ZF 4699.003.041 GK20 | OEM Genuine Part

Overview

The ZF 4699.003.041 GK20 is a precision-engineered OEM genuine part designed for the clutch pack assembly within ZF heavy-duty powershift transmissions. This component, identified by SKU 4699.003.041, functions as a critical pressure plate or clutch piston retainer, ensuring consistent hydraulic clamping force during gear engagement. It sits directly within the transmission housing, interfacing with the 4699101046 HOUSING to maintain proper alignment of the rotating clutch elements. Without this part, the transmission cannot achieve the necessary torque transfer for construction machinery applications.

Symptoms of Failure

• Erratic gear engagement or slipping under load: When the 4699.003.041 wears, hydraulic pressure bleeds past the sealing surfaces, causing the clutch to slip during heavy excavation or grading operations.
• Internal transmission oil leaks: A worn GK20 component allows transmission fluid to bypass into adjacent cavities, often visible as wet spots near the 4699301109 HOUSING interface.
• Delayed shifting or harsh engagement: Worn sealing lands on this part reduce clutch pack apply speed, leading to noticeable lag when shifting between forward and reverse gears.
• Metallic debris in the oil pan: Advanced wear generates fine metal particles from the hardened steel surface, detectable during routine oil sampling.

Technical Specifications

Compatibility

This GK20 component is engineered for ZF powershift transmissions commonly used in construction machinery. It is a direct fit for the following transmission models: WG180, WG200, WG210, and WG220. The part also integrates with the 4699301017 BEARING COVER and the 4699301085 COVER to form a sealed clutch piston assembly. Always verify your transmission serial number before ordering.

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