Toyota W transmission

Toyota Motor Corporation's W family is a family of RWD/4WD transmissions built by Aisin. Physically, these transmissions have much in common (like the bell housing-to-body bolt pattern) with other Aisin-built transmissions, like the Jeep AX-5 and the Toyota G-series. The W55, W56, W57, W58, and W59 are externally and internally very similar aside from the gear ratios.

4-speed transmission offered in base model vehicles in the 1970s. Often referred to as a Celica or Corona steel case 4-speed. The housing is steel as opposed to aluminium in later W series boxes.

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4-speed transmission.

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The W45 is a 4-speed variant of the W55 alloy case box. It replaced the steel case W40 around Oct 1980. It also came as a stock transmission in some of the 1981 base model Toyota RWD pickups.

The W45 case was made of aluminium alloy.

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Applications: 1980~ RWD Toyota Cars

Often called the "steel-case" transmission for its steel shell, in contrast to the later W-series transmissions' aluminium case. This transmission is mostly associated with early Celicas of the 1970s. It is also shorter from the bellhousing face to the transmission mount than the later aluminium case W-series transmissions, despite using the same mount.

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Came in early 1980s CE71 Corolla wagon. Similar ratios as W52 except 5th

Composition is alloy.

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Used in Australian delivered 2WD SR5 Extra-Cab Hilux (YN57)

Composition is steel.

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Applications: 1984–1988 2WD Hilux (AU)

This was the first of the aluminium-cased W-series transmissions. The W55 replaced the steel-cased W50, reducing the vehicle weight by 10 kg. It features mostly in 4 cylinder powered vehicles.

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A common truck transmission that came in 2-wheel and 4-wheel drive varieties.

Its ratios differ in comparison to the base W55 in the 1st and 2nd gears only; this is to allow a slightly heavier vehicle (truck) to get up to speed slightly quicker than if geared like a car.

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