Parts for your 2002 Mitsubishi Pajero-Water pump

2002 Mitsubishi Pajero Water Pump — What it does and when to replace it

Technical sources including the Mitsubishi Pajero NM/NP Workshop Manual (Cooling System), Mitsubishi ASA electronic parts catalogue, and major component catalogues from Gates and Aisin confirm that every 2002 Mitsubishi Pajero (3.5L 6G74 V6 and 3.2L 4M41 Di‑D) is liquid‑cooled and uses a mechanical water pump. On the 6G74 V6 the pump is driven by the timing belt, while on the 4M41 diesel it’s driven by the accessory (fan/serpentine) belt. So yes — a water pump is absolutely fitted and relevant on this model.

In day‑to‑day terms, the water pump keeps coolant circulating through the block, heads, heater core and radiator, holding engine temperatures steady whether it’s slogging up a beach track or towing the boat. Proper flow prevents hot spots, protects gaskets and alloy components, and helps the Pajero deliver reliable performance in Aussie and Kiwi conditions.

For the 6G74 V6, best practice is to replace the water pump whenever the timing belt is done — typically around 100,000 km or 5 years (check the service schedule for the exact interval). Labour overlaps heavily, so a fresh pump, thermostat, belt, idlers and seals done together saves coin and reduces the risk of coming back for the same tear‑down.

The 4M41 diesel doesn’t have a timing belt, so the pump is usually replaced on condition. If there’s coolant weeping from the pump’s weep hole, bearing noise, or pulley play, it’s time. Many owners opt for preventative replacement around 200,000–250,000 km, especially if the vehicle works hard off‑road or tows often.

Good maintenance helps the pump last:

• Use Mitsubishi‑approved long‑life coolant at the correct mix (often 50/50) and change it about every 5 years or 100,000 km.
• Bleed air properly after any cooling system work to avoid cavitation.
• Inspect the drive belt (diesel) or timing belt area (V6) for leaks, stains, or noise.
• After any pump swap, recheck coolant level and hose clamps after a few heat cycles.

Watch for these signs of trouble:

• Sweet coolant smell, pink/green/blue residue around the timing cover or pump area
• Overheating at idle or when towing
• Grinding/whirring from the front of the engine, or wobble at the pump pulley

Quality parts matter here — an OE or reputable-brand pump, fresh gasket/sealant as specified in the manual, and clean mating surfaces will keep the Pajero’s temps rock solid for the long haul.

Does the 2002 Mitsubishi Pajero have a water pump?
Yes. Workshop and parts catalogues for the NM/NP series show a mechanical water pump on both the 3.5L 6G74 V6 (timing‑belt driven) and the 3.2L 4M41 Di‑D (accessory‑belt driven). It’s essential for circulating coolant and managing engine temperature.

When should the water pump be replaced?
On the 6G74 V6, replace the pump whenever the timing belt is serviced — commonly every 100,000 km or 5 years. On the 4M41 diesel, replace on condition (leaks, noise, bearing play), with many owners choosing a preventative change around 200,000–250,000 km if the vehicle works hard.

What are the signs of a failing water pump?
Coolant drips or crusty residue near the pump or timing cover, overheating at low speed or under load, bearing noise or pulley wobble, and unexplained coolant loss are all classic symptoms that it’s ready for attention.