ZF 4699.801.204 GK10 | OEM Genuine Part

Overview

The ZF 4699.801.204 GK10 is a precision-engineered gear cluster assembly designed for heavy-duty construction machinery transmissions. This OEM genuine part sits within the planetary gear set of ZF power shift transmissions, where it manages torque distribution and speed reduction between the input shaft and the output shaft. The SKU 4699.801.204 is a critical component for maintaining driveline integrity in wheel loaders, dozers, and graders. When paired with the 4699101095 HOUSING and the 4699102154 INPUT assembly, this part ensures synchronized gear engagement under extreme load conditions.

Symptoms of Failure

• Transmission gear slipping under load: When the GK10 gear teeth wear or chip, the transmission may lose torque transfer during heavy lifting or climbing, causing sudden RPM spikes without forward motion.
• Metallic grinding noise from the bell housing: Worn bearings or damaged gear faces produce a distinct grinding sound, especially when shifting from neutral to drive, indicating the 4699001204 GK10 needs replacement.
• Oil contamination with metal particles: As the gear cluster degrades, fine metallic debris enters the hydraulic circuit, clogging filters and reducing clutch pack pressure. This often accompanies failure of the 4699103067 OUTPUT shaft seal.
• Delayed engagement or harsh shifting: Excessive backlash in the gear set causes hesitation when engaging forward or reverse gears, leading to operator fatigue and reduced cycle times.

Technical Specifications

Compatibility

This GK10 gear cluster is engineered for ZF WG series power shift transmissions commonly used in construction machinery. It is directly compatible with the following ZF models: WG180, WG200, WG210, and WG250. The part also fits select ErgoPower and Ecolife variants where the planetary gear set shares the same spline geometry. Always verify the 0769100082 TYPE PLATE on your transmission housing to confirm model identification before installation.

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