ZF 6-Speed

The ZF transmission is a 6-speed, fully synchronized transmission.

The transmission features an aluminum housing with an integral clutch housing. Because of the aluminum housing, the tapered roller bearings of the transmission shafts must be fitted under preload. This is because heat expansion of the aluminum transmission case is greater than that of the steel alloy mainshaft and countershaft. If the bearings were not pre-loaded, this would result in excessive end play when the transmission case expands in warm, loaded operating conditions.