ZF 4642.105.005 DISCONNECTION for WG150 | OEM Genuine Part

Overview

The ZF 4642.105.005 DISCONNECTION is a critical OEM genuine component engineered for the WG 150 Series transmission. This part functions as the primary mechanical interface that isolates the torque converter from the drivetrain during neutral or park engagement, ensuring smooth power interruption and preventing unintended gear engagement. Positioned within the transmission’s hydraulic control circuit, the SKU 4642.105.005 directly regulates oil flow to the clutch packs, making it essential for reliable shift sequencing. Without this disconnection mechanism, the transmission cannot safely disengage engine power, leading to potential driveline damage. It is often replaced alongside the 4642101047: TRANSMISSION HOUSING and 4642301207: TRANSMISSION HOUSING during major overhauls, as these components share critical sealing surfaces.

Symptoms of Failure

When the ZF 4642.105.005 DISCONNECTION begins to fail, operators typically notice three to four distinct warning signs. First, delayed or harsh engagement when shifting from neutral to drive or reverse becomes apparent, often accompanied by a noticeable clunk. Second, intermittent gear slipping under load occurs, particularly during low-speed maneuvers, as the disconnection fails to maintain proper hydraulic pressure. Third, transmission fluid leaks may develop around the valve body area, indicated by puddles under the vehicle near the bell housing. Fourth, erratic shift patterns—such as unexpected downshifts or failure to hold gear—signal that the disconnection is not correctly modulating oil flow. These symptoms often prompt technicians to inspect the 0730365067: TYPE PLATE for correct part identification before ordering a replacement.

Technical Specifications

Compatibility

This OEM genuine disconnection is primarily designed for the ZF WG 150 Series, but it also fits select models in the WG 180 and WG 200 families due to shared hydraulic architecture. Specifically, it is compatible with WG 150, WG 151, WG 152, WG 180, WG 181, and WG 200 transmissions manufactured after 2005. For proper installation, ensure the 0631311009: GROOVED STUD is torqued to factory specifications, as this stud secures the disconnection assembly within the valve body. Always verify your transmission serial number against the OEM parts catalog to confirm fitment, as variations exist between early and late production runs.

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