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Jan 8, 2026

Alfa 4C clutch slave 55230619

Alfa 4C clutch slave 55230619 Alfa 4C clutch slave 55230619

Alfa 4C clutch slave 55230619

The Alfa 4C TCT gearbox system uses two separate clutch slave cylinders to independently actuate the two clutch discs.

  • K1 (Clutch 1):
    The K1 clutch slave cylinder is mounted inside the bellhousing. It bolts directly to the bellhousing and acts directly on the clutch assembly.

  • K2 (Clutch 2):
    The K2 clutch slave assembly consists of multiple components and is mounted at the rear of the transmission housing. It connects to a shaft that runs through the transmission via the hollow input shaft and is secured to a flanged release bearing, which interfaces with the clutch assembly.

For the K2 clutch slave, a precise preload must be set to ensure proper clutch engagement. Once the preload is correctly adjusted, a locking sleeve must be installed to prevent the retaining nut from loosening over time.

Note: each clutch slave is monitored for position by position sensor
K1 - Position sensor located on actuator Valve-body
K2 - Position sensor is mounted on clutch slave.

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