Parts for your 1992 Mitsubishi Pajero-Radiator

1992 Mitsubishi Pajero Radiator

Yes, a radiator is absolutely relevant and fitted to the 1992 Mitsubishi Pajero (NH series). This is confirmed by factory and aftermarket technical references, including the Mitsubishi Pajero NH/NJ Workshop/Service Manual (Cooling System – Group 14), the Mitsubishi ASA (CAPS) electronic parts catalogue listings for the 4D56T diesel and 6G72 V6 models (with variants including integrated automatic transmission oil coolers), and general repair guides such as the Haynes and Gregory’s manuals covering Pajero/Montero/Shogun through the early 1990s.

The radiator on a 1992 Pajero is there to keep engine temperatures in the sweet spot, whether it’s a 3.0L V6 petrol or a 2.5L turbo-diesel. Coolant absorbs heat from the block and heads, then dumps it through the radiator core as airflow (and the viscous fan or electric fan assist) passes over the fins. For autos, many units include an in-tank trans cooler to stabilise ATF temps. On- and off-road, towing, or crawling in low-range, this cooling system is doing the heavy lifting to protect the head gasket, turbo (diesel), and overall engine longevity.

As part of regular servicing, it’s smart to flush and replace coolant roughly every 2 years or 40,000 km. Use a quality ethylene-glycol coolant mixed with demineralised water (often 50/50 unless the product says otherwise). Check the radiator cap (typically around 0.9 bar), upper and lower hoses for softness, cracking, or swelling, and keep an eye on the thermostat and water pump condition while you’re there. If the Pajero’s seen dust, mud, or beach work, gently wash the radiator and A/C condenser fins with low-pressure water from the engine bay side out—don’t bend the fins.

Replacement time? Consider an OE-style copper/brass or a quality aluminium core with plastic tanks from a reputable brand. For autos, make sure the integrated trans cooler is correct and flush the ATF circuit if the old radiator failed. Always refit the shroud and confirm the viscous fan is engaging when hot. After refilling, run the engine with the heater on hot to bleed air pockets, top up the overflow bottle to the correct mark. Watch for tell-tales like overheating on hills, a sweet coolant smell, low coolant with no obvious leaks, or milky ATF if a trans cooler fails—any of these call for prompt inspection.

• Great for touring and towing: a healthy radiator means stable temps and less stress on the driveline.
• Budget for new clamps and fresh hoses during a radiator swap—it’s cheap insurance.
• Keep spare coolant on board if heading remote, these rigs carry roughly 8–10 litres in the system depending on engine.

Popular questions

How often should the coolant be changed on a 1992 Mitsubishi Pajero?
Most workshops recommend every 2 years or around 40,000 km. Older systems benefit from regular refreshes to maintain corrosion inhibitors and protect the radiator, water pump, and alloy components. If the vehicle tows, does beach runs, or sees heavy off-road work, stick to the shorter end of the interval and inspect more frequently.

What are the signs the radiator needs replacing?
Common flags include persistent overheating, visible green crust or staining around the tanks, wet spots on the core, swollen or oil-soaked hoses, and repeated coolant loss. For autos, milky or discoloured ATF can indicate a failed in-tank cooler—stop driving and inspect immediately. A blocked core can also show up as temp creep on long climbs or hot days.

Can an aluminium replacement radiator be used?
Yes. Many owners fit a quality aluminium core unit. They’re light and cool well when properly built. Just choose a reputable brand, confirm the trans cooler spec for auto models, and ensure the fan shroud, mounts, and hose sizes match the NH Pajero. Good coolant and clean fins matter more than the material alone.