ZF 2099.304.003 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2099.304.003 SPUR GEAR is a precision-engineered component designed for the final drive assembly of ZF WG100, WG130, and WG131 transmissions. This OEM genuine part transfers rotational force from the differential to the axle shafts, ensuring smooth power delivery under heavy loads. As a critical element within the gear train, the spur gear (SKU: 2099.304.003) meshes directly with the 2098309008: CROWN WHEEL to convert torque into linear motion. It is manufactured from case-hardened alloy steel to withstand continuous high-stress operation in agricultural and construction machinery.

Symptoms of Failure

• Whining or grinding noise during acceleration: A worn 2099.304.003 spur gear produces a distinct metallic whine that intensifies under load, often indicating tooth surface pitting or chipping.
• Vibration in the driveline at low speeds: As gear teeth wear unevenly, vibrations transmit through the axle housing, particularly noticeable when turning or reversing.
• Metal particles in transmission oil: Flakes or glitter in the fluid during routine changes signal advanced gear degradation, requiring immediate replacement of the spur gear and associated 2099109038: DIFFERENTIAL components.
• Intermittent gear slipping under heavy torque: Worn teeth lose proper mesh with the crown wheel, causing momentary loss of drive power during uphill or loaded operation.

Technical Specifications

Compatibility

This spur gear is engineered exclusively for ZF WG100, WG130, and WG131 series transmissions. It is not interchangeable with WG180 or WG200 models due to differing tooth counts and shaft diameters. When replacing this gear, always inspect the mating 2098209016: DIFFERENTIAL and 2095309059: DIFF.HOUSING for wear, as damaged components can accelerate failure of the new spur gear.

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