ZF 2098.309.031 AXLE BEVEL GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2098.309.031 AXLE BEVEL GEAR is a critical hypoid gear component engineered for the final drive assembly of ZF WG100, WG130, and WG131 transmissions. This OEM genuine part transfers rotational power from the driveshaft to the axle shafts at a precise angle, enabling smooth torque delivery to the wheels. As a key element in the differential system, it meshes directly with the CROWN WHEEL to multiply torque while reducing speed. The SKU 2098.309.031 is machined from case-hardened alloy steel to withstand high axial and radial loads in heavy-duty industrial applications.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth create a distinct high-pitched sound that intensifies under load, often indicating misalignment or pitting on the bevel gear surface.
• Vibration in the driveline at low speeds: Excessive backlash between the axle bevel gear and the CROWN WHEEL produces a rhythmic shudder felt through the chassis.
• Oil leaks near the axle housing seal: A failing gear can cause thermal expansion and seal degradation, leading to visible lubricant seepage around the differential area.
• Difficulty turning or binding in corners: Damaged gear teeth prevent proper differentiation, causing the wheels to skip or drag during tight maneuvers.

Technical Specifications

Compatibility

This axle bevel gear is specifically designed for ZF WG100, WG130, and WG131 transmission series used in agricultural tractors, construction loaders, and industrial material handlers. It is a direct replacement for the original equipment part and integrates with the DIFFERENTIAL assembly (part 2098109042) and the DIFFERENTIAL HOUSING (part 2098309010). For WG180 and WG200 models, verify housing dimensions before installation, as the DIFFERENTIAL (part 2099209001) may require a different gear ratio.

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