but on the Subaru Impreza, overlooked cooling problems are responsible for most serious engine failures that aren't simple wear-and-tear. Catching the early symptoms is about the cheapest insurance available against a major bill later.
Subaru Impreza Radiator: What It Does
Keeping the Subaru Impreza's engine temperature within safe limits comes down to the radiator's job of transferring heat from the coolant into the surrounding air. Automatic-gearbox versions often build in a second circuit for transmission fluid cooling too, which is exactly why fitting the wrong part number can cause two problems, not one.
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Confirmed: A Genuine Extended Warranty Worth Checking Your Car Against — Subaru Impreza Radiator
This is genuinely worth checking directly if you're finding unexplained coolant drips on an older, EJ25-engined Impreza: head gasket seepage on this engine has a characteristic location worth checking first — drips appearing on the crossmember that the engine mounts attach to, with the bottom of the head itself feeling damp. Genuinely important to know: Subaru has extended the warranty specifically covering this known head gasket issue on certain production dates across this engine family, with documented cases seeing the gasket replaced completely free of charge under this extension. It's worth checking the manufacture date plate inside the driver's door frame and asking a dealer directly whether your specific car falls within the extended coverage window.
It's also genuinely worth knowing that a Subaru-recommended coolant conditioner additive can delay head gasket seepage temporarily, but this is a delaying measure rather than a genuine fix. Real repair costs for this job have been documented in the region of £1,950 to £2,750 or more.
Subaru Impreza Radiator: Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Radiator Guide for the three common failure modes, confirming fitment against your VIN, and OEM vs aftermarket guidance.
More Subaru Radiator
The same part, covered across other Subaru models.