ZF 4699.808.032 GK16 | OEM Genuine Part

Overview

The ZF 4699.808.032 GK16 is a precision-engineered component designed for heavy-duty construction machinery transmissions. This OEM genuine part functions as a critical control element within the valve body assembly, regulating hydraulic flow to ensure smooth gear engagement and clutch modulation. Positioned directly in the transmission’s hydraulic circuit, the SKU 4699.808.032 works in concert with the 4699101093 HOUSING and the 4699301175 HOUSING to maintain precise oil pressure distribution. Its robust construction withstands extreme thermal and mechanical loads common in excavators, wheel loaders, and other off-highway equipment.

Symptoms of Failure

• Erratic gear engagement or delayed shifting – When the GK16 valve spool wears, hydraulic pressure fluctuates, causing harsh or sluggish gear changes during operation.
• Internal transmission oil leaks – A degraded sealing surface on the 4699.808.032 allows pressurized fluid to bypass, leading to visible drips or puddles under the bell housing.
• Transmission overheating – Worn internal passages restrict oil flow, increasing friction and raising operating temperatures beyond normal limits.
• Intermittent loss of drive in specific gears – Partial blockage from debris or spool wear prevents full clutch pack engagement, resulting in momentary power loss under load.

Technical Specifications

Compatibility

This genuine ZF GK16 valve is engineered for use in the following transmission families commonly deployed in construction machinery: WG180, WG200, WG210, and WG250 series. It is also found in certain Ecomat 4HP and 6HP off-highway variants. The part interfaces directly with the 4699301041 COVER to create a sealed hydraulic chamber. Always verify your transmission model’s serial number against ZF documentation before installation.

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