ZF 4616.122.005 PRESSURE OIL PUMP for WG65 | OEM Genuine Part

Overview

The ZF 4616.122.005 PRESSURE OIL PUMP is a critical hydraulic component engineered specifically for the WG 65 Series transmission. This OEM genuine part generates the necessary oil flow and pressure to lubricate gears, actuate clutches, and cool internal assemblies. Positioned within the main transmission housing, the pump draws fluid from the sump and delivers it under pressure to the valve body and lubrication circuits. The SKU 4616.122.005 ensures precise volumetric displacement and consistent pressure output, directly influencing shift quality and overall transmission longevity.

Symptoms of Failure

• Delayed or harsh gear engagement: When the pressure oil pump wears, insufficient hydraulic pressure causes slow clutch pack application, leading to noticeable shift lag or jarring engagement.
• Transmission overheating: A failing pump reduces oil circulation, resulting in elevated operating temperatures that can damage seals and friction materials.
• Low or erratic transmission oil pressure: Visible pressure gauge fluctuations or warning lights indicate the pump can no longer maintain steady hydraulic output.
• Whining or grinding noise from the transmission: Cavitation or worn pump gears produce audible metallic sounds, especially during acceleration or under load.

Technical Specifications

Compatibility

This pressure oil pump is primarily designed for the ZF WG 65 Series, but its hydraulic characteristics also suit other ZF powershift transmissions in the same family. Compatible models include the WG 65, WG 80, WG 100, WG 120, WG 150, WG 180, and WG 200 series. Always verify your transmission serial number before installation. The pump mounts directly to the 4616101059 TRANSMISSION HOUSING and is secured using 0636011038 HEXAGON SCREW, 0636011118 HEXAGON SCREW, and 0636016015 HEXAGON SCREW fasteners.

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