ZF 4699.298.018 PLANET GEAR SET for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.298.018 PLANET GEAR SET is a critical torque-multiplying assembly designed for the planetary gear train of ZF WG100, WG130, and WG131 transmissions. This OEM genuine part sits directly within the main gear cluster, transferring rotational force from the sun gear to the ring gear while managing load distribution across multiple pinions. The SKU 4699.298.018 ensures precise meshing with adjacent components, including the OUTPUT shaft assembly and the HOUSING that encloses the gear set. When paired with the GP25 carrier, this planet gear set delivers the high-torque capacity required for heavy-duty industrial applications.

Symptoms of Failure

• Whining or grinding noise during gear engagement: Worn planet pinions produce a distinct metallic whine under load, often mistaken for bearing failure.
• Intermittent gear slipping under heavy torque: As the planet gear set loses tooth profile integrity, the transmission may momentarily lose power transfer during acceleration or uphill operation.
• Metallic debris in transmission oil: Pitting or spalling on planet gear teeth generates fine steel particles visible during oil changes, indicating imminent failure of the 4699.298.018 set.
• Vibration through the driveline at specific RPMs: Uneven wear across the planet gears creates harmonic vibrations that intensify between 1,200–1,800 RPM.

Technical Specifications

Compatibility

This planet gear set is engineered specifically for ZF WG-series transmissions. Verified compatible models include:

• ZF WG100 – All variants (WG100, WG100-1, WG100-2)
• ZF WG130 – Standard and high-torque versions
• ZF WG131 – Including WG131-1 and WG131-2 sub-variants

For proper installation, the 4699.298.018 must be assembled with the INPUT shaft and the OUTPUT flange. Always replace the GP25 carrier simultaneously to prevent accelerated wear on new components.

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