Parts for your 2000 Mitsubishi Pajero-Transmission filter

2000 Mitsubishi Pajero transmission filter — what it does and how to look after it

For the 2000 Mitsubishi Pajero (NM) with the automatic gearbox, a transmission filter is fitted — but it’s an internal oil strainer rather than an external, easily replaceable cartridge. Technical references such as the Mitsubishi Pajero NM/NP Factory Service Manual (Automatic Transmission section for the V4A51 unit), the Mitsubishi ASA electronic parts catalogue (listing an A/T “oil strainer” for NM Pajero), and Australian workshop guides like Gregory’s/Haynes note that this strainer sits inside the transmission above the sump pan, and Mitsubishi does not list it as a routine service item. Instead, scheduled maintenance focuses on the correct ATF (Mitsubishi/DiaQueen SP‑III) and periodic fluid changes, with pan and magnet cleaning when opened.

On this Pajero, the transmission filter’s job is to catch fine clutch material and debris, protecting the valve body and solenoids so shifts stay smooth and line pressure remains stable. Because it’s a metal-mesh style strainer, it’s designed to flow well with SP‑III and isn’t meant to clog quickly in normal use. That’s why Mitsubishi treats it as “inspect/clean or replace if required” when the pan is removed or the transmission is overhauled, rather than something swapped at every service.

As part of sensible servicing for a 2000 Pajero, the workshop will prioritise fresh SP‑III ATF at sensible intervals — typically every 40,000–60,000 km for mixed or heavy Australian/NZ conditions, sooner if towing, sand driving, or lots of stop‑start. If the pan is coming off (for example, to address a seep, to check magnets for excessive swarf, or to chase shift quality issues), it’s a good time to clean the pan and magnets, inspect the strainer, and replace the strainer gasket and pan gasket. If the strainer shows damage or heavy contamination, replace it with a quality OEM‑spec unit.

Avoid “power flushing” a high‑kilometre, unserviced transmission, multiple drain‑and‑fills or a controlled fluid exchange with SP‑III equivalent is a safer bet. Signs that warrant inspection include delayed engagement, flare between gears, or unusually dark/burnt‑smelling fluid. Using the right ATF, keeping the level correct (checked at the specified temperature and procedure), and addressing leaks early will do more for longevity than unnecessary filter swaps.

• Fluid: Mitsubishi/DiaQueen ATF SP‑III (or a proven equivalent meeting SP‑III spec)
• Service focus: Fluid condition and level, pan/magnet clean when opened, inspect/replace internal strainer only if required
• Driving harsh conditions: Shorten intervals, monitor shift quality closely

Does a 2000 Mitsubishi Pajero have a transmission filter?

Yes — it uses an internal oil strainer inside the automatic transmission above the sump pan. It’s not an external spin‑on or in‑line type, and it’s not listed as a routine service item in the factory schedule.

How often should the transmission filter be replaced on a 2000 Pajero?

It generally isn’t replaced on a schedule. The strainer is inspected when the pan is removed, replace it only if it’s damaged or heavily contaminated. The regular service item is the ATF (SP‑III), typically every 40,000–60,000 km in Australian/NZ conditions.

Can the filter be serviced without removing the transmission?

Yes. The pan can be removed in situ to access the magnets and internal strainer. Many workshops will clean the pan and magnets and assess the strainer any time the pan is off for leaks or shift concerns.