Description Data, Updated
Automatic TransmissionOn 3.2 and 6.0 litre models, the transmissions are carried over from the previous model year. On normally aspirated 4.0 litre models, the transmission is carried over except for the torque converter, which is now the lightweight type recently introduced on the XJS 4.0 litre models.
The GM 4L80E four-speed transmission that is installed in 6.0 litre models is installed as standard in the supercharged 4.0 litre model, except in European markets where it is an option. The supercharged 4.0 litre model also has the lightweight torque converter.
On all models with the GM 4L80E transmission, transmission fluid is cooled by a six plate cooler integrated into the left side of the main radiator. All models except the 3.2 litre have a new dipstick. Normally aspirated 4.0 litre models also have a new transmission fluid filler tube.