Parts for your 1990 Mitsubishi Pajero-Engine mount

1990 Mitsubishi Pajero engine mount: what it does and when to replace it

Yes, the 1990 Mitsubishi Pajero absolutely uses engine mounts. This is confirmed by multiple technical sources, including the Mitsubishi Pajero/Montero Workshop Manual for the L040/L141 series (1989–1991), the Mitsubishi ASA Electronic Parts Catalogue (EPC) under Engine Mounting group, and general service guides such as the Haynes Repair Manual for Mitsubishi Pajero/Montero 1983–1996. These references show dedicated left and right engine insulator mounts, plus a transmission mount that works with them to hold the powertrain in place.

On this era Pajero—whether it’s the diesel 4D56, the 2.6 petrol 4G54, or the 3.0 V6 6G72—the engine mounts are there to support the engine, isolate vibration, and control movement under load. They protect the driveline by keeping alignment true, reduce noise and harshness in the cabin, and help prevent strain on exhaust, hoses, and wiring when the engine rocks on take-off or over corrugations.

As part of regular servicing, it pays to inspect the mounts for perished rubber, collapsed height, oil saturation (from engine or power steering leaks), and loose or cracked brackets. Common signs a Pajero’s mounts are on the way out include:

• Noticeable vibration through the steering wheel or seat at idle
• Clunks or thumps on take-off, gear changes, or over bumps
• Excessive shifter movement or fan shroud/exhaust contact
• Visible sagging or splitting of the rubber insulators

If replacement is needed, a few workshop-friendly tips make life easier:

1. Support the sump with a jack and a block of wood to take the engine’s weight.
2. Replace mounts in pairs and inspect the transmission mount at the same time.
3. Loosen, align, then torque fasteners with the engine settled on its weight—follow the workshop manual for torque specs.
4. For off-road use, consider quality OEM or reputable heavy-duty mounts rather than ultra-cheap options.
5. After fitting, check fan and shroud clearance, exhaust flex, and hose strain, then road test for vibration.

There’s no strict kilometre-based change interval, but checking mounts at each major service and after fluid leaks or harsh off-road trips is smart. Fresh mounts can transform how tidy a 1990 Pajero feels, making it nicer to live with on the daily commute and sturdier on the rough stuff.

Popular questions

How many engine mounts does a 1990 Mitsubishi Pajero have?
Most 1990 Pajeros run two primary engine mounts (left and right) and a transmission mount that works with them. Exact bracket shapes and part numbers vary by engine (4D56, 4G54, 6G72) and market, but the basic three-mount setup is typical.

Can it be driven with a worn or broken engine mount?
It might still move under its own steam, but it’s not a good idea. A failed mount can let the engine shift, stressing the exhaust, hoses, wiring, and even driveline alignment. It can also cause vibration and knocking that feel worse over time. If there are clear symptoms, plan a repair sooner rather than later.

What torque should be used on the mount bolts?
Torque varies by engine, mount design, and bolt size. Always refer to the Mitsubishi Pajero/Montero Workshop Manual for the exact spec for your engine and bracket combination. As a rule, torque with the engine supported and then finalise once the weight is settled on the new mounts.