Parts for your 2004 Mitsubishi Pajero-Head gasket

2004 Mitsubishi Pajero head gasket — purpose, care, and when to replace

Technical sources confirm the 2004 Mitsubishi Pajero uses a conventional cylinder head gasket across its engines (3.5‑litre 6G74 V6, 3.8‑litre 6G75 V6, and 3.2‑litre 4M41 DI‑D diesel). The Mitsubishi Pajero NM/NP Service Manual (Engine Overhaul sections), the Mitsubishi ASA Electronic Parts Catalogue, and common aftermarket catalogues (e.g., Victor Reinz, Ajusa, Permaseal) all list head gaskets and complete head set kits for these engines. So the head gasket is very much relevant to the 2004 Pajero.

On this model, the head gasket’s job is to seal combustion pressure and keep engine oil and coolant in their own passages under the cylinder head. Modern multi‑layer steel (MLS) designs, as specified for these engines, handle heat cycling and clamping loads well, provided cooling and torque specs are maintained. When healthy, the gasket helps the V6s and the DI‑D diesel run smoothly, efficiently, and without cross‑contamination.

• Common warning signs of trouble include unexplained coolant loss, overheating under load, white exhaust vapour on start‑up, milky oil, oily coolant, pressurised hoses after an overnight sit, rough cold starts, and sweet smells from the exhaust.
• A chemical block test or cylinder leak‑down can help confirm concerns before any strip‑down.

A head gasket isn’t a routine service item