ZF 4143.351.024 END SHIM | OEM Genuine Part

Overview

The ZF 4143.351.024 END SHIM is a precision-machined component designed to establish the correct axial clearance within the clutch pack and rotating assemblies of ZF heavy-duty transmissions. This OEM genuine part, identified by SKU 4143.351.024, sits between the housing and the bearing race to control end-play tolerances. Proper shimming prevents excessive movement that can lead to misalignment of the 4143101014: HOUSING and the 4143301025: HOUSING assemblies. By maintaining precise spacing, this shim ensures that hydraulic pressure is evenly distributed across the clutch discs, directly influencing shift quality and torque transfer efficiency.

Symptoms of Failure

• Erratic gear engagement or delayed shifting – When the end shim wears or compresses beyond tolerance, the clutch pack clearance increases, causing sluggish or harsh engagement during acceleration.
• Low transmission oil pressure warnings – Excessive axial play can allow the 0634313603: O-RING to lose its seal, leading to internal leakage and a drop in hydraulic circuit pressure.
• Metallic debris in the oil pan – A worn shim generates fine metal particles as it grinds against the housing, contaminating the fluid and accelerating wear on the 4475280018: SCREW PLUG sealing surfaces.
• Audible knocking or rumbling from the transmission – Loose end-play allows the shaft to oscillate, creating a distinct low-frequency noise that worsens under load.

Technical Specifications

Compatibility

This end shim is engineered for the HL 100 Series and HL 270 Series transmission families. It is also a direct fit for the WG180, WG200, and WG250 models where axial clearance adjustment is required. Additionally, it serves the Ecomat 4HP and 5HP series when used in conjunction with the correct clutch drum assembly. Always verify the shim stack height against the service manual for your specific transmission variant.

Related Components