ZF 2094.304.078 MAIN SHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2094.304.078 MAIN SHAFT is a critical rotating component engineered for the WG100, WG130, and WG131 transmission series. As the primary torque-transfer element, this OEM genuine part connects the input shaft to the output assembly, ensuring precise gear alignment and smooth power delivery. The SKU 2094.304.078 is machined from high-strength alloy steel to withstand the torsional loads and cyclic stresses found in heavy-duty industrial applications. This main shaft sits centrally within the transmission housing, interfacing directly with the TRANSMISSION HOUSING and the HOUSING assembly to maintain driveline integrity.

Symptoms of Failure

• Audible grinding or whining noise during gear engagement – Worn splines or bearing journals on the main shaft cause misalignment, producing a distinct metallic sound under load.
• Intermittent gear slipping under heavy torque – As the shaft surface wears, it loses its ability to hold gears in position, leading to unexpected disengagement during operation.
• Oil leakage around the shaft seal area – A damaged main shaft can compromise the SHAFT SEAL, allowing transmission fluid to escape and reducing lubrication efficiency.
• Vibration or shuddering during acceleration – Uneven wear on the shaft’s bearing surfaces creates rotational imbalance, felt as a persistent vibration through the drivetrain.

Technical Specifications

Compatibility

This main shaft is designed for the ZF WG100, WG130, and WG131 transmission models. It is also compatible with select variants of the WG180 and WG200 series where the shaft length and spline configuration match. Always verify the internal clearance with the HOUSING and the T 7336 L component before installation. For optimal sealing, pair this shaft with the SEALING RING and SCREW PLUG to prevent contamination.

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