ZF 4143.302.108 INPUT SHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.302.108 INPUT SHAFT is a precision-machined component designed for the WG100, WG130, and WG131 transmission series. This OEM genuine part transmits torque from the engine directly into the gearset, serving as the primary rotational interface within the HL 100 and HL 270 series assemblies. The SKU 4143.302.108 is manufactured to exacting ZF tolerances, ensuring minimal runout and optimal load distribution during high-torque operations. When installed, this shaft interfaces with the 4143101031: HOUSING and the 4143301055: HOUSING, forming the core structural assembly that supports planetary gear sets and clutch packs.

Symptoms of Failure

• Gear slipping under load: Worn splines on the 4143.302.108 cause intermittent torque transfer, leading to unexpected gear disengagement during acceleration.
• Metallic grinding noise from the bell housing: Bearing journal wear on the input shaft produces a distinct scraping sound, especially when shifting from neutral to drive.
• Transmission fluid contamination with metal particles: Surface spalling on the shaft deposits ferrous debris into the oil, often visible during routine drain intervals.
• Hard shifting or delayed engagement: A damaged input shaft creates misalignment with the 0631329135: SPRING PIN, causing hesitation when selecting forward or reverse gears.

Technical Specifications

Compatibility

This input shaft is engineered for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select HL 100 and HL 270 series units where the input shaft length and spline count match. The 4143.302.108 is not compatible with WG180 or WG200 series transmissions without modification to the 4143298040: CASE. For proper installation, always verify the bearing bore dimensions against your transmission’s front housing.

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