ZF 4616.308.148 GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.308.148 GEAR is a critical drive component engineered specifically for the WG 65 series transmission. This OEM genuine part functions as an intermediate gear within the planetary gearset, transferring torque from the input shaft to the output assembly. Precision-machined from case-hardened alloy steel, the 4616.308.148 ensures smooth power delivery and load distribution under high-stress operating conditions. When installed alongside the TRANSMISSION HOUSING, this gear maintains proper alignment and reduces vibration, extending the service life of the entire drivetrain.

Symptoms of Failure

• Whining or grinding noise during gear engagement – Worn teeth on the 4616.308.148 produce a distinct metallic sound, especially under load, indicating surface fatigue or pitting.
• Intermittent gear slipping under heavy torque – A failing gear loses tooth contact, causing the transmission to momentarily lose power transfer, often misdiagnosed as clutch slip.
• Metal particles in transmission fluid – Flaking or spalling from the gear surface contaminates the oil, visible during routine drain intervals as glitter-like debris.
• Vibration through the shift lever or chassis – Uneven wear on the gear’s helical teeth creates harmonic oscillations that transmit through the housing and mounts.

Technical Specifications

Compatibility

This gear is a direct fit for the ZF WG 65 series transmission family, including models WG65, WG80, WG120, WG150, WG180, and WG200. It is also compatible with select ZF Ecomat 4HP and 5HP variants that share the same planetary gear architecture. Always verify the spline count and bore diameter against your existing assembly. For secure mounting, pair this gear with the HEXAGON SCREW and HEXAGON SCREW fasteners, and ensure the HEXAGON SCREW is torqued to factory specifications to prevent axial play.

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