ZF 4143.302.101 INPUT SHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.302.101 INPUT SHAFT is a precision-machined component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part transmits torque from the engine to the gear train, serving as the primary rotational interface within the input assembly. The SKU 4143.302.101 interfaces directly with the 4143101030: HOUSING and the 4143298040: CASE, ensuring proper alignment and load distribution during operation. Constructed from case-hardened alloy steel, this input shaft resists torsional fatigue and maintains dimensional stability under high-stress conditions.

Symptoms of Failure

• Transmission gear slipping under load: A worn input shaft spline or bearing journal causes intermittent torque loss, particularly during acceleration or hill climbing.
• Oil leaks at the front seal area: Excessive radial play from a damaged shaft surface degrades the seal lip, leading to fluid seepage around the 0631329135: SPRING PIN retention point.
• Unusual whining or grinding noise: Pitting or scoring on the shaft’s bearing contact surfaces generates audible vibration that intensifies with engine RPM.
• Difficult gear engagement: A bent or twisted input shaft prevents smooth synchronization, causing harsh shifts or complete inability to select gears.

Technical Specifications

Compatibility

This input shaft is designed for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select HL 100 Series and HL 270 Series applications where the input shaft geometry matches. For WG180 or WG200 variants, verify the spline count and bearing journal dimensions before installation. The shaft works in conjunction with the 4143301055: HOUSING to maintain proper oil flow and bearing preload.

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