ZF 4657.104.404 DIFFERENTIAL for WG 190/WG 210 | OEM Genuine Part

Overview

The ZF 4657.104.404 DIFFERENTIAL is a critical power distribution component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part sits at the heart of the final drive assembly, converting rotational input from the transmission output shaft into the torque split required for axle operation. The SKU 4657.104.404 ensures precise gear meshing and load balancing, directly influencing vehicle traction and driveline efficiency. This differential integrates seamlessly with the 4657101039: TRANSMISSION HOUSING and the 4657201028: HOUS.FRONT SECT to form a robust, sealed assembly that withstands high-torque industrial applications.

Symptoms of Failure

• Whining or howling noise during turns: A worn differential gear set produces a distinct metallic whine when cornering, indicating excessive clearance or pitting on the side gears.
• Oil leaks near the axle flange: Degraded seals or bearing wear in the 4657.104.404 unit often cause transmission fluid to weep from the differential housing, leaving visible drips under the vehicle.
• Intermittent wheel slip or loss of traction: Internal gear tooth fracture or spider gear failure results in uneven power delivery, especially under load on uneven terrain.
• Vibration at highway speeds: A failing differential bearing creates rhythmic vibrations that intensify with speed, often accompanied by a low-frequency hum from the driveline.

Technical Specifications

Compatibility

This differential is engineered for the ZF WG 210 series transmissions, with verified fitment in the WG 190 and WG 210 models. It is also mechanically compatible with the WG 180 and WG 200 series when used with the correct TRANSMISSION HOUSING and HOUS.FRONT SECT. The 4657.104.404 unit requires the HOUSING REAR PART for proper alignment and the CYLINDRICAL PIN for gear retention. Always verify your transmission serial number against ZF application charts before ordering.

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