SR4 Manual 4-Speed Borg-Warner Transmission Parts for Jeep CJ5
Shafts, Gears, Bearings & Seals for Reliable Shifting (1980–1983).
Why the SR4 Transmission in the Jeep CJ5 Wears Out After Decades.
The SR4 was the final 4-speed transmission option in the Jeep CJ5, produced from 1980 until the model's end in 1983, reliably transferring power from the 2.5- to 4.2-liter engines of these later years to the drivetrain. After decades of service, though, typical wear shows up: 1st and 2nd gear synchronizer rings wear thin from friction and cause notchy shifting, while input and output shaft bearings develop play from sustained load. Oil seals harden and start leaking, letting gear oil escape. Shift forks and the shifter boot wear mechanically, snap rings and thrust washers lose their fit from vibration, and under heavy use the housing bell can develop cracks. Anyone running an SR4 off-road or on larger tires should check these wear parts regularly to avoid costly follow-on damage to shafts and gears.
- Shafts & Gears: The input shaft and the cluster gear form the mechanical heart of the transmission.
- Synchronizers & Shift Forks: The 1st and 2nd gear blocking ring set and the 3rd and 4th gear shift fork keep shifting precise.
- Bearings & Seals: The output shaft bearing and the gasket and seal kit prevent oil leaks and play.
- Repair Kits & Small Parts: The master overhaul kit and the small parts master repair kit cover a complete rebuild.
- Shifting, Controls & Switch: The shifter boot and the reverse gear switch ensure reliable shifting and accurate signaling.
- Housing & Gaskets: The housing bell and the adapter gasket form the stable foundation of the transmission.
Proven American Brand Quality for the SR4 Transmission.
Shafts, gears, bearings, gasket kits, and shift components come from Crown Automotive – American engineering that has proven itself in the Jeep parts market for decades. The housing bell is supplied by Omix, also American-made, the reverse gear switch comes from Standard Ignition, and the input gasket is from Mopar.
Your Partner for SR4 Transmission Repairs.
Whether you need a single bearing or a complete SR4 overhaul, we're happy to advise on torque specs, the correct installation order for synchronizer rings and shafts, and compatibility questions with the transfer case and clutch. We're also glad to help if you're unsure whether your CJ5 actually has the SR4. Most items ship from stock as fast as possible after your order.