Overview
G2 Axle and Gear’s CORE 44 rear axle assembly C4TSR488AC0 combines a 4.88 gear ratio with an ARB Air Locker. G2 names it for 1997-2006 Jeep TJ and LJ Wranglers and presents the housing as a stronger option than a stock Dana 30 or Rubicon Dana 44.
A high pinion gear layout is the center of the design, with 30-spline axle shafts and a 5 on 4.5-inch wheel bolt pattern. The housing takes stock Dana 44 ring and pinion sets and axle shafts, and the brakes are the factory units, reused.
Key features
- 4.88 gear ratio
- ARB Air Locker traction device
- High pinion Dana 44 gear design
- Accepts stock Dana 44 ring and pinions and axle shafts
- 5 on 4.5-inch wheel bolt pattern
- Reuses factory brakes
Air locker and gearing tradeoffs
An air locker is engaged by compressed air rather than an electric motor, so its performance depends on a steady air supply. Owners who use one should plan for a compressor or air tank, air lines routed away from heat and moving parts, and a valve or switch that holds its position. When the locker is off, the axle behaves like an open differential.
A 4.88 ratio gives strong low-speed pulling at the cost of higher engine speed on the highway. Bigger tires change the effective ratio, which is worth weighing before the axle is installed. Because the housing takes stock Dana 44 ring and pinions, the gear set can be chosen to suit the tire and driving plan.
- Check air lines and fittings for leaks regularly
- Plan a compressor or air tank before installation
- Consider tire diameter when choosing the ratio
- Inspect the stock gear set before reusing it
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Part number | C4TSR488AC0 |
| UPC | 631410133660 |
| Housing type | 97-06 Jeep TJ Dana 44 |
| Position | Rear |
| Gear ratio | 4.88 |
| Axle spline | 30 splines |
| Wheel bolt pattern | 5 on 4.5 inches |
| Traction device | ARB Air Locker |
| Brakes | Reuse factory |
| Fitment | Direct fit |
Vehicle fitment
It fits 1997-2006 Jeep TJ and LJ Wranglers: Wrangler (TJ) 1997-2006 and Wrangler (LJ) 2004-2006.
Coverage is limited to those Jeep TJ and LJ Wrangler years and models. Match your vehicle’s year, model and trim to the listed range before ordering.
What’s included
The assembly is a complete rear axle with a 4.88 ratio and ARB Air Locker.
Not included: Ring and pinion sets and axle shafts are not part of the assembly; the housing accepts stock Dana 44 parts.
