ZF 4644.324.022 SLIDING SLEEVE for WG200 | OEM Genuine Part

Overview

The ZF 4644.324.022 SLIDING SLEEVE is a critical synchronizer component engineered for the WG200 series transmission. This OEM genuine part facilitates smooth gear engagement by sliding along the transmission shaft to lock the desired gear ratio into place. Positioned within the main shaft assembly, the SKU 4644.324.022 works in concert with the DISCONNECTION mechanism to ensure precise power transfer. When paired with a properly torqued HEXAGON SCREW, this sleeve maintains axial alignment within the TRANSMISSION HOUSING, preventing premature wear on the OUTPUT FLANGE.

Symptoms of Failure

• Grinding noise during gear shifts: A worn sliding sleeve fails to engage synchronizer rings cleanly, producing a metallic grinding sound when shifting under load.
• Intermittent gear disengagement: As the internal splines degrade, the sleeve may slip out of position, causing the transmission to pop out of gear during highway driving.
• Hard shifting or gear lockout: Excessive wear on the sleeve’s internal teeth prevents smooth axial movement, requiring excessive force to engage or disengage gears.
• Metal particles in transmission fluid: Flaking material from the sliding sleeve contaminates the oil, often visible during routine drain intervals.

Technical Specifications

Compatibility

This sliding sleeve is specifically designed for the ZF WG200 series transmissions, including the WG180, WG200, and WG210 variants. It is also compatible with select ZF Ecomat 4HP and 5HP models that share the same synchronizer architecture. Always verify the spline count and internal diameter against your transmission’s service manual before installation. The sleeve interfaces directly with the DISCONNECTION hub and must be paired with a new HEXAGON SCREW to meet OEM torque specifications.

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