Overview
This ZF 4656.054.124 4 WG 160 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. As the core hydraulic-mechanical assembly in the WG 160 series, it integrates the torque converter, planetary gear sets, and clutch packs into a single ready-to-install package. The SKU 4656.054.124 replaces worn or failed assemblies in wheel loaders, graders, and industrial tractors, restoring full power flow and shift quality. It sits directly between the engine flywheel housing and the final drive, making it the central power transfer component in the drivetrain.
Symptoms of Failure
- Delayed or harsh engagement when shifting from forward to reverse, often accompanied by a loud clunk, indicating worn clutch discs or seal failure inside the assembly.
- Oil leaks at the housing seam where the TRANSMISSION HOUSING meets the HOUS.FRONT SECT, causing low fluid levels and eventual gear slipping under load.
- Loss of power in higher gears (3rd and 4th) with no diagnostic codes, pointing to internal wear in the HOUSING REAR PART or HOUSING REAR SECTION that houses the output planetary.
- Whining or grinding noise from the transmission center section during neutral idle, often caused by bearing degradation within the main housing.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.054.124 |
| Assembly Type | Complete Powershift Unit (4 WG 160) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 1,600 Nm |
| OEM Reference | ZF 4 WG 160 |
Compatibility
This complete assembly is engineered for the ZF WG 160 series. It is directly compatible with the following ZF transmission models: WG 160, WG 180, and WG 200. It also fits select variants of the WG 150 and WG 220 when used with the appropriate TRANSMISSION HOUSING and adapter plates. Always verify your transmission serial number against the 4656.054.124 suffix to ensure correct gear ratio matching.
Frequently Asked Questions
Q: Can I install this 4656.054.124 assembly without replacing the housing sections?
A: Yes, but ZF recommends inspecting the HOUS.FRONT SECT and HOUSING REAR PART for cracks or warpage. If either shows wear, replace them to prevent premature failure of the new assembly.
Q: What is the typical service life of this complete unit?
A: Under normal operating conditions (non-abrasive environments, proper fluid changes), the 4656.054.124 can last 8,000–12,000 hours. Harsh duty cycles may reduce this to 5,000 hours.
Q: Does this assembly include the torque converter?
A: Yes, the 4 WG 160 complete unit includes the integrated torque converter, all clutch packs, and the main valve body. It does not include external filters or the cooler lines.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101058 | TRANSMISSION HOUSING | Main structural casing that supports all internal gears and shafts. |
| 4656201075 | HOUS.FRONT SECT | Front section housing the torque converter and input shaft. |
| 4656201079 | HOUSING REAR PART | Rear housing section covering the output planetary gear set. |
| 4656298051 | HOUSING REAR SECTION | Alternate rear housing variant for specific WG 160 builds. |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing-to-housing mating. |
| 4656301148 | FIXING PLATE | Locks the output shaft bearing in position. |
| 0636100817 | CAP SCREW | M10 bolt securing the housing flanges. |
| 4656301016 | SCREEN SHEET | Fine mesh filter for the main oil gallery. |
| 4656301017 | SCREEN SHEET | Secondary mesh filter for the lube circuit. |
| 0636100803 | CAP SCREW | M8 bolt for securing the screen sheet assembly. |
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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