Overview
The ZF 4616.104.003 DIFFERENTIAL is a critical internal component engineered specifically for the WG 65 Series transmission family. This genuine OEM part manages torque distribution between the drive wheels, ensuring smooth power delivery and preventing driveline binding during turns. Positioned within the rear axle housing of the transmission assembly, the differential works in concert with the 4616105413: OUTPUT to transfer rotational force from the gearbox to the wheels. The SKU 4616.104.003 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or failed units in heavy-duty industrial applications.
Symptoms of Failure
- Whining or howling noise from the differential during acceleration or deceleration: This often indicates worn gear teeth or damaged bearings inside the 4616.104.003 unit, a common long-tail search query for “ZF differential noise WG65.”
- Oil leaks around the axle housing or differential cover: When the differential seals degrade, transmission fluid can escape, leading to low lubrication levels and potential overheating. Search terms like “ZF differential oil leak repair” frequently point to this part.
- Vibration or shuddering when turning at low speeds: A failing differential may cause uneven torque distribution, resulting in noticeable chassis vibration. This symptom is often searched as “differential shudder on ZF transmission.”
- Difficulty engaging or maintaining drive in forward gears: If the differential’s internal components are excessively worn, the transmission may struggle to hold power, causing slipping or hesitation.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4616.104.003 |
| OEM Reference | ZF 4616.104.003 |
| Material | Forged alloy steel with heat-treated gear surfaces |
| Weight | Approximately 8.5 kg (18.7 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 150 mm |
| Compatible Transmission Series | WG 65 |
| Torque Capacity | Up to 650 Nm |
Compatibility
This differential is designed primarily for the ZF WG 65 Series transmission. Based on its construction and part number range, it may also be compatible with the WG 180 and WG 200 models in certain configurations, though verification of the specific transmission housing is recommended. The differential integrates directly with the 4616203017: OUTPUT FLANGE and is secured within the 4616101117: TRANSMISSION HOUSING using 0636011038: HEXAGON SCREW fasteners. Always confirm fitment with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers rotational force from differential to driveshaft |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101117 | TRANSMISSION HOUSING | Encloses and protects internal gear components |
| 0636011038 | HEXAGON SCREW | Secures differential to housing |
| 0636016015 | HEXAGON SCREW | Fastener for output flange assembly |
| 0631306085 | CYLINDRICAL PIN | Alignment pin for differential positioning |
| 0634313118 | O-RING | Seals differential cover to prevent oil leaks |
| 0732611049 | FILTER INSERT | Filters transmission fluid for differential lubrication |
| 0634303718 | O-RING | Seals output flange connection |
| 0636610082 | STUD | Mounting stud for transmission housing |
