ZF 4481.333.081 DIFFERENTIAL BEVEL GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4481.333.081 DIFFERENTIAL BEVEL GEAR is a critical component within 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, enabling smooth torque distribution during turns. Positioned inside the differential housing, the bevel gear meshes precisely with the ring gear to manage speed differences between wheels. The SKU 4481.333.081 is manufactured to ZF’s exacting tolerances, ensuring minimal backlash and long service life in heavy-duty industrial applications. When installed alongside the 4143101009 HOUSING and 4143301025 HOUSING, this gear maintains proper alignment within the transmission case.

Symptoms of Failure

• Whining or howling noise during turns: Worn gear teeth create excessive play, producing a distinct metallic sound when the vehicle corners.
• Vibration in the driveline: A failing differential bevel gear causes uneven power delivery, felt as shuddering through the chassis at low speeds.
• Oil leaks near the differential housing: Degraded seals, such as the 0634313603 O-RING, allow lubricant to escape, often accompanied by gear debris in the fluid.
• Intermittent gear slipping: Advanced wear prevents proper meshing, leading to momentary loss of drive power under load.

Technical Specifications

Compatibility

This differential bevel gear is engineered for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select variants of the WG180 and WG200 series when used with the correct 4475280018 SCREW PLUG and housing assemblies. Always verify your transmission’s serial number against ZF’s parts catalog before installation.

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