ZF 4616.307.003 SPUR GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.307.003 SPUR GEAR is a critical power transmission component engineered specifically for the WG 65 series transmission assembly. This OEM genuine part functions as a precision-machined gear that transfers rotational force between parallel shafts within the gear train, ensuring smooth torque delivery and minimal mechanical loss. The SKU 4616.307.003 is designed to mesh seamlessly with adjacent gears in the planetary set, maintaining optimal gear ratio integrity under high-load conditions. When installed correctly alongside the 4616101059 TRANSMISSION HOUSING, this spur gear forms the backbone of the drivetrain’s power flow path, directly influencing shift quality and overall transmission longevity.

Symptoms of Failure

• Whining or grinding noise during gear engagement: A worn 4616.307.003 spur gear produces a distinct metallic whine that intensifies under acceleration, indicating tooth surface degradation or pitting.
• Intermittent gear slippage under load: When the spur gear’s tooth profile wears unevenly, the transmission may momentarily lose torque transfer, causing hesitation or RPM flare during uphill climbs or heavy hauling.
• Metallic debris in transmission fluid: Flakes or fine metal particles found during fluid changes signal advanced wear of the spur gear’s hardened surface, often accompanied by reduced hydraulic pressure.
• Vibration through the driveline: A damaged spur gear creates cyclic vibration patterns that transmit through the 0636011038 HEXAGON SCREW fasteners and housing, felt as a rhythmic shudder at specific RPM ranges.

Technical Specifications

Compatibility

This spur gear is primarily designed for the ZF WG 65 series transmission, but it also serves as a direct replacement in several other ZF off-highway and industrial gearboxes. Compatible models include the WG180, WG200, WG240, and WG310 series, where the gear interfaces with the countershaft and main drive gear cluster. For proper installation, always verify the gear’s tooth count and bore diameter against your transmission’s service manual. The 0636011118 HEXAGON SCREW and 0636016015 HEXAGON SCREW are commonly used to secure the gear’s retaining plate during reassembly.

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