ZF 4143.301.046 WASHER for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.301.046 WASHER is a precision-engineered shim component designed for the HL 100 and HL 270 series transmissions. This OEM genuine part functions as a critical load-distributing element within the planetary gear assembly, ensuring correct axial clearance between rotating components. The SKU 4143.301.046 sits specifically between the sun gear and the 4143101022 HOUSING, preventing metal-on-metal contact during high-torque operations. Without this washer, the transmission’s internal clearances would deviate from factory specifications, leading to premature wear of adjacent bearings and gears.

Symptoms of Failure

• Oil leaks near the HL 270 bell housing – A worn 4143.301.046 washer allows the shaft to shift, breaking the seal between the 4143301044 HOUSING and the output flange.
• Gear slipping under load in HL 100 series – Excessive axial play from a degraded washer causes the clutch pack to lose clamping force during acceleration.
• Metallic grinding noise during shifting – The washer’s reduced thickness permits gear teeth to contact the housing, creating audible friction.
• Vibration at highway speeds – Uneven washer wear disrupts the balance of the rotating assembly, transmitting tremors through the driveline.

Technical Specifications

Compatibility

This washer is engineered for ZF HL 100 and HL 270 series transmissions, which are commonly found in medium-duty trucks and construction equipment. It also fits the WG180, WG200, and WG250 models when used in conjunction with the 0631329135 SPRING PIN for alignment. The part is interchangeable with earlier HL 90 series variants, provided the 0636302014 SCREW PLUG is torqued to 45 Nm during reassembly. Always verify clearance after installation using a feeler gauge.

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