Overview
The ZF 4616.103.057 OUTPUT for WG65 is a critical driveline component engineered for the WG 65 Series transmission family. This OEM genuine part serves as the primary power take-off interface, transferring rotational force from the transmission’s planetary gearset to the output shaft. Positioned at the rear of the transmission housing, it ensures precise torque delivery and alignment under heavy-duty industrial loads. The SKU 4616.103.057 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life. For optimal assembly integrity, this output component is frequently installed alongside the 4616000220: 4 WG 65 mounting kit and the 4616101101: TRANSMISSION HOUSING, which provides the structural enclosure for the entire gear train.
Symptoms of Failure
When the 4616.103.057 OUTPUT begins to degrade, operators may notice distinct performance issues. Oil leaks around the output flange are a common early indicator, often caused by seal wear at the shaft interface. Gear slipping under load—particularly during acceleration or uphill travel—signals that the output splines have worn, reducing torque transfer efficiency. Unusual vibration or whining noises from the transmission rear section typically point to bearing play within the output assembly. Finally, difficulty engaging or disengaging the PTO can occur if the output shaft’s alignment shifts due to fatigue. Addressing these symptoms promptly with a genuine replacement prevents cascading damage to the 4616301304: HOUSING and other internal components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.103.057 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Weight | 2.85 kg (6.28 lbs) |
| Overall Length | 215 mm |
| Flange Diameter | 120 mm |
| Spline Count | 14-tooth involute (DIN 5480) |
| Surface Finish | Black oxide corrosion-resistant coating |
| OEM Reference | ZF 4616.103.057 |
| Torque Capacity | 1,200 Nm (885 lb-ft) |
Compatibility
This output component is specifically designed for the ZF WG 65 Series transmissions, which are widely used in municipal trucks, fire apparatus, and heavy construction equipment. It directly replaces the original part in the following ZF models: WG65, WG80, WG100, WG120, WG150, WG180, and WG200 series. The 4616.103.057 is also compatible with select Voith DIWA hybrid variants that share the WG65 output interface. For complete installation, ensure the 0636011118: HEXAGON SCREW fasteners are torqued to ZF specifications, and verify that the TRANSMISSION HOUSING is free of cracks or wear before reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616000220 | 4 WG 65 | Mounting kit for output assembly |
| 4616101101 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011118 | HEXAGON SCREW | Fastener for output flange retention |
| 4616301304 | HOUSING | Rear housing section for output shaft |
| 4616301309 | HOUSING | Alternative housing variant for WG65 |
| 0630361069 | SEALING CAP | Protective cap for output port |
| 0636011038 | HEXAGON SCREW | Bolt for housing attachment |
| 0636016015 | HEXAGON SCREW | High-torque fastener for output flange |
| 0631306085 | CYLINDRICAL PIN | Alignment pin for housing doweling |
| 0634313118 | O-RING | Seal between output and housing |
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