Overview
The Crown Automotive J0927645 is a sector shaft oil seal for early Jeep CJ3, CJ5 and CJ6 models and Willys CJ-2, CJ-3, CJ-5, CJ-6 and MB vehicles from 1941 to 1961. A sector shaft seal sits where the steering gear’s sector shaft leaves the gearbox housing and keeps lubricant from leaking out along the shaft.
It is a direct fit for early Jeep CJ3, CJ5 and CJ6 models and Willys CJ-2, CJ-3, CJ-5, CJ-6 and MB vehicles.
Key features
- Designed for the steering gear sector shaft
- Direct fit for early Jeep CJ and Willys models
- Covers listed model years from 1941 to 1961
- Crown Automotive part number J0927645
Signs of a worn seal
A worn sector shaft seal usually shows up as oil on the outside of the steering gearbox, around the spot where the shaft leaves the housing. Check the gearbox after a drive and look for dark, wet residue along the lower edge and the pitman arm area. A small weep can build into a steady drip over time, and low lubricant can lead to stiff or noisy steering as the gears run dry.
Because the seal is reached by opening the gearbox, it is a good time to look at the parts around it. Inspect the sector shaft surface for scoring, since a rough shaft will wear a new seal quickly. Keep the steering gear clean while the cover is off, and refill with the lubricant grade given in the vehicle’s service information. Recheck for leaks after a few short drives before returning the vehicle to regular use.
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J0927645 |
| UPC | 848399054873 |
| Part type | Sector shaft oil seal |
| Fitment | Direct Fit |
Vehicle fitment
It fits 1959–1961 Jeep CJ3, CJ5 and CJ6 (Base), 1946–1949 Willys CJ-2, 1949–1958 Willys CJ-3, 1955–1958 Willys CJ-5 and CJ-6, and 1941–1942 Willys MB (Base).
The list does not include CJ5 or CJ7 models from the 1970s and 1980s, or any Wrangler, Cherokee or Wagoneer model. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
A sector shaft seal is reached by opening the steering gearbox, so drain and refill the lubricant to the vehicle’s specifications and inspect the shaft for wear before fitting the new seal.
What’s included
The product is a single sector shaft oil seal.




