ZF 4644.151.402 CLUTCH for WG 180/WG 200 | OEM Genuine Part

Overview

The ZF 4644.151.402 CLUTCH is a critical torque-transfer component engineered for the WG 180 and WG 200 series transmissions. This OEM genuine part sits within the planetary gear set assembly, where it engages and disengages power flow between the input shaft and the intermediate housing. The SKU 4644.151.402 is precision-machined to ZF’s original tolerances, ensuring consistent hydraulic pressure application and smooth gear engagement. When installed alongside the 4644101160 TRANSMISSION HOUSING and the 4644301323 TRANSMISSION HOUSING, this clutch forms the backbone of the transmission’s load-bearing structure.

Symptoms of Failure

• Delayed or harsh engagement – When the clutch pack wears, you may notice a pronounced lag or a jarring shift when moving from neutral to drive or reverse, especially under load.
• Intermittent gear slipping under torque – A failing 4644.151.402 clutch often causes the transmission to momentarily lose power during acceleration, with engine RPM rising faster than vehicle speed.
• Contaminated transmission fluid with metallic debris – Worn friction material from the clutch disc will appear as dark, gritty particles in the oil, often accompanied by a burnt smell.
• Oil leaks near the clutch drum seal – Deterioration of the internal seals can cause fluid to weep from the bell housing area, leading to low pressure and eventual transmission failure.

Technical Specifications

Compatibility

This clutch is specifically designed for the ZF WG 180 and WG 200 transmission families, including the WG 201 Series. It is a direct replacement for units in WG180, WG200, and WG201 gearboxes used in off-highway vehicles, construction equipment, and heavy-duty trucks. The 4644.151.402 clutch interfaces directly with the 4644301189 THREADED BUSH and the 4475280043 SCREW PLUG to secure the clutch pack within the drum. Always verify your transmission serial number before ordering.

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