ZF 2095.103.023 COUNTERSHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2095.103.023 COUNTERSHAFT is a critical rotating component within the ZF WG100, WG130, and WG131 transmission assemblies. This OEM genuine part transmits torque from the input shaft to the output gears, ensuring smooth power flow through the gear train. As a central shaft, it supports multiple gear clusters and must maintain precise alignment to prevent drivetrain vibration. The SKU 2095.103.023 is engineered to OEM tolerances for direct replacement in heavy-duty industrial applications. This countershaft works in concert with the 2095109020 DIFFERENTIAL to manage load distribution within the axle assembly.

Symptoms of Failure

• Gear grinding or whining noise during acceleration: Worn countershaft splines or bearing journals cause misalignment, producing a distinct metallic whine that intensifies under load.
• Intermittent gear slipping under heavy torque: When the countershaft surface wears, gear engagement becomes inconsistent, leading to sudden power loss during uphill climbs or loaded starts.
• Oil leaks near the transmission housing seal: A damaged countershaft can distort the seal surface, allowing transmission fluid to weep from the shaft exit point.
• Vibration through the gearshift lever: Excessive radial play in the countershaft creates harmonic vibrations felt directly in the operator cab during normal operation.

Technical Specifications

Compatibility

This 2095.103.023 COUNTERSHAFT is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with certain variants of the WG180 and WG200 series where the countershaft length and spline count match. Always verify the 0750117075 TAPER ROLLER BEARING condition during replacement, as bearing wear accelerates countershaft failure. The countershaft interfaces directly with the 2095209037 DIFFERENTIAL and the 2095309059 DIFF.HOUSING in the final drive assembly.

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