T98 4-Speed Borg-Warner Transmission Parts for Willys CJ3B
Bearings, Gasket Kits & Hardware for Reliable Power Transfer (1953–1964).
Why the T98 Transmission in the Willys CJ3B Wears Out After Decades.
The rugged T98 four-speed transmission was built for heavy-duty use, and many units in the Willys CJ3B are still running today – but wear after more than 60 years is normal and should be checked regularly. Input and output shaft bearings lose their precision through mileage and low oil levels, showing up as noise and play. Seals and gaskets harden over time, lose their elasticity, and start leaking gear oil. Lock nuts on the mainshaft loosen from vibration, while shift rail balls and springs in the shifting mechanism wear down, leading to spongy or imprecise gear changes. Anyone restoring a historic Willys or Jeep CJ, or driving one off-road, should keep a close eye on these wear parts to avoid further transmission damage.
- Bearings: The input shaft bearing and the rear mainshaft bearing keep the transmission running smoothly and precisely.
- Seals & Gaskets: The complete gasket kit including seals, the individual seal, and the transfer case housing gasket keep the transmission reliably sealed.
- Shift Mechanism: The shift rail ball ensures clean, positive gear engagement.
- Mainshaft Hardware: The washer and the lock nut secure the mainshaft reliably.
American Quality from a Single Source.
Every part in this category – from bearings to gasket kits and lock nuts – comes from Crown Automotive, one of the most established names in Jeep and Willys parts with American roots. These OE-quality reproductions are precision-made to meet the original manufacturer's specifications.
Your Partner for T98 Transmission Repair.
Whether you need a single wear part or a full overhaul, we're happy to advise you on installation order, torque specs, and the correct oil fill after replacement. Since many parts also fit other Willys and Jeep CJ models with T14, T15, T18, T90, T150, or T176 transmissions, we're glad to check exact compatibility for your vehicle on request. Most items ship from stock within 1-2 days.