Overview
The ZF 4642.303.095 OUTPUT SHAFT is a critical torque-transmitting component engineered specifically for the WG 150 series of heavy-duty transmissions. This OEM genuine part serves as the final mechanical interface between the transmission’s planetary gear set and the driveline flange, converting rotational energy into usable power for industrial vehicles and machinery. Precision-machined from high-grade alloy steel, the SKU 4642.303.095 ensures concentric rotation and minimal vibration under extreme loads. It sits within the rear section of the transmission housing, directly engaging with the output carrier assembly. For a complete rebuild, this shaft must be paired with a robust TRANSMISSION HOUSING (4642101109) to maintain structural integrity and proper alignment.
Symptoms of Failure
- Oil leaks near the rear seal area: A worn output shaft surface or damaged splines can degrade the lip seal, causing transmission fluid to weep from the tail housing. This is often the first visible sign of shaft fatigue.
- Driveline vibration during acceleration: When the shaft’s bearing journal wears unevenly, it induces a low-frequency shudder that intensifies under load, indicating the need for immediate replacement.
- Gear slipping or delayed engagement: Excessive play in the output shaft splines prevents the clutch packs from locking fully, leading to erratic shifting and power loss in forward or reverse gears.
- Metallic debris in the oil pan: Flaking or spalling on the shaft’s hardened surface releases ferrous particles into the lubrication system, which can damage downstream components like the VALVE HOUSING (4644306565).
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4642.303.095 |
| OEM Reference | ZF 4642.303.095 |
| Overall Length | 385 mm (estimated) |
| Outer Diameter (bearing journal) | 65 mm (estimated) |
| Spline Count | 28 involute splines |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.8 kg (10.6 lbs) |
| Surface Hardness | 58–62 HRC |
Compatibility
This output shaft is designed for the ZF WG 150 series, but its robust construction also makes it a direct fit for the WG 180 and WG 200 models when used with the correct adapter components. It is commonly found in WG 150, WG 151, WG 152, WG 180, and WG 200 transmissions used in off-highway trucks, cranes, and agricultural tractors. Always verify the spline count and pilot bearing diameter against your existing shaft. For a full transmission overhaul, consider replacing the TRANSMISSION HOUSING (4642301205) and the TYPE PLATE (0730365125) to ensure accurate identification. Additionally, secure the assembly with a new GROOVED STUD (0631311009) to prevent fastener loosening under torque.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses and supports the gear train |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Secures housing and prevents rotation |
| 4642301168 | SCREEN SHEET | Filters debris from oil flow |
| 4642301169 | SCREEN SHEET | Secondary oil filtration mesh |
| 0636100621 | HEXAGON SCREW | Fastener for valve body attachment |
| 4642301186 | SCREEN SHEET | Fine-mesh screen for hydraulic circuit |
| 4644159321 | SHIFT SYSTEM | Controls gear selection and modulation |
| 4644306565 | VALVE HOUSING | Manages hydraulic pressure distribution |
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