Overview
The Omix-ADA 16530.29 is an AMC Model 20 wide track rear axle shaft for the driver side, with 29 splines and 28.5 inch overall length, for 1982–1986 Jeep CJ7 and 1982–1985 Scrambler models.
A broken rear shaft on a wide track CJ7 or Scrambler can be replaced with this left-side shaft. Omix-ADA builds its line as direct OE replacement parts to original specifications, with a limited five year warranty. The shaft fits the AMC 20 rear axle in the rear left position.
The AMC 20 is the rear axle used under CJ7 and Scrambler models, and the WideTrac version is the later, wider design. This driver side shaft measures 28.5 inch overall and has 29 splines. Replacing a shaft with one of the correct length and spline count matters more than almost anything else on this job. Omix-ADA gives no material or strength details, so this is a like-for-like replacement rather than an upgrade, matching the stock part for the period vehicles on the list.
Key features
- AMC Model 20 rear axle shaft
- Driver side, rear left position
- 29 splines
- 28.5 inch overall length
- WideTrac application
- Direct fit
Measuring before you install
A wide track AMC 20 shaft has to match the axle’s spline count and overall length, so measuring the old shaft first avoids a wasted trip under the truck. Measure from the flange face to the end of the shaft, and compare the spline count before you order. Narrow and wide track parts differ in length, so a mismatch will not seat correctly.
On a WideTrac CJ7 or Scrambler used off road, the spline end and retainer are worth a close look during the swap. Check the bearing and seal at the axle end, and clean the housing before fitting so the new shaft seats fully. Keep the backing plate and drum surfaces clear of old gasket residue so the wheel runs true.
Specifications
| Brand | Omix-Ada |
|---|---|
| Part number | 16530.29 |
| UPC | 804314047511 |
| Part type | Rear axle shaft |
| Axle | AMC 20 |
| Axle location | Rear |
| Position | Driver side, rear left |
| Spline count | 29 splines |
| Overall length | 28.5 inch |
| Track width | Wide |
| Fit type | Direct fit |
Vehicle fitment
It fits the 1982–1986 Jeep CJ7 and the 1982–1985 Jeep Scrambler.
The CJ5, narrow track CJs and Wranglers are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Measure your old shaft against 28.5 inch before replacing it, because narrow and wide track CJs use different lengths.







