ZF 4616.305.017 SPUR GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.305.017 SPUR GEAR is a critical power transmission component engineered specifically for the WG 65 Series transmission family. This OEM genuine part, identified by SKU 4616.305.017, sits within the intermediate shaft assembly where it meshes directly with the main drive gear to transfer torque from the engine to the output shaft. Precision-ground teeth ensure minimal backlash and quiet operation under heavy loads. For proper alignment, this spur gear is mounted inside the 4616101059 TRANSMISSION HOUSING, which provides the rigid support necessary for long-term durability. Without this gear, the entire drivetrain loses its ability to maintain synchronized rotation across the gearset.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth create a high-pitched metallic sound that intensifies under load, often mistaken for bearing failure.
• Intermittent gear slipping under torque: As tooth profiles degrade, the gear loses positive engagement, causing momentary loss of power delivery during uphill climbs or heavy hauling.
• Metallic debris in transmission fluid: Flaking or pitting on the spur gear surface contaminates the oil, visible as glitter-like particles during routine drain intervals.
• Vibration through the shift lever: Uneven wear on the gear’s helix angle produces cyclic vibrations that transmit directly to the operator station.

Technical Specifications

Compatibility

This spur gear is engineered for the WG 65 Series transmission family, which includes models such as WG65, WG80, WG100, WG120, WG150, WG180, and WG200. It is a direct replacement for original equipment in ZF off-highway and industrial transmissions. Always verify the gear count and shaft spline configuration against your specific transmission serial number before installation. The gear interfaces with the countershaft and requires proper shimming using the 0631306085 CYLINDRICAL PIN for precise axial positioning.

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