Overview
The Omix-Ada front or rear output shaft yoke seal, part number 18670.04, is made for Model 18, Model 20 and Quadra-Trac transfer cases. It fits 1972-1979 Jeep CJ5 models, 1972-1975 CJ6 models and 1976-1979 CJ7 models.
The seal is used at the front or rear output shaft yoke, and one seal is needed per yoke. Count the yokes on your transfer case before ordering.
Key features
- Fits Model 18, Model 20 and Quadra-Trac transfer cases
- One seal needed per yoke
- Used at the front or rear output shaft
- Omix-Ada OE replacement design
Output shaft seal basics
The output shaft seal sits where the yoke passes out of the transfer case and keeps gear oil from leaking along the shaft. Seals of this type harden with heat and age, and a leak often starts as a faint film around the yoke before the fluid level drops noticeably.
Yoke seals are usually replaced with the driveshaft removed, and the yoke nut and flange should be inspected at the same time. A pitted or grooved yoke surface can cut a new seal, so smooth or replace it if the surface is damaged. Use a seal driver rather than a hammer to avoid bending the seal lip.
Check the transfer case fluid level after replacing the seal, and watch for seepage over the next few drives. Match the seal to your case type before fitting it, and keep the old seal to compare dimensions.
- Film of fluid around the yoke
- Pitted or grooved yoke surface
- Falling fluid level between services
Specifications
| Brand | Omix-Ada |
|---|---|
| Part number | 18670.04 |
| UPC | 804314040420 |
| Compatible transfer cases | Model 18, Model 20, Quadra-Trac |
| Quantity needed | One per yoke |
| Seal location | Front or rear output shaft |
Vehicle fitment
It fits 1972-1979 CJ5 (Base, Golden Eagle, Renegade), 1972-1975 CJ6 (Base) and 1976-1979 CJ7 (Base, Golden Eagle, Renegade).
The list does not cover 1980 and later CJ models. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Plan on one seal per yoke. Match the seal to the Model 18, Model 20 or Quadra-Trac case before you start.
What’s included
Plan on one seal per yoke, so count the yokes on your transfer case before starting. Check the package contents against your installation.
