ZF 4657.056.217 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.217 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in replacement for heavy-duty off-highway applications. This complete assembly serves as the central power distribution hub within the WG 210 series, managing torque flow from the engine to the driveline through six forward speeds and one reverse. The SKU 4657.056.217 designates a factory-matched unit that includes the main gear cluster, clutch packs, and valve body. When rebuilding a WG 210, the TRANSMISSION HOUSING provides the structural backbone, while the HOUS.FRONT SECT seals the front cover area. For rear-end integrity, the HOUSING REAR PART and the HOUSING REAR SECTION complete the enclosure.

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 in forward gears.
• Internal hydraulic pressure loss: Cracks in the housing or worn valve body bores lead to low line pressure, resulting in soft shifts and overheating.
• Metallic debris in the oil pan: Bearing spalling or gear tooth chipping produces visible contamination, often accompanied by whining or grinding noises during operation.
• External oil seepage at case joints: Gasket failure between the main housing and the HOUSING REAR PART or HOUSING REAR SECTION creates drips that worsen with temperature cycles.

Technical Specifications

Compatibility

This complete unit is engineered for the WG 210 series but also fits select variants in the WG 180, WG 200, and WG 240 families where the bell-housing pattern and input spline match. It is commonly used in ZF 6WG-210 powershift transmissions found in loaders, graders, and industrial tractors. Always verify the housing casting number against the TRANSMISSION HOUSING and the HOUS.FRONT SECT to confirm interchangeability.

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