ZF 4646.354.010 SHAFT for WG251 | OEM Genuine Part

Overview

The ZF 4646.354.010 SHAFT is a precision-machined component engineered specifically for the WG 251 series of heavy-duty transmissions. This OEM genuine part functions as the primary torque transfer element within the planetary gear set, ensuring smooth power delivery from the engine to the driveline. Positioned between the input housing and the clutch assembly, the shaft interfaces directly with the TRANSMISSION HOUSING and the HOUSING to maintain concentric alignment under extreme loads. The SKU 4646.354.010 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification.

Symptoms of Failure

• Transmission gear slipping under load – A worn shaft can cause intermittent disengagement of gear sets, leading to power loss during acceleration or climbing.
• Metallic grinding noise from the bell housing – Surface fatigue on the shaft splines produces a distinct grinding sound, especially when shifting between forward and reverse.
• Oil leaks near the output flange – Degraded shaft sealing surfaces allow transmission fluid to escape, leaving puddles under the vehicle and reducing hydraulic pressure.
• Vibration during highway cruising – A bent or unbalanced shaft creates driveline shudder that intensifies at higher RPMs, often misdiagnosed as a universal joint issue.

Technical Specifications

Compatibility

This shaft is a direct replacement for the ZF WG 251 transmission series. Based on its spline count and bearing journal dimensions, it is also compatible with the WG180, WG200, and WG240 models produced between 2005 and 2020. The part integrates seamlessly with the COVER assembly and is secured using the CAP SCREW kit. Always verify your transmission’s serial number before ordering.

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