Overview
The ZF 4642.351.042 AXLE is a critical load-bearing component engineered specifically for the WG 150 series transmission. This genuine OEM part serves as the central rotating shaft within the planetary gear set, transferring torque from the input shaft to the differential assembly while maintaining precise gear alignment under high-stress conditions. The SKU 4642.351.042 is machined from hardened alloy steel to withstand continuous heavy-duty operation in commercial vehicles and industrial machinery. When installed correctly, this axle ensures smooth power delivery and reduces vibration throughout the drivetrain. It works in concert with the TRANSMISSION HOUSING (4642101108) and the TRANSMISSION HOUSING (4642301208) to form the structural backbone of the WG150 assembly.
Symptoms of Failure
- Whining or grinding noise during gear engagement — A worn 4642.351.042 axle often produces a distinct metallic whine that increases with vehicle speed, indicating bearing surface degradation or shaft fatigue.
- Oil leaks near the axle seal area — As the axle surface wears, it damages the sealing lip, causing transmission fluid to seep past the SEALING CAP (0630361029) and accumulate on the housing exterior.
- Intermittent gear slipping under load — A fatigued axle can allow the planetary gears to shift out of alignment, resulting in momentary loss of torque transfer during acceleration or hill climbing.
- Excessive end-play in the output shaft — Measurable axial movement at the axle flange signals that the internal thrust surfaces have worn beyond tolerance, often accompanied by vibration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4642.351.042 |
| Overall Length | 385 mm (estimated) |
| Diameter (bearing journal) | 45 mm (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (estimated) |
| OEM Reference | ZF 4642.351.042 |
| Surface Hardness | 58-62 HRC |
| Thread Specification | M16 x 1.5 (for HEXAGON SCREW 0636100621) |
Compatibility
This axle is primarily designed for the ZF WG 150 series transmission, commonly found in mid-range buses, fire trucks, and construction loaders. It is also compatible with the WG 180 and WG 200 series when used with the appropriate ADAPTER (4642306254) and O-RING (0634303340). The part fits WG151, WG152, WG153, and WG154 variants. For proper identification, always cross-reference the TYPE PLATE (0730365125) on your transmission housing. The GROOVED STUD (0631311009) is also required for secure mounting in most WG150 configurations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Encloses and supports the axle assembly |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 |
| 0730365125 | TYPE PLATE | Identification label for transmission model |
| 0631311009 | GROOVED STUD | Secures axle to differential carrier |
| 4642301168 | SCREEN SHEET | Filters debris from lubrication oil |
| 4642301169 | SCREEN SHEET | Fine-mesh filter for oil return circuit |
| 0636100621 | HEXAGON SCREW | Fastens axle retaining plate |
| 0630361029 | SEALING CAP | Prevents fluid leakage at axle end |
| 4642306254 | ADAPTER | Enables cross-series axle compatibility |
| 0634303340 | O-RING | Seals adapter-to-housing interface |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
