The Clutch Booster (OEM Part No. L90.404) is a hydraulic spare part designed to provide additional force assistance within compatible clutch systems. Manufactured from durable aluminum alloy and steel, the booster supports efficient hydraulic or mechanical force transmission to help achieve smoother clutch engagement and disengagement. The L90.404 clutch booster is designed for demanding operating environments where repeated clutch operation, vibration, and mechanical stress are common. It is suitable for maintenance, repair, and replacement applications involving worn or damaged clutch assistance components. This aftermarket replacement clutch booster provides a practical solution for restoring clutch operating assistance and supporting reliable performance of the clutch hydraulic system in mining and heavy-duty equipment.