ZF 4651.353.002 SPUR GEAR for WG100 | OEM Genuine Part

Overview

The ZF 4651.353.002 SPUR GEAR is a precision-machined helical gear component designed for the WG 100 series transmission family. This OEM genuine part transfers rotational torque between parallel shafts within the gear train, ensuring smooth power delivery and load distribution under heavy-duty industrial conditions. The SKU 4651.353.002 sits directly in the intermediate shaft assembly, meshing with adjacent gears to maintain correct gear ratios and reduce vibration. When installed alongside a TRANSMISSION HOUSING, this spur gear aligns perfectly with the bearing supports, minimizing axial play and extending service life.

Symptoms of Failure

When the ZF 4651.353.002 spur gear begins to wear, operators may notice distinct operational issues. Whining or grinding noises during gear engagement often indicate tooth surface pitting or chipping, a common failure mode in high-load applications. Intermittent gear slipping under load occurs when worn teeth lose proper contact, causing power loss and erratic shifting. Metallic debris in the transmission oil filter is a clear sign of gear material fatigue, often accompanied by increased operating temperatures. Vibration through the driveline at specific RPM ranges suggests uneven tooth wear or misalignment, which can accelerate damage to the O-RING seals and adjacent housing components.

Technical Specifications

Compatibility

This spur gear is primarily designed for the ZF WG 100 series transmissions, including models WG100, WG120, and WG150. It may also be compatible with select WG180 and WG200 variants where the intermediate shaft gear train uses identical tooth geometry and bore dimensions. Always verify the gear count and shaft diameter against your specific transmission serial number. The gear interfaces directly with the HOUSING bearing pockets and requires proper shimming when replacing the TRANSMISSION HOUSING assembly.

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