Parts for your 2001 Mitsubishi Pajero-Oil pump

2001 Mitsubishi Pajero oil pump — what it is and how to look after it

Is an oil pump relevant for a 2001 Mitsubishi Pajero? Yes. Technical sources confirm that both main engines fitted to the 2001 Pajero— the 3.5‑litre 6G74 V6 petrol and the 3.2‑litre 4M41 DI‑D diesel — use a crankshaft‑driven, internal oil pump integrated into the front timing case. This is outlined in the Mitsubishi Motors NM/NP Pajero workshop manual (Engine—Lubrication section) and the Mitsubishi ASA parts catalogue listings for the oil pump assemblies for 6G74 and 4M41 engines. So, the oil pump is absolutely used and is critical to engine health on this model.

The Pajero’s oil pump does the heavy lifting that keeps the engine alive. Driven off the crank, the gerotor/gear‑type pump pulls oil through the pickup strainer, pressurises it, and feeds bearings, camshafts, lifters, and the turbo on DI‑D models. That pressurised film of oil is what prevents metal‑to‑metal contact, especially on cold starts and long climbs with a loaded trailer. Without a healthy pump and clean oil, wear ramps up fast.

While the pump itself isn’t a scheduled replacement item, good servicing keeps it happy. Stick with quality oil that meets the correct spec and change it on time, a sludged sump or clogged pickup is a pump killer. During bigger jobs — like a timing belt service on the 6G74 or any front cover work on the 4M41 — it’s smart to inspect the pump’s clearances, the pickup O‑ring, and the front crank seal. If the pump housing or gears are scored, or pressure tests poorly with a mechanical gauge, replacement is the safe move.

• Common warning signs: flickering oil light at hot idle, rattly top end on start‑up, obvious bearing knock, or metallic glitter in the oil.
• If the oil light stays on after start, shut it down — don’t “see if it clears”.

Replacement pointers for a 2001 Pajero: use an OEM or reputable aftermarket pump, renew the pickup O‑ring and front seal, clean the strainer and sump, and apply the correct sealant on the front cover. Always prime the new pump (packing with assembly lube or pre‑filling as per the workshop manual) so it builds pressure immediately. Torque fasteners to spec and verify pressure with a gauge on first start. On the 6G74, access aligns with timing belt work, on the chain‑driven 4M41, expect more disassembly to remove the front cover. Done right, the pump should run happily for hundreds of thousands of kilometres.

Popular questions about 2001 Mitsubishi Pajero oil pumps

Does a 2001 Pajero have an oil pump?
Yes. Both the 3.5‑litre 6G74 petrol and the 3.2‑litre 4M41 DI‑D diesel use a crank‑driven, internal oil pump in the front timing case. It’s essential for maintaining oil pressure to all critical engine components.

When should the oil pump be replaced?
There’s no fixed interval. Replace it if oil pressure is below spec, if there’s scoring/wear found during inspection, or when doing major front‑of‑engine work. Many owners inspect the pump during a 6G74 timing belt service or any 4M41 front cover job.

How can they make sure oil pressure is right after work?
Prime the pump before first start, use the correct oil, and check with a mechanical gauge to confirm pressure meets workshop specifications. If the oil light stays on, shut it down and recheck immediately.