ZF 4143.352.029 OUTER CLUTCH DISK for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.352.029 OUTER CLUTCH DISK is a critical friction component engineered for the HL 100 and HL 270 series transmissions. Positioned within the clutch pack assembly, this OEM genuine part transfers torque from the driving hub to the housing during gear engagement. The SKU 4143.352.029 serves as the outermost steel reaction plate, providing the necessary clamping surface for the friction discs. Without this disk, the clutch pack cannot build hydraulic pressure, resulting in complete torque loss. It works in concert with the 4143101016: HOUSING and the 4143301039: HOUSING to contain the rotating assembly.

Symptoms of Failure

• Delayed gear engagement or “slipping clutch”: When the outer clutch disk wears thin, the transmission hesitates before engaging forward or reverse gears, especially under load.
• Burnt transmission fluid odor: Excessive friction from a warped or glazed 4143.352.029 disk generates heat, causing the ATF to smell acrid and turn dark brown.
• Erratic shifting and shuddering: A scored outer disk prevents smooth pressure modulation, leading to harsh upshifts or a vibration during acceleration.
• Metallic debris in the oil pan: Worn steel particles from the disk surface contaminate the hydraulic circuit, often clogging the 4143201019: VALVE INSERT.

Technical Specifications

Compatibility

This outer clutch disk is designed for ZF HL 100 and HL 270 series transmissions. It also fits the following ZF models that share the same clutch pack architecture: WG180, WG200, WG210, WG220, and WG250. Always verify the spline count and stack height when replacing. The disk seats against the 0636101084: CAP SCREW and requires a fresh 0501318136: GASKET during reassembly to prevent fluid bypass.

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