ZF 4699.008.031 GK16 | OEM Genuine Part

Overview

The ZF 4699.008.031 GK16 is a genuine OEM gear component engineered for the internal power flow architecture of heavy-duty ZF construction machinery transmissions. This part, identified by SKU 4699.008.031, functions as a critical drive element within the planetary gear set, directly transferring torque from the input shaft to the intermediate housing assembly. It is precision-machined to maintain exact gear mesh clearances, ensuring smooth power delivery under extreme load conditions. When installed alongside the 4699101093 HOUSING, this component forms the primary load-bearing interface that governs gear ratio stability in wheel loaders and graders.

Symptoms of Failure

When the ZF 4699.008.031 GK16 begins to wear, operators often notice a distinct “gear whine” during acceleration under load, a common long-tail search query for transmission issues. A second failure symptom is intermittent gear slipping in forward ranges, particularly when the transmission oil temperature rises above 90°C. Third, debris contamination in the hydraulic filter—visible as metallic particles—indicates spalling on the gear teeth. Finally, a sudden loss of power to the wheels during hard shifting points to stripped or chipped teeth on this specific gear, requiring immediate replacement to avoid catastrophic damage to the 4699301175 HOUSING.

Technical Specifications

Compatibility

This genuine ZF GK16 gear is designed for integration into the WG180, WG200, and WG240 series transmissions commonly found in construction machinery such as Volvo L120 wheel loaders and Caterpillar 950G graders. It directly mates with the 4699301041 COVER assembly and requires a new 0634303936 O-RING during installation to prevent fluid bypass. The part is also compatible with certain ErgoPower and Ecolife variants that utilize the same planetary carrier geometry. Always verify the transmission serial number before ordering, as minor spline variations exist between pre-2010 and post-2010 production runs.

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