ZF 4657.056.161 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.161 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in ready gearbox core designed for heavy-duty off-highway applications. This complete unit integrates the main drive train, clutch packs, and hydraulic control system within a single robust housing. As the central power transfer component, it sits between the engine and the final drive, converting torque across six forward speeds. The SKU 4657.056.161 identifies this as a factory-matching assembly for the WG 210 series, ensuring direct replacement without modification. When installing this unit, the 4657101080: TRANSMISSION HOUSING provides the structural foundation, while the 4657201167: HOUS.FRONT SECT and 4657201171: HOUSING REAR PART enclose the rotating assemblies. The 4657298103: HOUSING REAR SECTION completes the rear sealing surface, making this a fully enclosed, ready-to-run package.

Symptoms of Failure

• Delayed or harsh gear engagement: Worn clutch discs or degraded seals inside the assembly cause hesitation when shifting from neutral to drive or between forward ranges. Operators often report a noticeable “clunk” or lag of 2-3 seconds.
• Progressive oil leaks at housing joints: Cracks or fatigue in the main casing allow transmission fluid to seep from the mating surfaces. This is frequently observed around the HOUS.FRONT SECT interface, leading to low fluid levels and overheating.
• Torque converter shudder under load: Internal wear within the powershift unit causes vibration during low-speed maneuvering or when climbing grades. This symptom worsens as the assembly loses hydraulic pressure.
• Metal debris in the oil pan: Bearing or gear spalling generates metallic particles that circulate through the system. This contamination accelerates wear on the TRANSMISSION HOUSING and internal components.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 210 series powershift transmissions. It is directly compatible with the following ZF models that share the same bell housing pattern and input shaft spline count: WG 180, WG 200, and WG 210. It also fits select variants of the WG 160 series when used with the correct adapter plate. The assembly is commonly found in Case IH, New Holland, JCB, and Liebherr telehandlers, wheel loaders, and agricultural tractors built between 2005 and 2020. Always verify the serial number range on your existing unit before ordering.

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