Genuine OEM Nissan Clutch Master Cylinder Piston Kit, part number 30611AA025. This kit contains the necessary components to repair or replace the piston assembly within the clutch master cylinder. It is crucial for the proper functioning of the clutch system, enabling the hydraulic pressure needed to disengage the clutch. The kit includes the piston, seals, spring, and retainer clip. Genuine OEM parts are manufactured to precise specifications, ensuring correct sealing and smooth operation of the master cylinder for reliable clutch engagement and disengagement.