ZF 4644.152.447 CLUTCH for WG 180/WG 200 | OEM Genuine Part

Overview

The ZF 4644.152.447 CLUTCH is a critical torque-transfer component engineered for the WG 180 and WG 200 series transmissions. Positioned within the planetary gear set assembly, this OEM genuine part manages the engagement and disengagement of power flow between the engine and the drivetrain. The SKU 4644.152.447 identifies a factory-spec friction clutch designed to withstand high cyclic loads in industrial and heavy-duty applications. When installed alongside the 4644101160 TRANSMISSION HOUSING and the 4644301323 TRANSMISSION HOUSING, this clutch ensures precise hydraulic actuation and consistent torque delivery under demanding operating conditions.

Symptoms of Failure

• Delayed gear engagement or slipping under load: Worn friction surfaces in the 4644.152.447 clutch cause the transmission to hesitate or slip when shifting from neutral to drive, particularly under heavy torque.
• Erratic hydraulic pressure fluctuations: Degraded clutch seals lead to internal fluid bypass, resulting in pressure drops that manifest as harsh or unpredictable shifting patterns.
• Burning smell or darkened transmission fluid: Overheated clutch plates generate excessive friction, producing a distinct burnt odor and contaminating the oil with carbon deposits.
• Audible grinding or whining during operation: Metal-to-metal contact from worn clutch discs creates abnormal noise, often accompanied by vibration in the driveline.

Technical Specifications

Compatibility

This clutch is specifically designed for ZF WG 180 and WG 200 series transmissions, including the WG 201 variant. It is a direct replacement for units requiring the 4644.152.447 friction pack. The part integrates with the 4644301189 THREADED BUSH for secure mounting and the 4475280043 SCREW PLUG for hydraulic port sealing. Compatible models include WG180, WG200, WG201, and their off-highway derivatives used in construction, mining, and agricultural machinery.

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