Overview
The ZF 4644.103.463 OUTPUT for WG200 is a critical OEM genuine component responsible for transferring rotational force from the transmission’s planetary gear set to the driveline. Positioned at the rear of the gearbox housing, this output shaft assembly ensures smooth torque delivery under heavy loads. The SKU 4644.103.463 is precision-machined to ZF’s original tolerances, making it a direct replacement for worn units in the WG 200 Series. When paired with a new 4644105423: DISCONNECTION and a properly torqued 0636021010: HEXAGON SCREW, this part restores full power transmission integrity.
Symptoms of Failure
- Oil seepage at the rear seal area — A worn output shaft can compromise the sealing surface, leading to gradual fluid loss and potential overheating.
- Vibration during gear engagement — Excessive play in the output splines causes driveline shudder, especially under acceleration or load.
- Intermittent gear slipping — When the output shaft cannot maintain positive engagement with the 4644303054: OUTPUT FLANGE, torque delivery becomes erratic.
- Metallic debris in transmission fluid — Fretting wear on the shaft journals generates fine metal particles, indicating imminent failure.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4644.103.463 |
| Overall Length | 385 mm (approx.) |
| Shaft Diameter (bearing journal) | 45 mm |
| Spline Count | 24-tooth involute |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 4.2 kg (9.3 lbs) |
| Surface Finish | Ground & nitrided |
Compatibility
This output shaft is engineered primarily for the ZF WG 200 Series transmissions, including models WG180, WG200, and WG210. It also fits select variants of the ZF Ecomat 4HP and 5HP series where the output geometry matches. Always verify the spline interface with your existing 4644101231: TRANSMISSION HOUSING before installation. For heavy-duty off-highway applications, confirm compatibility with the shift system adapter plate.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105423 | DISCONNECTION | Engages/disengages output shaft from driveline |
| 4644303054 | OUTPUT FLANGE | Connects shaft to propeller shaft yoke |
| 0636021010 | HEXAGON SCREW | Secures output flange to shaft |
| 4644101231 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301305 | HOUSING | Rear bearing support housing |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 0631311009 | GROOVED STUD | Alignment dowel for housing assembly |
| 4475280078 | ADAPTER | Interface plate for PTO or retarder |
| 4644106301 | SHIFT SYSTEM | Hydraulic valve body for gear selection |
| 4644306507 | COVER PLATE | Seals rear access opening |
