ZF 2099.364.010 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2099.364.010 SPUR GEAR is a critical power transmission component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part functions as an intermediate gear within the planetary gearset, transferring rotational force from the input shaft to the differential assembly. Precision-ground teeth ensure minimal backlash and optimal load distribution across the gear train. The SKU 2099.364.010 is manufactured to ZF’s original specifications, guaranteeing exact fitment and durability in heavy-duty industrial applications. This spur gear works in concert with the 2099109002 DIFFERENTIAL to manage torque flow, while the 2099364014 CROWN WHEEL receives its output for final drive reduction.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth on the 2099.364.010 produce a distinct high-pitched sound that intensifies under load, often mistaken for differential noise.
• Vibration in the driveline at steady speeds: Pitting or chipping on the spur gear face creates cyclic vibrations felt through the chassis, particularly between 30-50 mph.
• Metallic debris in transmission fluid: Flaking from the gear surface contaminates the oil, visible as silver particles on the dipstick or during drain intervals.
• Intermittent gear slipping under heavy torque: Advanced wear reduces tooth engagement, causing momentary loss of power transfer when climbing grades or hauling loads.

Technical Specifications

Compatibility

This spur gear is specifically designed for ZF WG-series transmissions with a 100mm gear center distance. Primary applications include the WG100, WG130, and WG131 models found in medium-duty trucks, agricultural tractors, and construction loaders. It also fits select variants of the WG180 and WG200 series when used with the corresponding 2098309010 DIFFERENTIAL HOUSING. For proper installation, always pair this gear with the 2099209001 DIFFERENTIAL to maintain correct axial alignment and preload specifications.

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