Overview
The Alloy USA 21118 is a Chrysler 8.25 inch rear axle shaft with 29 splines for the driver or passenger side. It fits the 1997 and 1999-2001 Jeep Cherokee (XJ).
The shaft is made from 1541H or 4140 steel, heat treated and induction hardened, and it is up to 35% stronger than stock. It has 29 splines, so the matching differential or carrier must also be 29 spline. Identify the Chrysler 8.25 inch rear axle under the vehicle before ordering, and compare the spline count with the original shaft.
Key features
- Replacement shaft for the Chrysler 8.25 inch rear axle
- 29 spline
- Fits the driver or passenger side
- Fits 1997 and 1999-2001 Jeep XJ
- Alloy USA says its shafts are heat treated and induction hardened
- Bearings, seals and studs are not included
Identifying the 8.25 axle
Before buying an axle shaft, confirm which rear axle is under the vehicle. Chrysler 8.25 inch axles and their gear sets appear across several Jeep models, and a shaft that matches the carrier’s spline count is only useful if the housing is the right type. Look at the axle tag or the housing shape, and compare the old shaft’s length and splines against the new part.
On XJ trail rigs, the rear shafts take heavy loads when the wheels articulate. Watch for clicking on tight turns, vibration under throttle, and grease spilling from the inner seal. Fresh bearings and seals installed with the new shaft keep the hub from loosening, and checking the wheel studs during assembly prevents a separate repair later.
- Identify the axle housing before ordering
- Compare spline count with the old shaft
- Inspect the inner seal for leaks
- Replace the bearings and seals with the shaft
Specifications
The 21118 is a replacement axle shaft for the Chrysler 8.25 inch rear axle, with 29 splines. Every figure in the table below is the manufacturer value for the 21118.
| Brand | Alloy USA |
|---|---|
| Part number | 21118 |
| UPC | 804314183066 |
| Part type | Replacement axle shaft |
| Axle | Chrysler 8.25 inch rear |
| Axle shaft location | Driver or passenger side |
| Spline | 29 spline |
| Manufacturer part number | ALY21118 |
| Application stated | 97-01 Jeep XJ |
Vehicle fitment
The manufacturer fitment list for the 21118 names: 1997, 1999–2001 Jeep Cherokee (XJ).
The application is 97-01 Jeep XJ.
Before ordering the 21118, compare its spline count, side and overall length with the shaft being replaced.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Before installing the 21118, set aside bearings, seals and studs, since none come with the shaft.
What’s included
One axle shaft.
Not included: Bearings, Seals, Studs.
