ZF 4616.308.052 SPUR GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.308.052 SPUR GEAR is a precision-machined component engineered specifically for the WG 65 series transmission. This gear sits within the intermediate shaft assembly, where it transfers rotational torque between parallel shafts to maintain synchronized gear engagement under heavy loads. As an OEM genuine part, SKU 4616.308.052 ensures exact tooth geometry and surface hardness required for reliable power flow in ZF’s WG65 driveline. When installed alongside the 4616101066 TRANSMISSION HOUSING, this spur gear forms the core of the gear train that modulates speed ratios during shifting operations.

Symptoms of Failure

• Whining or grinding noise during acceleration — Worn tooth profiles on the 4616.308.052 spur gear produce a high-pitched metallic sound, especially noticeable when the WG65 transmission is under load. This indicates pitting or spalling on the gear flanks.
• Intermittent gear slippage under torque — As the spur gear loses its hardened surface layer, it can no longer maintain positive engagement with mating gears, causing momentary loss of drive power during uphill climbs or heavy hauling.
• Metallic debris in transmission fluid — Advanced wear of the 4616.308.052 releases fine steel particles into the oil, which can be detected during routine fluid changes. This debris often clogs the filter and accelerates wear on adjacent components like the 0636011118 HEXAGON SCREW fasteners.
• Vibration through the gearshift lever — Uneven tooth wear creates rotational imbalance, transmitting noticeable vibration through the drivetrain and into the cab, particularly at cruising speeds.

Technical Specifications

Compatibility

This spur gear is designed for the ZF WG 65 series transmission family. It is directly compatible with the following models: WG65, WG80, WG100, and WG120. The 4616.308.052 gear also fits select variants of the WG180 and WG200 transmissions when used in the intermediate shaft position. For proper installation, ensure the mating 4616301307 HOUSING or 4616301309 HOUSING is free of cracks and wear. Always replace the spur gear in sets with its corresponding shaft bearings to maintain correct backlash tolerances.

Related Components