Overview
The ZF 4461.161.045 DIFFERENTIAL is a critical power distribution component engineered specifically for the WG 200 Series transmission family. This OEM genuine part sits within the final drive assembly, where it transfers torque from the driveshaft to the axle shafts while allowing the wheels to rotate at different speeds during cornering. As a precision-machined differential unit, the SKU 4461.161.045 ensures smooth load sharing and reduces drivetrain stress in heavy-duty industrial applications. It is designed to withstand high torque loads and continuous operation in demanding environments such as construction, mining, and agricultural machinery.
Symptoms of Failure
- Oil leaks around the differential housing: Worn seals or gaskets on the 4461.161.045 unit can cause transmission fluid to seep out, leading to low lubricant levels and potential overheating.
- Gear slipping or clunking noises: Internal gear wear or bearing failure within the differential produces audible grinding or clunking sounds during acceleration or deceleration, indicating imminent failure.
- Uneven tire wear or vibration: A failing differential cannot properly distribute torque, causing one wheel to spin faster than the other, resulting in uneven tire wear and noticeable driveline vibration at highway speeds.
- Difficulty turning or binding: When the differential locks up or fails to differentiate, the vehicle may exhibit resistance during turns, especially on tight corners or uneven terrain.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4461.161.045 |
| OEM Reference | ZF 4461.161.045 |
| Material | Forged alloy steel with heat-treated gears |
| Weight | Approximately 18.5 kg (40.8 lbs) |
| Overall Diameter | 280 mm |
| Overall Length | 210 mm |
| Bolt Pattern | 8 x M12 on 160 mm PCD |
| Lubrication Type | SAE 80W-90 gear oil |
| Torque Capacity | Up to 4,500 Nm |
Compatibility
This ZF 4461.161.045 differential is primarily designed for the WG 200 Series transmissions, including models such as WG180, WG200, and WG210. It is also compatible with certain variants of the WG 180 Series and WG 220 Series where the differential housing and bolt pattern match. Always verify your transmission model and serial number before installation. For complete assembly, this part is installed alongside the 4460165051 CONSOLE and the 4460368311 CONSOLE, which provide structural support. Secure mounting requires the 0636011429 HEXAGON SCREW and the 0730100365 WASHER to ensure proper torque retention and vibration resistance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460165051 | CONSOLE | Mounting bracket for differential housing |
| 4460368311 | CONSOLE | Secondary support console for alignment |
| 0636011429 | HEXAGON SCREW | Fastener for differential-to-console attachment |
| 0730100365 | WASHER | Load distribution and anti-loosening washer |
| 4644105418 | DISCONNECTION | Torque disconnect mechanism for PTO |
| 4644305041 | ADAPTER | Interface between differential and axle |
| 4460068159 | AXLE DRIVE | Final drive output shaft assembly |
| 4460168651 | INPUT FLANGE | Flange connecting driveshaft to differential |
| 4460368318 | FLANGE | Output flange for axle connection |
| 4460368317 | DUST PROTECTION | Seal cover to prevent debris ingress |
