ZF 4657.056.131 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.131 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in ready gearbox designed for heavy-duty industrial applications. This complete unit integrates the main drive housing, clutch packs, and hydraulic control system into a single, pre-tested assembly. As the core of the WG 210 series, it manages torque distribution across six forward speeds. The SKU 4657.056.131 replaces worn or failed transmissions in material handlers, wheel loaders, and forklifts. For a full rebuild, this unit must be paired with a sound TRANSMISSION HOUSING to ensure proper alignment of internal components.

Symptoms of Failure

• Erratic gear engagement or slipping under load: Worn clutch discs or hydraulic seal failure inside the assembly cause the transmission to slip when shifting from forward to reverse, especially under heavy torque.
• External oil leaks at the bell housing: Cracks or gasket degradation in the HOUS.FRONT SECT allow transmission fluid to weep, leading to low pressure and eventual overheating.
• Delayed or harsh shifting: Contaminated valve bodies or worn planetary gearsets produce a noticeable lag or clunk when engaging drive, often accompanied by metallic grinding noises.
• Overheating during continuous operation: A failing torque converter or blocked oil passages cause the unit to run hot, triggering warning lights on the equipment dashboard.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 210 series. It is directly compatible with the following transmission models: WG 180, WG 200, WG 210, and WG 250 series when used with the correct bell housing adapter. The assembly integrates with the HOUSING REAR PART and the HOUSING REAR SECTION to complete the drivetrain enclosure. Always verify the flange pattern and input shaft spline count before installation.

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