T86 3-Speed Borg-Warner Transmission Parts for Jeep CJ5
Bearings, Seals and Shift Components for Your 3-Speed Transmission (1966–1967).
Why the T86 Transmission in the Jeep CJ5 Wears Out After Decades of Use.
The T86 transmission was factory-installed in Jeep CJ5 models and, as a rugged 3-speed unit, transfers power from the engine to the transfer case and axles. After decades of use, typical wear shows up: the input shaft seal hardens and starts leaking, allowing gear oil to escape and reducing lubrication of the gear set. Bearings on the mainshaft and countershaft wear out, showing up as whining noises or play in the gear train. Nuts loosen from vibration, spacers wear down and cause excess end-play. The shift mechanism itself — poppet ball and shift knob — wears from thousands of shifts and becomes stiff or rattles. Whether rebuilding the whole gearbox or replacing a single wear part, you'll find the relevant components here for a proper repair.
- Bearings: The main shaft output bearing and the input shaft T14 / rear mainshaft bearing keep the gear train running smooth and play-free.
- Seal: The input shaft oil seal reliably seals the transmission against oil leaks.
- Mainshaft Hardware: The mainshaft nut secures the mainshaft, and the spacer provides correct end-play.
- Shift Mechanism: The poppet ball and shift knob provide precise, comfortable shifting.
American Engineering for Your T86 Transmission.
All parts for the T86 transmission come from Crown Automotive – one of the best-known American manufacturers of Jeep and Willys parts. Built to series-production quality, these reproductions meet OEM specifications and bring genuine American engineering straight into your gearbox – reliable and precise.
Your Partner for the T86 Transmission Rebuild.
Whether you're planning a full rebuild or just need a single wear part, we're happy to advise on installation order, torque specs, and compatibility with related gearboxes like the T14, T15, T90, T98, or T150. We can also help confirm the exact model-year fitment for your CJ5. Your order ships from our warehouse as fast as possible, so you can get your transmission back together quickly.