Overview
The Crown Automotive J0939335 is a replacement manual transmission output seal for T98 or T18 manual transmissions. An output seal keeps lubricant in at the rear of the transmission, where the output shaft passes out of the case. It fits early Jeep CJ models built from 1959 through 1979.
It is a direct fit for the vehicles named below, which suits owners maintaining or restoring older CJ-series Jeeps.
Key features
- Replacement manual transmission output shaft seal
- Designed for T98 or T18 manual transmissions
- Direct fit designation from Crown Automotive
- Crown part number J0939335 and UPC 848399055580
Restoring an old CJ drivetrain
On older CJ-series Jeeps, the output seal is one of several gaskets and seals that tend to age together. Hardened rubber, old sealant and shaft wear can all contribute to leaks at the rear of the transmission. When a seal is replaced, the output shaft surface and the seal bore deserve a close look, because a grooved shaft will wear a new seal quickly.
Good preparation saves time. Drain the fluid, clean the area around the seal, and have the correct replacement on hand before opening the job. Many restorers also replace the transfer case seals and the shifter area seals when they are already accessible, to avoid repeat leaks later.
- Check the output shaft for grooves or pitting
- Clean old sealant from the case face
- Refill with the correct transmission fluid and check for leaks
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J0939335 |
| UPC | 848399055580 |
| Part type | Manual transmission output shaft seal |
| Transmission application | T98 or T18 manual transmission |
Vehicle fitment
It fits the 1959 Jeep CJ3; the 1959–1960 and 1966–1975 Jeep CJ5; the 1959–1960 and 1966–1974 Jeep CJ6; the 1976–1979 Jeep CJ7; the 1966–1967 Jeep Commando; and the 1955–1958 Willys CJ-3, CJ-5 and CJ-6.
Wrangler, Cherokee and other Jeep models are not covered. Match your vehicle’s year, model and trim before ordering the part.
What’s included
Only the output seal is named. No additional parts are described.
