Mitsubishi L200 Radiator: Specs, Fitment & Common Faults

A genuinely useful, specific diagnostic clue: solid radiator hoses, boiling in the header tank, and temperature dropping with the heater on full together point toward a stuck thermostat rather than a leak.

Illustration for editorial purposes

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OEM Part Number: 1350A809 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 606548 / NRF 560009

Accuracy note: Covers the Mitsubishi L200 (2015-) as listed in the UK aftermarket catalogues. Radiators are sold by engine, gearbox and air-conditioning fitment, and one model usually has two or three different cores — a thicker core for diesels and automatics, a thinner one for small petrols — with different hose positions, so a radiator for the wrong engine will not connect up. The references below are UK aftermarket listings whose fitment lists name this generation, labelled by brand with the core size in mm; genuine numbers are those quoted against the listing. Check your engine code and whether the car has air conditioning against your VIN, and replace the coolant and bleed the system after fitting.

Radiators (aftermarket)	Nissens 606548 (525 x 638 x 16 mm, brazed aluminium with plastic tanks and built-in oil cooler, 2.2 DI-D 4N14 and 2.4 DI-D 154/181 hp 4N15, 2WD and 4WD); Ava MT2280; NRF 560009; Van Wezel 32012706; Prasco FT824R002; Kale 355065; Diederichs DCM3885
Core sizes & variants	This 525 x 638 mm core carries a transmission oil cooler in the side tank, so it suits the automatic. Manual trucks may be fitted with a radiator without the cooler; check the old unit before ordering.
Genuine (OE) numbers quoted	1350A809; 6000605264
Fitment notes	35 mm inlet and outlet; supplied with the sealing cap, oil cooler, gaskets and seals.

Accuracy note: genuinely worth knowing: radiator core size and construction can differ between petrol and diesel L200 engines, and again between manual and automatic gearboxes where the automatic needs an integrated oil cooler circuit — confirm your exact engine code and transmission before ordering.

Mitsubishi L200 Radiator: The Part That Keeps Everything Else From Cooking

This isn't a part anyone gets excited about, but on the Mitsubishi L200, 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.

Before you buy: radiator size and design vary significantly by engine size, transmission type, and whether your car has air conditioning. Always confirm against your VIN before ordering.

Mitsubishi L200 Radiator: What It Does

Keeping the Mitsubishi L200'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.

Mitsubishi L200 Radiator: Watch: Replacing It

🎬 Watch: Installing New Radiator and Thermostat in Mitsubishi Triton / L200 (older gen)

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Generation not stated, probably Series 4. Spanish alt 3RLeXul0gQ8.

Mitsubishi L200 Radiator reference plate

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A Genuinely Useful, Specific Diagnostic Clue Worth Knowing — Mitsubishi L200 Radiator

If you're facing overheating, this specific combination of symptoms is genuinely worth knowing about: both radiator hoses feeling solid to the touch rather than squishy, combined with visible boiling in the header tank, and the temperature temporarily dropping when the heater is switched on full, strongly points toward a stuck thermostat restricting coolant flow, rather than a leak or a more serious fault. It's worth checking the thermostat specifically if you're seeing this exact pattern, since it's a comparatively inexpensive part to replace compared with some of the more serious causes of overheating.

A genuinely important warning worth knowing if you're tempted to simply remove a faulty thermostat rather than replace it: while the engine will technically still run without one, it will experience increased wear from not reaching correct operating temperature quickly enough, and coolant can actually flow through the radiator too fast without a thermostat to regulate it, meaning it doesn't have enough time to cool properly in the radiator core — genuinely worth replacing a faulty thermostat properly rather than leaving it out as a supposed quick fix.

It's also genuinely worth knowing that if a cooling system has recently had a new radiator or other major component fitted, a proper flush and bleed of the system is worth confirming was actually carried out, since air trapped in the system or debris not fully flushed out can cause overheating that has nothing to do with the new part itself.

Mitsubishi L200 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.