ZF 2099.304.002 SPUR GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2099.304.002 SPUR GEAR is a critical power-transfer component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part sits within the gear train assembly, directly meshing with the 2098309008 CROWN WHEEL to manage torque distribution and rotational speed. As a precision-machined spur gear, it ensures smooth engagement between the input shaft and the differential unit. The SKU 2099.304.002 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications.

Symptoms of Failure

• Whining or grinding noise during acceleration: Worn gear teeth produce a distinct high-pitched whine or metallic grinding sound, especially under load, indicating surface fatigue or pitting on the 2099.304.002 spur gear.
• Vibration in the driveline at low speeds: As the gear loses its tooth profile integrity, it causes uneven rotational motion, leading to noticeable vibrations that worsen when the transmission is cold.
• Metal debris in transmission fluid: Flaking or chipped gear teeth shed ferrous particles into the oil, which can be detected during routine fluid changes or via magnetic drain plugs.
• Intermittent gear slipping or loss of power transfer: Advanced wear reduces the gear’s ability to maintain positive engagement, resulting in momentary power loss or hesitation during gear shifts.

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 conjunction with the 2099109038 DIFFERENTIAL assembly. For WG131 applications, it pairs with the 2098209016 DIFFERENTIAL to ensure correct gear ratios. The gear fits within the 2095309059 DIFF.HOUSING, requiring proper alignment during installation.

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