ZF 4657.056.058 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.058 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This SKU 4657.056.058 integrates the planetary gear sets, clutch packs, and hydraulic control system into a single ready-to-install assembly. It sits at the core of the driveline, transferring engine torque through six forward speeds and one reverse speed. The assembly is precision-balanced to ensure smooth power delivery under extreme loads. For structural integrity, this unit mates directly with the 4657101034: TRANSMISSION HOUSING and the 4657201027: HOUS.FRONT SECT, which together form the rigid shell that protects internal components.

Symptoms of Failure

• Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the assembly cause delayed shifts or complete loss of drive, especially when climbing grades.
• External oil leaks at the housing seam: Cracks or gasket failure in the 4657201012: HOUSING REAR PART allow transmission fluid to escape, leading to low pressure and overheating.
• Metallic grinding noise during shifting: Damaged planetary gears or bearing failure produce a distinct grinding sound, often accompanied by vibration through the chassis.
• Delayed or harsh reverse engagement: Hydraulic valve body wear or a stuck 0631306792: CYLINDRICAL PIN can cause a lag of several seconds before reverse engages, followed by a jarring clunk.

Technical Specifications

Compatibility

This complete assembly is engineered for the ZF WG 210 series, but it also fits select models in the WG 180 and WG 200 families due to shared bellhousing patterns and spline counts. It is commonly used in ZF 6 WG 210, 6 WG 200, and 6 WG 180 transmissions found in telehandlers, wheel loaders, and industrial tractors. Always verify the input shaft configuration and clutch pack count against your original unit before installation.

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