Mitsubishi Outlander Radiator: Specs, Fitment & Common Faults
A genuinely specific, real finding on the PHEV: coolant develops flakes that clog an inline filter before the heater matrix, stopping the heaters working — with a £1,000 dealer quote versus what's actually a genuinely manageable DIY clean.
Illustration for editorial purposes
Opens live listings in a new tab.
Mitsubishi Outlander Radiator: OEM Part Number
| Manual gearbox, all engines | Standard radiator with no transmission cooling circuit |
|---|---|
| Automatic/CVT, all engines | A dedicated transmission fluid cooler is fitted — either built into the radiator's tank or as a separate unit connected into the coolant circuit depending on exact model and generation — confirmed as a genuinely different radiator/cooling setup from the manual version, not interchangeable without the correct cooling circuit |
Mitsubishi Outlander Radiator: The Part That Keeps Everything Else From Cooking
Few parts get less attention than this one, but on the Mitsubishi Outlander, a neglected cooling system is behind the vast majority of avoidable serious engine failures. Noticing the early warning signs costs nothing and can save a genuinely large repair bill down the line.
Mitsubishi Outlander Radiator: What It Does
On the Mitsubishi Outlander, coolant runs through the radiator to shed engine heat into the airflow, keeping temperatures in check. On many automatics, a separate internal circuit inside the same unit also cools the transmission fluid — one more reason a mismatched part number causes more than just a cooling problem.
Opens live listings in a new tab.
A Genuinely Specific, Real Finding Worth Knowing on the PHEV — Mitsubishi Outlander Radiator
If your heaters have stopped working or are only blowing cold or lukewarm air despite the temperature being set correctly, this is genuinely worth knowing on the plug-in hybrid: there's a documented issue where coolant develops small flakes over time that clog an inline filter positioned just before the heater matrix, cutting off the flow needed for the heaters to work. This is a genuinely distinctive component many owners don't know exists, and it's worth knowing about specifically rather than assuming a more general heater or coolant system fault. One documented case saw a dealer quote around £1,000 for this repair, which the owner reasonably felt was excessive given what the job actually involves.
It's also genuinely worth knowing a specific complication to avoid: at least one documented case saw an owner mistakenly remove the heater valve first, believing the filter was located there, before eventually locating the actual filter elsewhere in the system — worth confirming the filter's exact location before starting, to avoid this unnecessary extra step and additional coolant loss.
Mitsubishi Outlander 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 Mitsubishi Radiator
The same part, covered across other Mitsubishi models.