ZF 4143.302.106 INPUT SHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.302.106 INPUT SHAFT is a critical torque-transfer component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part transmits rotational power from the engine directly into the planetary gearset, ensuring smooth engagement and reliable load distribution under high-stress conditions. As a precision-machined shaft, it interfaces directly with the 4143101032 HOUSING and the 4143301055 HOUSING to maintain correct gear alignment. The SKU 4143.302.106 is a direct OEM replacement, guaranteeing exact fitment and metallurgical consistency for industrial and commercial vehicle applications.

Symptoms of Failure

• Gear slippage under load – Worn splines on the input shaft cause intermittent power loss, especially during acceleration or hill climbs.
• Metallic grinding noises – A failing shaft produces audible chatter or grinding from the bell housing area as the shaft loses concentricity.
• Oil leaks at the front seal – Shaft wear damages the sealing surface, allowing transmission fluid to escape past the 0631329135 SPRING PIN and seal assembly.
• Vibration through the driveline – Excessive radial play in the input shaft creates harmonic vibrations felt in the chassis at specific RPM ranges.

Technical Specifications

Compatibility

This input shaft is designed for ZF’s modular WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits the HL 100 Series and HL 270 Series auxiliary gearboxes. The shaft integrates with the 4143298040 CASE assembly and supports torque ratings up to 1,300 Nm. For WG180 or WG200 variants, verify spline count and pilot bearing diameter before ordering.

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