ZF 4644.311.078 INTERMEDIATE SHAFT for WG181 | OEM Genuine Part

Overview

The ZF 4644.311.078 INTERMEDIATE SHAFT is a critical load-bearing component within the WG181 series transmission, specifically designed to transfer torque between the input and output shafts. This OEM genuine part ensures precise gear alignment and smooth power distribution under heavy-duty conditions. The SKU 4644.311.078 is engineered to withstand high torsional stress while maintaining minimal vibration, directly supporting the TRANSMISSION HOUSING and HOUSING assembly. Without this shaft, the transmission cannot maintain proper gear mesh, leading to operational failure.

Symptoms of Failure

• Gear grinding or slipping under load: Worn splines on the intermediate shaft cause erratic engagement, especially during acceleration or hill climbs.
• Metallic rattling from the transmission case: Excessive axial play in the shaft produces a distinct knocking sound, often misdiagnosed as bearing failure.
• Oil contamination with metallic debris: Flaking from the shaft surface mixes with transmission fluid, visible during routine drain intervals.
• Hard shifting or gear lockout: Misalignment forces the THREADED BUSH to bind, making gear selection difficult or impossible.

Technical Specifications

Compatibility

This intermediate shaft is primarily designed for the ZF WG 181 series, but it also fits select models in the WG180 and WG200 families due to shared spline geometry and bearing spacing. It is not compatible with WG150 or WG250 series without modification. Always verify the TYPE PLATE on your transmission housing to confirm serial number alignment before installation.

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