Parts for your 2000 Toyota Bb-Transmission filter

2000 Toyota bB transmission filter — what it has and how to look after it

Referencing Toyota’s Electronic Parts Catalog and the Toyota automatic transmission overhaul/repair sections for the NCP30-series bB, the 2000 Toyota bB fitted with the 4‑speed automatic uses an internal transmission oil strainer (often called a transmission filter) located under the sump pan. Aisin service literature for the U- and A‑series 4AT used in this model family also illustrates a pan, magnets, and a replaceable strainer screen. By contrast, the 5‑speed manual bB has no replaceable transmission filter — just oil that’s drained and refilled on schedule.

For owners of the automatic bB, that internal strainer is there to catch clutch material and fine metal particles, keeping the hydraulic circuits clean so shifts stay smooth. It’s not a screw‑on canister, it’s a flat screen assembly bolted inside the pan alongside a couple of magnets. Toyota documentation for this era typically doesn’t set a strict replacement interval for the strainer, treating it as an inspect/replace item when the pan is removed. In everyday workshop practice across Australia and New Zealand, it’s common to drop the pan, clean the magnets, and replace the strainer and pan gasket when there are shift concerns, after heavy use, or every 120,000–160,000 km as preventative maintenance.

Fluid quality matters more than anything. The 2000 bB automatic specifies Toyota ATF Type T‑IV for the Aisin 4‑speed. A conservative approach is a drain‑and‑fill every 60,000–80,000 km (or sooner for lots of city stop‑start, towing, or hot‑weather driving). When the pan’s off, fit a new strainer and gasket, clean the magnets until they’re free of sludge, and reassemble with correct torque on the pan bolts to avoid warping or leaks.

Level checking is just as important as the fluid itself. Refill the exact amount drained, start the engine, cycle through all gears with the foot brake on, and recheck the level on level ground with the ATF at operating temperature. Most 2000 bB autos have a dipstick, follow the marking and temperature procedure noted in the service manual.

• Typical signs the strainer and fluid need attention: delayed engagement when selecting Drive/Reverse, flare or harsh shifts, shudder on take‑off, and dark or burnt‑smelling ATF.
• Manual‑trans bB owners: there’s no transmission filter to replace. Stick to the recommended gear oil and interval, and inspect the magnetic drain plug at changes.

Popular questions

Does the 2000 Toyota bB have a transmission filter?
Yes — if it’s the 4‑speed automatic. It uses an internal transmission oil strainer under the pan, as shown in Toyota repair literature and parts catalogues for the NCP30‑series bB. The 5‑speed manual version doesn’t use a replaceable filter.

How often should the transmission filter be replaced?
Toyota doesn’t set a strict interval for this era, the strainer is typically replaced whenever the pan is removed, during an overhaul, or as preventative maintenance around 120,000–160,000 km. Many workshops also refresh the ATF every 60,000–80,000 km and do the strainer when the pan’s off.

What ATF should be used, and how much?
Use Toyota ATF Type T‑IV for the 2000 bB automatic. A drain‑and‑fill usually returns about 2.5–3.0 litres, while the total system capacity is higher. Always confirm by transmission code and check level at the correct temperature after refilling.