Overview
The Alloy USA 21127 is a driver side rear axle shaft for the Dana 35, with 27 splines, for the 1999–2004 Jeep Grand Cherokee (WJ) in Laredo, Limited, Overland, Special Edition and Sport trim.
The shaft is made from 1541H or 4140 steel, depending on the application. Alloy USA says each shaft is heat-treated and induction hardened to about twice the tensile strength of stock, and up to 35% stronger.
Key features
- Driver side rear position
- Dana 35 axle type with 27 splines
- 1541H or 4140 steel, depending on application
- Heat-treated and induction hardened
Rear axle shaft replacement
Rear axle shafts carry torque from the differential to the wheel hub, and they are subject to twisting loads when the wheel grips or hits an obstacle. A worn or bent shaft can cause vibration, clunking on acceleration or a wheel that wobbles at low speed. Before installing a replacement, inspect the hub, bearing and spline ends on the stock axle for wear that would affect the new shaft.
Driver side and passenger side shafts are not interchangeable, so confirm the position matches before bolting anything in. Replacing the bearings, seals and studs at the same time saves a second teardown later. Keep the axle oil at the correct level and check for leaks around the axle seal after the first few drives.
Specifications
| Brand | Alloy USA |
|---|---|
| Part number | 21127 |
| Axle maker | Dana |
| Axle location | Rear |
| Position | Rear left, driver side |
| Axle type | Dana 35 |
| Axle spline | 27 splines |
| Steel | 1541H or 4140 |
Vehicle fitment
It fits the 1999–2004 Jeep Grand Cherokee (WJ) in Laredo, Limited, Overland, Special Edition and Sport trim.
Its fitment covers the 1999–2004 Grand Cherokee model years.
Confirm the side matches the axle before fitting: this is the driver side rear left shaft.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Bearings, seals and studs are not included, so they need to come from the stock axle or from elsewhere.
What’s included
One driver side rear axle shaft.
Not included: Bearings, seals and studs.
