ZF 0501.223.643 INNER CLUTCH DISK for WG65

Overview

The ZF 0501.223.643 INNER CLUTCH DISK is a critical friction component engineered for the WG65 series transmission. This OEM genuine part sits within the clutch pack assembly, where it transfers torque between rotating shafts during gear engagement. The SKU 0501.223.643 ensures precise fitment and durability under high thermal loads. When paired with a robust TRANSMISSION HOUSING, this disk maintains consistent hydraulic pressure and smooth shifting characteristics in heavy-duty applications.

Symptoms of Failure

• Delayed gear engagement or slipping under load — Worn friction material on the 0501.223.643 reduces clamping force, causing hesitation when accelerating or climbing grades.
• Burnt transmission fluid odor — Excessive heat from a failing inner clutch disk degrades the oil, producing a distinct acrid smell during operation.
• Erratic shift quality or shuddering — Uneven wear on the disk surface leads to vibration during gear changes, particularly in the WG65 series.
• Metal particles in the oil pan — Advanced wear sheds friction material and debris, which can be detected during routine fluid inspections.

Technical Specifications

Compatibility

This inner clutch disk is primarily designed for the ZF WG65 transmission series. Based on its construction and friction characteristics, it is also compatible with the WG180, WG200, and WG210 models that share the same clutch pack architecture. Always verify fitment by cross-referencing your transmission serial number with the 0501.223.643 SKU. For secure installation, use HEXAGON SCREW fasteners (0636011038) and HEXAGON SCREW (0636011118) to secure the clutch drum. The HEXAGON SCREW (0636016015) is also required for the pressure plate assembly.

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