ZF 4143.251.005 INNER CLUTCH DISK for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.251.005 INNER CLUTCH DISK is a critical friction component engineered for the HL 100 and HL 270 series transmissions. This OEM genuine part sits within the clutch pack assembly, where it transfers torque between rotating shafts under hydraulic pressure. Designed to withstand high thermal loads and continuous engagement cycles, the 4143.251.005 ensures smooth power delivery and precise gear selection. When installed alongside the 4143101016 HOUSING and 4143301039 HOUSING, this inner disk forms the core of the clutch coupling system. The SKU 4143.251.005 is a direct replacement for the original factory part, guaranteeing exact fitment and durability.

Symptoms of Failure

• Delayed gear engagement or slipping under load: Worn friction material on the inner clutch disk reduces clamping force, causing the transmission to hesitate or slip when accelerating.
• Erratic shifting and shuddering: As the disk surface degrades, you may experience harsh or jerky gear changes, particularly during low-speed maneuvers.
• Overheating and burnt transmission fluid smell: Excessive friction from a failing disk generates heat, leading to fluid breakdown and a distinct burnt odor.
• Metallic debris in the oil pan: Advanced wear produces fine metal particles, often visible during routine oil changes or filter inspections.

Technical Specifications

Compatibility

This inner clutch disk is designed for ZF HL 100 and HL 270 series transmissions. It is also compatible with the following ZF models that share the same clutch pack architecture: WG180, WG200, WG210, and WG250. Always verify the clutch pack stack height and confirm that the 0501318136 GASKET and 0636101084 CAP SCREW are replaced during installation to prevent fluid leaks and ensure proper torque retention.

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