Overview
The ZF 4642.054.058 4 WG 150 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. As a core component of the WG 150 series, it manages power distribution from the engine to the driveline, enabling smooth directional shifts and speed changes under load. The SKU 4642.054.058 is the definitive reference for this complete assembly, ensuring you receive the exact OEM-spec unit for your rebuild or replacement project.
Symptoms of Failure
When the ZF 4642.054.058 assembly begins to fail, operators typically notice one or more of the following issues. Delayed or harsh engagement when shifting from forward to reverse indicates internal clutch pack wear or hydraulic pressure loss. Transmission overheating under normal load often points to a failing torque converter or blocked oil passages within the assembly. Intermittent gear slipping during uphill operation suggests worn planetary gears or a failing shift valve body. External oil leaks around the bell housing or PTO cover are common as seals and gaskets age, leading to low fluid levels and eventual transmission failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Assembly Type | Complete Powershift Transmission (4 WG 150) |
| OEM Reference | ZF 4642.054.058 |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 820 mm |
| Overall Width | 560 mm |
| Overall Height | 610 mm |
| Housing Material | High-strength cast iron |
| Torque Converter Type | Single-stage, multi-element |
| Number of Speeds | 4 forward / 4 reverse |
| Max Input Torque | 1,500 Nm |
| Mounting Configuration | SAE 3 bell housing |
Compatibility
This complete unit is engineered for the ZF WG 150 series, but its internal components and hydraulic architecture are shared across several larger ZF powershift models. It is directly compatible with the WG 180 and WG 200 series transmissions when used as a direct replacement for the main assembly. Additionally, the 4642.054.058 can be adapted for use in WG 120 and WG 250 series units with minor modifications to the shift system. Always verify your transmission’s serial number against the ZF parts catalog to confirm fitment.
During installation, several companion parts must be inspected and replaced to ensure a leak-free, reliable assembly. The TRANSMISSION HOUSING (4642101047) provides the structural base for the entire unit, while the TRANSMISSION HOUSING (4642301207) serves as the rear cover for the clutch pack section. Do not reuse the old TYPE PLATE (0730365067); always install a new one to maintain proper identification. Finally, secure the assembly with the GROOVED STUD (0631311009) to prevent fastener loosening under vibration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Main structural housing for gear train |
| 4642301207 | TRANSMISSION HOUSING | Rear cover housing for clutch pack |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Fastener for housing alignment and retention |
| 4642301168 | SCREEN SHEET | Oil filter screen for hydraulic circuit |
| 4642301169 | SCREEN SHEET | Secondary oil filter screen |
| 0636100621 | HEXAGON SCREW | Mounting bolt for housing sections |
| 4642301186 | SCREEN SHEET | Fine mesh screen for valve body |
| 4644106319 | SHIFT SYSTEM | Hydraulic shift control assembly |
| 4644159356 | SHIFT SYSTEM | Electronic shift actuator module |
