ZF 4699.303.232 PLANETARY GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.303.232 PLANETARY GEAR is a critical torque-multiplying component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part sits within the planetary gearset assembly, directly transferring rotational force from the sun gear to the carrier, enabling smooth ratio changes under heavy load. As a precision-machined gear, the SKU 4699.303.232 ensures exact meshing with adjacent pinions and ring gears, maintaining the transmission’s power density and durability. When replacing this gear, it is essential to inspect the surrounding HOUSING (4699101159) and HOUSING (4699301254) for wear, as these components share the same load path.

Symptoms of Failure

• Gear slipping under acceleration: A worn planetary gear loses tooth contact, causing intermittent power loss during upshifts or when climbing grades.
• Metallic grinding noise from the transmission: Pitting or spalling on the gear teeth produces a distinct whining or grinding sound, especially in lower gears.
• Oil contamination with metallic debris: Flakes of hardened steel in the transmission fluid indicate advanced gear wear, often requiring a full flush and replacement of the HOUSING KIT (4699298049).
• Erratic shift timing: Damaged planetary gears cause the transmission control unit to detect torque irregularities, leading to harsh or delayed shifts.

Technical Specifications

Compatibility

This planetary gear is specifically designed for ZF WG100, WG130, and WG131 transmissions. It is also compatible with the WG180 and WG200 series when used in the first planetary stage. Always verify the gearset configuration; the 4699.303.232 replaces the original gear in the sun-to-planet interface. For complete assembly, pair this gear with the HOUSING COVER (4699309123) to seal the gearset and prevent contamination.

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