ZF 4699.841.017 GK26LD | OEM Genuine Part

Overview

The ZF 4699.841.017 GK26LD is a genuine OEM transmission component engineered for heavy-duty construction machinery. This part functions as a critical hydraulic control element within the valve body assembly, regulating oil flow to the clutch packs and ensuring precise gear engagement. The SKU 4699.841.017 is specifically designed to maintain the integrity of the transmission’s hydraulic circuit, preventing pressure loss and ensuring consistent power delivery under extreme loads. It sits directly between the main housing and the valve plate, interfacing with the 4699101086 HOUSING and the 4699301223 HOUSING to create a sealed, pressurized channel for transmission fluid.

Symptoms of Failure

• Erratic gear engagement or delayed shifting – When the 4699.841.017 wears, internal seals degrade, causing hydraulic pressure fluctuations that result in harsh or delayed shifts, especially under load.
• Transmission fluid leaks near the valve body – Cracks or warping in this component allow ATF to escape, often pooling around the bell housing or transmission pan. This is a common sign of failure in high-hour machines.
• Clutch slippage during acceleration – Loss of pressure regulation leads to incomplete clutch pack engagement, producing a distinct RPM flare without corresponding vehicle speed increase.
• Overheating transmission fluid – A failing GK26LD can cause constant clutch slip, generating excess heat that degrades fluid and damages seals like the 0501319149 SCREW PLUG and 0636302022 SCREW PLUG.

Technical Specifications

Compatibility

This genuine ZF 4699.841.017 component is engineered for use in the following ZF transmission models commonly found in construction machinery such as wheel loaders, telehandlers, and graders:

• ZF WG180 – 4-speed powershift transmission
• ZF WG200 – 4-speed heavy-duty transmission
• ZF WG211 – 5-speed off-highway transmission
• ZF 4WG-200 – Modular powershift series

Always verify the specific transmission serial number before installation. This part is not backward-compatible with older WG100 series units without adapter modifications.

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