ZF 4699.805.011 GK30 | OEM Genuine Part

Overview

The ZF 4699.805.011 GK30 is a precision-engineered component designed for heavy-duty construction machinery transmissions. This OEM genuine part serves as a critical interface within the gear train assembly, ensuring smooth torque transfer and load distribution under extreme operating conditions. Specifically, the GK30 functions as a synchronizer or shift element component, directly engaging with the main shaft to facilitate seamless gear changes in ZF powershift transmissions. The SKU 4699.805.011 is manufactured to exacting ZF tolerances, making it a direct replacement for worn units in wheel loaders, graders, and dump trucks. When installed alongside the 4699101044 HOUSING, this part ensures proper alignment and hydraulic pressure containment within the clutch pack assembly.

Symptoms of Failure

• Hard shifting or gear clash during engagement: A worn 4699.805.011 can cause delayed or grinding gear changes, especially under load. This is a common “transmission hard shifting” issue in ZF units.
• Oil contamination with metallic debris: As the GK30 wears, fine metal particles enter the hydraulic circuit, leading to “transmission oil contamination” and accelerated wear of adjacent components like the 4699301111 HOUSING.
• Intermittent power loss in specific gears: Operators may notice “transmission slipping in 2nd gear” or other ranges, indicating the GK30 is no longer maintaining positive engagement.
• Audible whining or clicking from the transmission case: This noise, often described as “ZF transmission whining noise,” signals excessive play in the GK30 assembly, requiring immediate inspection.

Technical Specifications

Compatibility

This ZF 4699.805.011 GK30 is primarily compatible with the following ZF transmission models used in construction machinery: WG180, WG200, WG210, and 4WG200 series. It is also found in select 6WG200 and Ecomat 4HP variants. Always verify your transmission serial number before ordering. For complete assembly, pair this part with the 4699301054 HOUSING COVER and the 4699301055 COVER to ensure proper sealing and protection against debris ingress.

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