ZF 4699.825.149 GP25 | OEM Genuine Part

Overview

The ZF 4699.825.149 GP25 is a critical OEM genuine gearset assembly engineered for the power take-off (PTO) drive within ZF heavy-duty construction machinery transmissions. This part, identified by SKU 4699.825.149, sits directly in the auxiliary drive path, transferring rotational force from the transmission housing to hydraulic pumps or secondary drivelines. As a precision-machined component, it ensures consistent torque delivery under extreme loads. When replacing this unit, technicians often pair it with the 4699025162: GP25 to maintain matched gear wear patterns and prevent premature failure.

Symptoms of Failure

• Whining or grinding noise from the PTO housing: Worn gear teeth on the 4699.825.149 produce a high-pitched metallic sound during engagement, especially under load.
• Intermittent hydraulic pump output: A failing GP25 causes erratic pump speed, leading to sluggish boom or bucket operation in excavators and loaders.
• Metal particles in transmission fluid: Spalling gear surfaces shed debris, contaminating the oil and accelerating wear on the 4699101154: HOUSING and adjacent bearings.
• Oil seepage at the PTO flange: Excessive gear play distorts the seal surface, causing fluid to leak past the 4699102106: INPUT shaft area.

Technical Specifications

Compatibility

This GP25 gearset is primarily used in ZF WG180, WG200, and WG250 series transmissions found in wheel loaders, telehandlers, and crawler dozers. It also fits select ErgoPower and Ecolife models where a PTO drive is required. For complete assembly, verify the 4699103123: OUTPUT shaft alignment and replace the housing gasket if damaged.

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