ZF 4481.333.077 DIFFERENTIAL BEVEL GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4481.333.077 DIFFERENTIAL BEVEL GEAR is a critical component within the final drive assembly of ZF WG-series powershift transmissions. This OEM genuine part, identified by SKU 4481.333.077, transfers torque from the driveshaft to the differential case, enabling smooth power distribution to the axles. It sits directly within the differential housing and meshes with the ring gear to manage speed variation between wheels during turns. Precision-ground teeth ensure minimal backlash and quiet operation under heavy loads. For proper sealing and structural integrity, this gear is installed adjacent to the 4143101009: HOUSING and the 4143301025: HOUSING, which enclose the differential assembly.

Symptoms of Failure

• Whining or howling noise from the differential – Worn bevel gear teeth create a distinct high-pitched whine during acceleration or deceleration, often mistaken for wheel bearing noise.
• Vibration in the driveline at low speeds – As the gear surface degrades, uneven tooth contact causes noticeable shuddering through the chassis, especially when turning.
• Oil leaks around the differential housing – A failing gear can generate excessive heat, degrading the 0634313603: O-RING and leading to fluid seepage near the housing joint.
• Intermittent gear slipping or clunking – Advanced wear allows the bevel gear to lose proper mesh, producing a metallic clunk when torque is applied suddenly.

Technical Specifications

Compatibility

This differential bevel gear is engineered for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used in standard differential configurations. Always verify the gear ratio and housing clearance before installation. The gear interfaces directly with the 4143101009: HOUSING and the 4143301025: HOUSING to ensure precise alignment.

Related Components