ZF 4699.008.039 GK16 | OEM Genuine Part

Overview

The ZF 4699.008.039 GK16 is an OEM genuine gearset component engineered for heavy-duty construction machinery transmissions. This part resides within the planetary gear train assembly, where it facilitates precise torque multiplication and speed reduction during low-range operation. The SKU 4699.008.039 identifies a specific hardened steel gear cluster designed to withstand high cyclic loads in ZF power shift transmissions. It interfaces directly with the main housing assembly, often paired with a 4699101093 HOUSING to maintain proper gear alignment and oil distribution. Without this component, the transmission cannot transfer engine power to the final drives under load.

Symptoms of Failure

• Grinding noise during gear engagement: Worn teeth on the 4699.008.039 produce a metallic grinding sound when shifting from neutral to drive, especially under load in construction equipment.
• Intermittent power loss under load: A damaged gearset causes the transmission to momentarily lose torque when climbing grades or pushing material, often misdiagnosed as a clutch issue.
• Metal particles in transmission fluid: Flaking or spalling from the gear surface contaminates the hydraulic circuit, visible as glitter or sludge on the dipstick or filter magnet.
• Oil leaks near the housing interface: Vibration from a failing gear can loosen the adjacent 4699301175 HOUSING, leading to fluid seepage around the mating surfaces.

Technical Specifications

Compatibility

This gearset is primarily used in ZF WG series transmissions found in wheel loaders, graders, and telehandlers. Compatible models include the WG180, WG200, and WG210 series, as well as the 4WG200 variant. It also appears in certain Ecomat 2 and Ecomat 4 configurations for construction machinery. When replacing the 4699.008.039, always inspect the 4699301041 COVER for wear, as a distorted cover can misalign the gearset. Additionally, replace the 0634303936 O-RING at the housing joint to prevent fluid bypass.

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