ZF 4143.302.104 INPUT SHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.302.104 INPUT SHAFT is a critical torque-transfer component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part transmits rotational force from the engine clutch directly into the gear train, ensuring precise power delivery under heavy-duty industrial loads. The SKU 4143.302.104 is precision-machined to interface seamlessly with the 4143101031 HOUSING and the 4143298040 CASE, forming the primary input assembly. Without this shaft, the transmission cannot engage forward or reverse gears, making it a foundational element in your drivetrain rebuild.

Symptoms of Failure

• Gear engagement hesitation or grinding — A worn input shaft spline or bearing surface causes delayed clutch pack engagement, especially noticeable when shifting from neutral to drive under load.
• Transmission oil leaks at the bell housing — Degraded sealing surfaces on the shaft allow ATF to weep past the 0634303266 O-RING, leaving puddles under the vehicle after shutdown.
• Vibration during acceleration — A bent or cracked input shaft produces rhythmic driveline shudder at specific RPM ranges, often misdiagnosed as a clutch issue.
• Metal debris in the oil pan — Flaking from the shaft’s hardened surface contaminates the hydraulic circuit, accelerating wear on the 4143301055 HOUSING and valve body components.

Technical Specifications

Compatibility

This input shaft is designed for ZF industrial transmissions in the WG series. Confirmed fitment includes WG100, WG130, and WG131 models. It also serves as a direct replacement in HL 100 Series and HL 270 Series transfer cases where the input shaft interfaces with the 0631329135 SPRING PIN for gear retention. For WG180 or WG200 applications, verify shaft length and spline count against your existing unit before ordering.

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