ZF 4699.041.008 GK26LD | OEM Genuine Part

Overview

The ZF 4699.041.008 GK26LD is a genuine OEM transmission component engineered for the demanding environment of construction machinery. This part functions as a critical hydraulic control element within the valve body assembly, regulating oil flow to the clutch packs for precise gear engagement. As an integral part of the transmission’s shift logic, the 4699.041.008 ensures smooth power delivery under heavy loads. The SKU 4699.041.008 is manufactured to ZF’s original specifications, guaranteeing a direct fit and long service life when replacing worn units in the valve body stack.

Symptoms of Failure

• Erratic shifting under load: When the 4699.041.008 wears, you may experience harsh or delayed gear changes, particularly when the machine is under heavy strain.
• Internal transmission oil leaks: A failing unit can cause pressurized oil to bypass seals, leading to visible drips around the transmission housing or a drop in fluid level.
• Clutch pack slippage: Worn internal passages reduce hydraulic pressure, causing clutches to slip during acceleration or on inclines, which generates excessive heat.
• Intermittent loss of gear: The transmission may suddenly drop out of gear or refuse to engage a specific range, often accompanied by warning codes on the machine’s display.

Technical Specifications

Compatibility

This genuine ZF part is designed for use in the GK26LD valve body assembly, which is commonly found in ZF WG180, WG200, and WG210 transmission models. These transmissions are widely used in wheel loaders, telehandlers, and other heavy construction machinery. The 4699.041.008 interfaces directly with the 4699101086 HOUSING and the 4699301223 HOUSING to form a sealed hydraulic circuit. During installation, always replace the 0636302022 SCREW PLUG and the 0501319149 SCREW PLUG to prevent thread galling and ensure proper torque retention.

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