ZF 4699.302.309 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.302.309 SPUR GEAR is a critical power transmission component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part, identified by SKU 4699.302.309, functions as a precision-machined gear that transfers rotational force between shafts within the gear train. Positioned within the intermediate shaft assembly, it ensures smooth torque delivery and consistent gear engagement under heavy-duty industrial loads. The spur gear’s straight-cut teeth mesh directly with adjacent gears, converting input speed and torque into usable output for the driveline. For optimal assembly integrity, this gear works in conjunction with the 4699101113 HOUSING and the 4699301201 HOUSING, which provide structural support and alignment within the transmission casing.

Symptoms of Failure

• Audible gear whining or grinding noise during operation: Worn or chipped teeth on the 4699.302.309 spur gear produce a distinct high-pitched whine or grinding sound, especially under load or during gear shifts. This noise often signals tooth surface fatigue or pitting.
• Intermittent gear slipping or loss of power transfer: As the spur gear wears, it may fail to maintain proper mesh with mating gears, causing sudden slips or hesitation in power delivery. This symptom is most noticeable during acceleration or when climbing grades.
• Metallic debris in transmission oil: Excessive wear on the gear teeth generates fine metallic particles that contaminate the lubricant. Checking the oil pan or filter for silver-colored sludge is a reliable indicator of spur gear degradation.
• Vibration or shuddering from the transmission housing: A damaged spur gear creates uneven rotational forces, transmitting vibrations through the 4699309202 HOUSING COVER and into the chassis, often felt as a shudder during steady-speed driving.

Technical Specifications

Compatibility

This spur gear is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used in intermediate shaft positions. The gear interfaces directly with the 0636101477 CAP SCREW for secure mounting and requires proper alignment with the housing assemblies. Always verify your transmission’s serial number against OEM documentation to confirm fitment.

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