The manual transmissions found in Pick-Ups, Tacomas, T100s and 4Runners are denoted by their Toyota model designations: G40, G57, G58, W46, W55, W56, W59, R150 and R150F. The G40 and W46 units are 4-speed transmissions; the others are 5-speeds. The G58, W56, W59 and R150F are used in 4WD applications and are connected to the transfer case. The R150F is coupled to the 3VZ-E engine in 4WD applications. See General Information & Maintenance for more information on models.