Overview
The ZF 4616.305.001 OUTPUT SHAFT is a critical driveline component engineered for the WG 65 Series transmission family. This genuine OEM part transfers rotational torque from the planetary gear set to the vehicle’s drive shaft, ensuring smooth power delivery under heavy loads. Positioned at the rear of the transmission housing, the output shaft interfaces directly with the TRANSMISSION HOUSING (4616101059) and is secured by precision fasteners. The SKU 4616.305.001 guarantees exact fitment and material integrity, eliminating the risks associated with aftermarket substitutes.
Symptoms of Failure
- Transmission oil leaks at the rear seal: A worn output shaft surface or damaged splines can compromise the sealing ring, leading to visible fluid drips beneath the vehicle.
- Vibration or driveline shudder during acceleration: Excessive play in the output shaft bearing journal causes misalignment, resulting in rhythmic shaking at highway speeds.
- Gear engagement hesitation or slipping: When the shaft’s splines wear, torque transfer becomes intermittent, causing delayed shifts or unexpected neutral conditions.
- Metallic grinding noise from the transmission tail: Advanced wear on the shaft’s bearing race or spline teeth produces audible scraping sounds during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4616.305.001 |
| Overall Length | 385 mm (estimated) |
| Shaft Diameter (bearing journal) | 55 mm (estimated) |
| Spline Count | 28 involute splines (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (estimated) |
| OEM Reference | ZF 4616.305.001 (genuine) |
| Torque Capacity | 2,500 Nm (estimated for WG65) |
Compatibility
This output shaft is specifically designed for the ZF WG 65 Series transmissions, including models such as WG65, WG80, and WG100. It is also compatible with select WG180 and WG200 variants that share the same rear output architecture. Always verify the transmission serial number against the OEM parts catalog. When replacing this shaft, inspect the HEXAGON SCREW (0636011038), HEXAGON SCREW (0636011118), and HEXAGON SCREW (0636016015) for thread wear, as these fasteners secure the shaft to the output flange.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Encloses and supports the output shaft assembly |
| 0636011038 | HEXAGON SCREW | Secures output flange to shaft |
| 0636011118 | HEXAGON SCREW | Fastens bearing retainer to housing |
| 0636016015 | HEXAGON SCREW | Mounts output shaft cover plate |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals output shaft bore in housing |
| 0636304019 | SCREW PLUG | Closes oil drain port in housing |
| 0634801152 | SEALING RING | Prevents oil leakage at shaft exit |
| 0732611049 | FILTER INSERT | Traps debris in lubrication circuit |
| 0634303718 | O-RING | Seals filter housing interface |
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