Overview
The ZF 4461.173.058 DIFFERENTIAL is a critical torque-distributing component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part transfers engine power from the driveshaft to the axle shafts, allowing the left and right wheels to rotate at different speeds during turns. Positioned directly between the main transmission housing and the axle housing, the SKU 4461.173.058 ensures smooth power delivery under extreme loads. It works in concert with the 4143101009: HOUSING and the 4143301025: HOUSING to maintain structural integrity and precise gear alignment within the drivetrain.
Symptoms of Failure
- Whining or howling noise during turns: Worn differential gears produce a distinct metallic whine, especially when cornering under load. This indicates excessive backlash or pitting on the gear teeth.
- Oil leaks around the axle housing: A failing differential often causes gear oil to seep past the seals. If you notice fluid pooling near the 0634313603: O-RING interface, the differential housing may be compromised.
- Vibration or shuddering on acceleration: Damaged spider gears or a worn carrier bearing create noticeable driveline vibration that intensifies with speed.
- Intermittent loss of traction: A seized or broken differential pinion can cause one wheel to spin freely while the other receives no power, mimicking a clutch failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4461.173.058 |
| OEM Reference | ZF 4461.173.058 |
| Material | Case-hardened alloy steel (carburized) |
| Weight | 18.5 kg (40.8 lbs) |
| Outer Diameter | 245 mm |
| Overall Length | 320 mm |
| Bolt Circle Diameter | 210 mm |
| Gear Ratio | 3.73:1 (standard) |
| Seal Surface Finish | Ra 0.4 µm |
Compatibility
This differential is designed for ZF WG-series powershift transmissions commonly used in wheel loaders, graders, and telehandlers. It directly fits the ZF WG180 and ZF WG200 transmission models. It is also compatible with the ZF WG150 and ZF WG310 series when used with the correct adapter housing. Always verify the spline count and axle flange pattern before installation. The 4475280018: SCREW PLUG must be torqued to specification to prevent lubricant loss during operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the differential carrier assembly |
| 4143301025 | HOUSING | Opposite-side housing for axle mounting |
| 0634313603 | O-RING | Seals the housing-to-differential joint |
| 4475280018 | SCREW PLUG | Locks the differential pinion shaft |
| 0501342341 | SUPPORT RING | Prevents axial movement of the carrier |
| 4143298457 | SEAL KIT | Contains all gaskets and seals for rebuild |
| 0634313591 | O-RING | Seals the input shaft connection |
| 0636101068 | CAP SCREW | Fastens the differential cover |
| 4143221013 | THROTTLE VALVE | Controls hydraulic pressure to the clutch pack |
| 0634304484 | O-RING | Seals the throttle valve bore |
