Parts for your 1992 Mitsubishi Pajero-Transmission filter

1992 Mitsubishi Pajero transmission filter — what’s actually fitted?

Short answer: there isn’t a replaceable transmission filter on a 1992 Mitsubishi Pajero automatic. Mitsubishi’s factory information for the NH/NJ era (1991–1996) shows these autos (V4AW2/V4AW3) run an internal, reusable metal oil strainer inside the pan, backed up by pan magnets. The workshop schedule calls for ATF changes but does not list a filter replacement. This is stated in the Mitsubishi Pajero/Montero Factory Service Manual (Group 22A – Automatic Transmission) and is echoed in the ATSG V4AW2 technical manual and the Haynes Mitsubishi Montero/Pajero 1983–1999 manual, all of which describe cleaning/inspecting the strainer only during overhaul.

Why Mitsubishi didn’t use a service filter on these: the design relies on a coarse mesh strainer to protect the pump from big bits, while magnets collect fine wear particles. Keeping the fluid fresh is the primary service item. That approach keeps line pressure consistent off-road and reduces the chance of a paper element restricting flow if the box sees hard use.

So, if someone’s hunting down a “transmission filter” for a 1992 Pajero auto, it’s not a part they’ll routinely replace. What matters more is fluid condition and pan cleanliness. If the transmission shows symptoms (flare shifts, shudder, delayed engagement), a pan drop to clean the magnets and inspect the strainer can be worthwhile, otherwise, leave the strainer alone.

• ATF to use: follow the vehicle label/manual. These units were originally specified for Dexron-II, modern practice is a quality Dexron-III that meets the earlier spec. Don’t mix types.
• Service interval: as a rule of thumb, change ATF every 40,000–60,000 km (or 2–3 years), sooner if towing, sand work, or frequent low-speed off-road use.
• Drain-and-fill tips: expect only part of the capacity to drain (often around 4–5 litres). Measure what comes out, refill the same amount, then fine-tune the level per the dipstick procedure (warm, level ground, engine idling, cycle through gears).
• Pan service: if the pan is removed, clean the magnets, wipe the pan spotless, fit a new pan gasket, and torque bolts evenly. Inspect the strainer for damage, it’s typically cleaned only if the box is being overhauled.
• Manual gearbox note: if it’s a manual 1992 Pajero, there’s no transmission filter at all—just change the manual trans oil to the correct spec at the recommended interval.

Technical sources: Mitsubishi Pajero/Montero NH–NJ Factory Service Manual (1991–1996), Group 22A Automatic Transmission (V4AW2/V4AW3), ATSG Mitsubishi V4AW2 Technical Manual, Haynes Mitsubishi Montero/Pajero 1983–1999 Repair Manual. All identify a reusable internal strainer and list fluid changes as routine service rather than filter replacement.

Popular questions

Does a 1992 Pajero have a replaceable transmission filter?
Not in the usual sense. The auto runs an internal metal strainer and magnets, with routine service focused on changing the ATF. The strainer is normally only cleaned during overhaul, not replaced as a consumable.

How often should the ATF be changed on a 1992 Pajero?
Every 40,000–60,000 km is a sensible interval, sooner if it tows, works off-road, or sees hot conditions. Check the colour and smell—dark or burnt-smelling fluid means change it. Use the correct Dexron-rated fluid specified for the vehicle.

Can an external inline transmission filter be added?
Yes, some owners add an inline filter in the cooler return line for extra protection. If doing so, use transmission-rated hose and fittings, mount it where it won’t get knocked, and have an auto trans specialist confirm it won’t restrict flow.