Overview
The 4740670 is a rear gear set for the Dana 35 differential with an open case and 27-spline axles. It is matched to casting numbers 44591 or 44650, with ratios of 3.07, 3.55, 4.11 and 4.56.
The kit is the standard version with ABS, for the rear position. It fits the 1992–2001 Jeep Cherokee (XJ), the 1992 Jeep Comanche, the 1993–1996 Jeep Grand Cherokee (ZJ), the 1997–2006 Jeep Wrangler (TJ), the 1993–1995 Jeep Wrangler (YJ) and the 2004–2006 Jeep Wrangler (LJ) Unlimited.
Key features
- Gear ratios of 3.07, 3.55, 4.11 and 4.56
- Matched to casting numbers 44591 or 44650
- Open case with 27-spline axles
- A standard version with ABS
Choosing a gear ratio
A numerically higher ratio such as 4.56 multiplies engine torque at the wheels, which helps with low-speed crawling but raises engine speed on the highway. A lower ratio such as 3.07 keeps engine speed down for steady road driving. The right choice depends on tire size, transmission gearing and how the vehicle is used most of the time.
Gear sets are normally replaced as a matched ring and pinion, because tooth contact and bearing preload depend on the pair. Check the carrier, the bearings and the pinion depth before assembly. Consider any upgraded axle shafts or locking differentials that may be installed on the vehicle, since they change how the gears are loaded.
- Match the tire diameter to the chosen ratio
- Inspect carrier bearings when the gears are replaced
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 4740670 |
| UPC | 848399007268 |
| Axle type | Dana 35 |
| Position | Rear |
| Case | Open |
| Axle spline | 27 splines |
| Gear ratios | 3.07, 3.55, 4.11, 4.56 |
| Casting numbers | 44591 or 44650 |
| Version | Standard, with ABS |
Vehicle fitment
It fits the 1992–2001 Jeep Cherokee (XJ), 1992 Jeep Comanche, 1993–1996 Jeep Grand Cherokee (ZJ), 2004–2006 Jeep Wrangler (LJ) Unlimited, 1997–2006 Jeep Wrangler (TJ) and 1993–1995 Jeep Wrangler (YJ).
The list does not include the Grand Cherokee (WJ) or the 2007–2018 Wrangler (JK).
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Gear sets like this are normally set up by a professional, including gear mesh and bearing preload. Confirm the setup steps for your vehicle before running the gears under load.
What’s included
One gear set, part number 4740670. Check the package contents against your installation before starting.
