ZF 4699.808.031 GK16 | OEM Genuine Part

Overview

The ZF 4699.808.031 GK16 is a precision-engineered genuine OEM component designed for the clutch pack assembly within heavy-duty ZF transmissions. This part functions as a critical piston or hub element, directly controlling hydraulic pressure application to the clutch discs. Located in the transmission’s valve body or rotating clutch drum, the SKU 4699.808.031 ensures smooth gear engagement and torque transfer under extreme loads. When paired with the 4699101093 HOUSING and the 4699301175 HOUSING, this part forms a sealed pressure chamber essential for reliable shifting in construction machinery.

Symptoms of Failure

• Delayed or harsh gear engagement: A worn 4699.808.031 can cause sluggish clutch pack application, leading to jarring shifts or hesitation when moving from neutral to drive.
• Internal hydraulic pressure loss: Cracks or scoring on this component allow transmission fluid to bypass, resulting in slipping under load and reduced torque output.
• Contaminated transmission fluid: Debris from a failing piston or hub can circulate through the system, accelerating wear on the 0634303936 O-RING and adjacent seals.
• Audible knocking or grinding: Mechanical play in this part produces metallic noises during gear changes, often accompanied by vibration in the driveline.

Technical Specifications

Compatibility

This genuine ZF GK16 component is primarily used in the following transmission models found in construction machinery: ZF WG180, ZF WG200, ZF WG210, and ZF 4WG200. It is also compatible with select variants of the ZF 6WG250 series. Always verify the part number against your transmission’s service manual. For proper assembly, ensure the 4699301041 COVER is torqued to factory specifications to prevent fluid bypass.

Related Components