ZF 4646.354.001 SHAFT for WG251 | OEM Genuine Part

Overview

The ZF 4646.354.001 SHAFT is a precision-machined internal component engineered specifically for the WG 251 series transmission. This OEM genuine part functions as the primary torque-transfer element within the gear train, connecting the input drive to the planetary gear sets. Located in the central shaft assembly, it ensures synchronized rotation and load distribution under high-stress operating conditions. The SKU 4646.354.001 is manufactured to exact ZF tolerances, guaranteeing seamless integration with the TRANSMISSION HOUSING and the HOUSING assembly.

Symptoms of Failure

• Transmission gear slipping under load: When the 4646.354.001 shaft wears, it loses its ability to maintain positive engagement, causing intermittent power loss during acceleration.
• Metallic grinding noise from the bell housing: Worn splines or bearing surfaces on the shaft produce a distinct scraping sound, especially during gear changes.
• Oil contamination with metal particles: Degradation of the shaft surface releases fine metallic debris into the transmission fluid, visible during routine drain intervals.
• Vibration at highway speeds: An unbalanced or fatigued shaft induces driveline shudder that intensifies with RPM, often misdiagnosed as a universal joint issue.

Technical Specifications

Compatibility

This shaft is a direct fit for the ZF WG 251 series transmission. It is also compatible with earlier WG180 and WG200 models that share the same spline geometry and bearing journal spacing. The 4646.354.001 replaces superseded part numbers 4646.354.000 and 4646.354.002. For proper installation, always pair this shaft with a new CAP SCREW and inspect the mating COVER for wear. Do not use this part in WG130 or WG310 series units without verifying shaft length and spline count.

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