Parts for your 1991 Mitsubishi Pajero-Engine mount

1991 Mitsubishi Pajero engine mount — purpose, care and when to replace

Engine mounts are absolutely fitted to the 1991 Mitsubishi Pajero. Technical sources that document this include the Mitsubishi Pajero/Montero factory workshop manuals for the V1/V2/V3/V4 series, the Mitsubishi ASA Electronic Parts Catalogue (EPC), and mainstream repair guides such as the Haynes Mitsubishi Pajero/Montero 1983–1996 manual. These sources specify the engine mounting insulators and related brackets used across 4D56 diesel and 6G72 V6 variants, confirming the part is relevant on this model year.

On a ’91 Pajero, the engine mounts do a simple but vital job: they hold the engine in place while isolating vibration from the cabin. Each mount is a rubber (sometimes hydraulic) insulator that cushions the engine against idle shake, road shock and the twist that happens when you get on the throttle. In a body-on-frame 4x4 like the Pajero, good mounts help keep driveline angles happy, reduce harshness through the chassis and stop the fan, shrouds and hoses from copping a hard time under the bonnet.

When they age, the rubber hardens, collapses or tears. Typical symptoms owners notice include:

• More vibration at idle or when selecting Drive/1st
• Clunks on take-off or gear changes, or a thunk when lifting off
• Excessive engine movement when blipping the throttle in neutral
• Odd shroud/fan contact or exhaust knocking against the body

Replacement is straightforward for a seasoned DIYer with stands and a decent jack, but it’s still a job that needs care. Support the sump with a block of timber, undo the mount-to-bracket and mount-to-crossmember fasteners, then lift the engine just enough to slide the old insulator out. Refit loosely, settle the engine, then torque to the specs in the factory manual. It’s smart to replace mounts in pairs, and to inspect the transmission mount at the same time, as mixed stiffness can introduce new vibrations.

As part of routine servicing, a quick check goes a long way: look for perished rubber, oil saturation (spilled engine oil and diesel can attack the rubber), and torn bonds. If the vehicle sees corrugations, towing or off-road work, shorten the inspection interval. While there’s no fixed kilometre-age, many Pajeros benefit from fresh mounts somewhere after a couple of decades or when driveline work (clutch, gearbox, exhaust) is already on the cards. A smooth, quiet idle and tighter driveline feel are the usual rewards.

• How many engine mounts does a 1991 Pajero have?
  Most 1991 Pajero setups run two primary engine mounts (left and right) plus a separate transmission mount at the rear of the gearbox. Some variants use different insulator styles, but the basic layout is consistent across diesel and V6 models.
• Can the engine mounts be changed at home?
  Yes, with the right gear. Use axle stands, a jack with a timber block to support the sump, and follow the workshop manual. If fasteners are corroded or access is tight, a workshop may be quicker and safer.
• What’s the usual lifespan of Pajero engine mounts?
  There’s no strict interval. Many original mounts last well over 150,000 km, but age, heat, oil exposure and off-road use speed up wear. Inspect during every major service and replace at the first clear signs of collapse, tearing or excessive vibration.