T86 3-Speed Borg-Warner Manual Transmission Parts Jeep CJ6
Bearings, Seals & Shift Mechanism for Reliable Shifting (1966–1967).
Why the T86 Manual Transmission in the Jeep CJ6 Needs Attention After Decades.
The Warner T86 was the 3-speed manual transmission Jeep installed in the CJ6 during the 1966/67 model years, before it was replaced by later gearboxes such as the T87 or T150. After nearly six decades in service, almost every remaining T86 shows the same wear patterns: the input shaft oil seal hardens and starts leaking, letting gear oil escape and starving internal lubrication. The needle bearings on the countershaft and the output bearing on the mainshaft wear down from decades of rotation, causing noticeable play or running noise. Mainshaft nuts and washers loosen over time, spacers lose their exact fit, and the shift mechanism itself – poppet balls, detents and the shifter knob – suffers from constant use. Anyone restoring or overhauling their T86 should inspect these wear parts in time, before more serious transmission damage occurs.
- Input Shaft & Countershaft Bearings and Seal: The input shaft oil seal, the countershaft needle bearing, and the input shaft/rear mainshaft bearing.
- Mainshaft Output Bearing & Spacer: The mainshaft output bearing along with the matching spacer for a precise bearing fit.
- Mainshaft Nut & Washer: The mainshaft washer together with the mainshaft nut itself for securing the mainshaft.
- Shift Mechanism: The poppet ball for the shift detent and the shifter knob for everyday operation.
American Manufacturing Quality for Your T86.
All parts for the T86 manual transmission – from bearings and seals to mainshaft nuts and the shifter knob – come from Crown Automotive, one of the best-known names in the American spare parts market for classic Jeep and Willys vehicles. These reproductions are built to OEM-quality standards and reflect proven American engineering that still holds up after decades in the field.
Your Partner for T86 Overhauls in the Jeep CJ6.
Whether you need a single wear part or a complete transmission overhaul, we're happy to advise you on installation order, sealant and torque specs during assembly, as well as compatibility questions regarding other transmission variants like the T14, T15 or T90. Your order ships from our warehouse as fast as possible.