Manual Transmission Parts for Jeep CJ7

Why a CJ7 can hide six different gearboxes.

In just eleven model years Jeep fitted more manual gearboxes to the CJ7 than in the three decades before it. At launch in 1976 the light three-speed T150 sat alongside the cast-iron four-speed T18 – the toughest unit ever fitted to a CJ from the factory. In 1980 the four-speed T176 and its sister T177 took over with aluminium cases, joined by the even lighter SR4 for the smaller engines. From 1982 came the T4 and the five-speed T5, which finally gave the CJ7 a genuine overdrive. For parts hunting that means one thing: model year alone is not enough. Two CJ7s from the same year can carry different gearboxes, and while many small parts – shifter boots, locking pins, oil seals – carry over between types, gears, shafts and synchronizer hubs are strictly type-specific. Pick your gearbox type first and the part numbers fall into place.

The gearboxes you will find here

• T18 transmission (1976-1979): The cast-iron four-speed with its extremely low first gear – bearings, gasket kits, synchronizing hubs and shift components.
• T150 transmission (1976-1979): The light three-speed with the widest parts coverage in the shop – from the main shaft through to the complete master overhaul kit.
• T176 & T177 transmission (1980-1986): Four-speeds with aluminium cases; synchronizer assemblies, shift forks, case components and shift linkage.
• SR4 transmission (1980-1983): The lightest of the family – individual gears, synchro components, snap rings and overhaul kits.
• T4 transmission (1982-1986): The four-speed of the final CJ years with cluster gear, bearing retainers and clutch components.
• T5 transmission (1982-1986): The five-speed with overdrive – blocking rings for all five gears, bearings and overhaul kits.

Where the parts for your CJ7 gearbox come from.

Across all six families Crown Automotive supplies the backbone: shafts, gears, bearings, seals and complete overhaul kits from one source, keeping part numbers consistent through an entire rebuild. Omix contributes cluster gears, synchro components and bell housings, Platinum Driveline flywheels and complete clutch sets, Standard Ignition the back-up lamp switches and Mopar individual original gaskets – American suppliers that have served the classic Jeep driveline for decades.

Identifying your gearbox, torque specs, shipping times.

Not sure which gearbox sits in your CJ7? We narrow it down with you from model year, engine, gear count and transmission code – and tell you which small parts carry over between types and which are strictly type-specific. We also advise on installation sequence, tightening torques and what the master overhaul kits actually contain. Just send us your VIN. Your order leaves the warehouse in Germany as quickly as possible.