Overview
The Omix-Ada 18887.04 is a front retainer seal for the AX15 manual transmission, built to original specifications as a direct replacement. It fits the 1989 to 1999 Jeep Cherokee (XJ), the 1997 Jeep Wrangler (TJ) and the 1988 to 1995 Jeep Wrangler (YJ).
Front retainer seals sit at the front of the transmission where the input shaft passes through, so a worn or leaking seal at that spot is the job this part is made for. The 4.0L 6 cylinder engine is the application noted for this part.
Key features
- Replacement front retainer seal for the AX15 manual transmission
- Direct replacement design built to original specifications
- Designed for use with the 4.0L 6 cylinder engine
- Omix-Ada part number 18887.04 with UPC 804314032876
Checking the seal area
The front retainer seal on an AX15 sits where the input shaft passes out of the case, so it is exposed to fluid splash and heat every time the transmission runs. Over the years the seal lip can harden or pick up grooves, and the result is usually a slow weep at the front of the case. A seal that is leaking often leaves fluid on the bellhousing and underside of the transmission.
Before replacing it, clean the area thoroughly so no grit enters the new seal. Look at the input shaft for grooves or rust where the lip rides, since a damaged surface can make a new seal leak. Set the seal square and seat it evenly, and expect to refill the fluid once the work is complete.
Specifications
| Brand | Omix-Ada |
|---|---|
| Part number | 18887.04 |
| UPC | 804314032876 |
| Transmission | AX15 manual |
| Engine | 4.0L 6 cylinder |
| Fitment type | Direct fit |
Vehicle fitment
The manufacturer fitment list covers the 1989–1999 Jeep Cherokee (XJ) in the Base, Briarwood, Classic, Country, Laredo, Limited, Pioneer, SE and Sport trims, the 1997 Jeep Wrangler (TJ) Sport, and the 1988–1995 Jeep Wrangler (YJ) in the Base, Islander, Laredo, Renegade, SE and Sahara trims.
Wrangler TJ years other than 1997 are not on this list, and the Wrangler JK and LJ are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Replacing this seal involves transmission fluid and internal drivetrain parts, so plan for a fluid drain and refill.
What’s included
This part number covers the seal alone.





