Clearance and Design Specifications

Manual Transmission

GENERAL INFORMATION
Four manual transmission models are used in Jeep vehicles; they are Models T4, T5, T-176, and T-1SA.

Models T4 and T-176 are 4-speed, constant mesh units providing synchromesh engagement in all forward gear ranges. The Model T5 is a 5-speed constant mesh unit providing synchromesh engagement in all forward gear ranges. Model T-1SA is a 4-speed, constant mesh unit providing synchromesh engagement in second, third, and fourth gear ranges only. First (low) gear is not synchronized in this transmission.

Model T4 is used with four- and six-cylinder engines. Model T5 is optional on four- and six-cylinder models except six-cylinder CJ-5 vehicles. Model T-176 is used with four-, six- and eight-cylinder engines. Model T-18A is used in J-20 Truck models only.

All four transmission models are floor shift units. Column shift units are not available in any Jeep model.

The shift mechanism on all transmission models is located within the shift control housing which also serves as the transmission top cover. The shift mechanism does not require adjustment and can be serviced independently of the transmission.

Model T4 Specifications:

Models T4 & T5 Gear Ratios:

T5 Specifications:

Models T4 & T5 Gear Ratios:

Model T-176 Specifications:

Models T-176 & T-18A Gear Ratios:

Model T-18A Torque Specifications:

Models T-176 & T-18A Gear Ratios: