Overview
The ZF 4616.303.144 OUTPUT FLANGE is a critical driveline component engineered specifically for the WG 65 Series transmission. This OEM genuine part serves as the mechanical interface between the transmission output shaft and the propeller shaft or drive axle, transferring rotational torque from the gearbox to the vehicle’s drivetrain. Constructed from high-strength forged steel, the flange ensures precise alignment and vibration-free power delivery under heavy loads. The SKU 4616.303.144 is machined to exact ZF tolerances, guaranteeing a secure fit with the 4616105415: OUTPUT shaft assembly and the 4616101094: TRANSMISSION HOUSING. This part is essential for maintaining drivetrain integrity in commercial vehicles, construction equipment, and industrial machinery.
Symptoms of Failure
- Transmission fluid leaks at the output shaft seal: A worn or cracked output flange often damages the sealing surface, leading to visible oil drips beneath the vehicle. This is a common long-tail search query for “ZF WG65 output flange oil leak.”
- Vibration or driveline shudder during acceleration: When the flange’s splines or bolt holes become worn, rotational imbalance occurs, causing noticeable shaking that worsens with speed.
- Gear slipping or delayed engagement: A loose or damaged flange can misalign the output shaft, resulting in intermittent power loss or harsh shifting. Search queries like “ZF transmission slipping after flange replacement” are typical.
- Excessive play in the output yoke: Physical inspection may reveal radial or axial movement at the flange connection, indicating spline wear or bolt fatigue.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.303.144 |
| Material | Forged alloy steel, induction-hardened |
| Overall Diameter | 180 mm (7.09 in) |
| Bolt Hole Pattern | 8 x M16 on 150 mm PCD |
| Spline Count | 24 involute splines |
| Weight | 4.2 kg (9.26 lbs) |
| OEM Reference | ZF 4616.303.144 |
| Torque Rating | 2,500 Nm max |
Compatibility
This output flange is primarily designed for the ZF WG 65 Series transmission. Based on its spline dimensions and bolt pattern, it is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. It is frequently used in off-highway trucks, wheel loaders, and agricultural tractors. For proper installation, always pair this flange with the 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW to secure the assembly to the output shaft.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Output shaft assembly |
| 4616101094 | TRANSMISSION HOUSING | Main gearbox casing |
| 0636011038 | HEXAGON SCREW | Flange mounting bolt |
| 0636011118 | HEXAGON SCREW | Flange mounting bolt |
| 0636016015 | HEXAGON SCREW | Housing fastening bolt |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel pin |
| 0634313118 | O-RING | Output shaft seal |
| 0732611049 | FILTER INSERT | Oil filter element |
| 0634303718 | O-RING | Housing gasket |
| 0636015114 | HEXAGON SCREW | Cover fastening bolt |
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