ZF 4699.808.040 GK16 | OEM Genuine Part

Overview

The ZF 4699.808.040 GK16 is a critical OEM genuine component designed for heavy-duty construction machinery transmissions. This part functions as a precision-machined gear or clutch hub assembly within the planetary gear set, directly influencing torque distribution and gear engagement. Located in the upper valve body or main shaft cluster of ZF power shift transmissions, the SKU 4699.808.040 ensures synchronized power flow under extreme load conditions. When paired with the 4699101093 HOUSING and the 4699301175 HOUSING, this part forms a sealed, high-pressure oil circuit that prevents contamination and maintains hydraulic integrity.

Symptoms of Failure

• Erratic gear engagement or delayed shifting: Worn splines or bearing surfaces on the 4699.808.040 cause hesitation when shifting between forward and reverse gears, especially under load.
• Low hydraulic pressure warnings: Internal wear reduces sealing efficiency, triggering pressure drop alerts on the transmission control unit.
• Metallic debris in transmission fluid: Friction from a failing GK16 assembly sheds fine metal particles, often visible during routine oil changes.
• Intermittent clutch slip: The part’s inability to hold torque results in momentary power loss during acceleration, particularly in WG180 and WG200 series transmissions.

Technical Specifications

Compatibility

This OEM genuine part is engineered for ZF WG180, WG200, and WG211 series power shift transmissions commonly used in wheel loaders, bulldozers, and excavators. It also fits select ZF 4WG-200 and 6WG-200 variants. For proper installation, always replace the 0634303936 O-RING and inspect the 4699301041 COVER for warping. The GK16 assembly is not backward-compatible with older ZF 4HP series transmissions.

Related Components