Parts for your 2002 Toyota Land cruiser-Transmission filter

2002 Toyota Land Cruiser transmission-filter: what it is, whether it’s fitted, and how to look after it

For the 2002 Toyota Land Cruiser 100 Series, the presence of a transmission-filter depends on the gearbox. The widely sold automatic models (Aisin A343F 4-speed) do have an internal in-pan “oil strainer” that functions as the transmission-filter. This is documented in Toyota’s factory repair information for the A34x family, which specifies pan removal, magnet cleaning and “oil strainer” replacement as service operations. Toyota parts catalogues list the strainer and pan gasket for these autos, backing up that it’s a fitted, serviceable part. By contrast, manual models (H150F/H151F) run gear oil and do not use a transmission-filter at all—no ATF circuit, no filter.

On an automatic 2002 Land Cruiser, the transmission-filter’s job is simple but crucial: it screens fine clutch material and wear debris from the ATF before it’s fed back through the pump, valve body and torque converter. Along with the pan magnets, it helps reduce varnish and sticking valves, keeping shifts smooth and safeguarding the pump and bearings when the vehicle tows, tours or works off-road in Aussie and Kiwi conditions.

Servicing advice for the A343F is shaped by Toyota’s procedures: the strainer sits inside the transmission sump, so it’s serviced when the pan is off. Many technicians replace the strainer when doing a pan-drop service or whenever shift feel is affected, others inspect and refit if it’s clean and undamaged. In the real world, a practical rhythm is to refresh ATF at around 60,000–80,000 km if you tow, see high ambient temps, or do heavy off-road, and to pull the pan for magnet cleaning and strainer inspection or replacement at roughly 120,000–160,000 km, or sooner if the ATF shows visible debris.

Good workshop practice on this gearbox includes:

• Use the correct ATF (Toyota T‑IV/JWS 3309 for the A343F), keep the vehicle level, and set fluid level with the transmission at operating temperature.
• Replace the strainer O‑ring and pan gasket, torque pan bolts evenly, and clean the magnets thoroughly.
• Cycle through all gears after refill, then re-check level hot.

If the Land Cruiser has the manual H150F/H151F, there’s no transmission-filter to worry about—stick to the specified gear oil and change intervals from the owner’s manual or service manual, and inspect for leaks and swarf on the drain plug magnet.

Popular questions

Does a 2002 Land Cruiser have a transmission-filter?
Automatic models with the Aisin A343F do—Toyota calls it an ATF “oil strainer” inside the pan, alongside serviceable magnets. Manuals (H150F/H151F) don’t use a transmission-filter because they run gear oil rather than ATF pressure circuits.

How often should the transmission-filter be replaced?
There’s no single fixed kilometre figure in Toyota literature, but a practical approach is to inspect or replace the strainer whenever the pan is off. Many owners pair a pan-drop, magnet clean and new strainer at 120,000–160,000 km, sooner for heavy towing, hot climates or lots of low-range work.

What ATF should be used in the 2002 automatic, and how much?
The A343F specifies Toyota Type T‑IV (JWS 3309). A simple drain-and-fill replaces only part of the total capacity, a pan-drop replaces more. Always verify spec and capacity for the exact variant, refill carefully and set the hot level per the factory procedure.