ZF 0731.611.084 ORIFICE for WG200/WG201/WG250 | OEM Genuine Part

Overview

The ZF 0731.611.084 ORIFICE is a precision-machined hydraulic flow restrictor designed for the WG200, WG201, and WG250 series transmissions. This OEM genuine part controls the volume and pressure of transmission fluid passing through specific lubrication and cooling circuits within the valve body assembly. By maintaining exact fluid metering, the 0731.611.084 ensures consistent clutch pack engagement and thermal regulation. This orifice works in conjunction with the 4644101175 TRANSMISSION HOUSING and the 4644301221 TRANSMISSION HOUSING to create a sealed hydraulic environment. The SKU 0731.611.084 is a direct replacement for the original factory-installed component, guaranteeing proper flow dynamics without modification.

Symptoms of Failure

• Erratic gear engagement or delayed shifting: A worn or clogged orifice disrupts hydraulic timing, causing harsh or slow shifts between forward gears.
• Transmission overheating under load: Insufficient fluid flow through the orifice reduces cooling capacity, leading to elevated oil temperatures during operation.
• Oil seepage around the valve body area: Cracks or deformation in the orifice body can cause pressurized fluid to escape, leaving visible residue on the 0730365067 TYPE PLATE or adjacent surfaces.
• Intermittent loss of forward drive: When the orifice fails to meter flow correctly, clutch packs may not receive adequate pressure, resulting in temporary power loss.

Technical Specifications

Compatibility

This orifice is engineered for ZF WG-series powershift transmissions, specifically the WG180, WG200, WG201, WG250, and WG251 models. It is also compatible with certain ZF 4WG-200 and 4WG-250 variants used in construction and agricultural machinery. The part interfaces directly with the 0631311009 GROOVED STUD that secures the valve body assembly. Always verify your transmission serial number against the WG200, WG201, or WG250 parts catalog before ordering.

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