Clutch slave cylinder piston Diameter 185mm Suitable for Citroen DS carburettor, up to year of

construction 10/1972. Brief overview: DS carburettor up to 03/1971 = piston 18.5mm (only O-ring). DS carburettor from 03/1971 > 10/1972 = piston 18.5mm (O-ring + Teflon ring). DS carburettor from 10/1972 = piston 24.0mm (O-ring + Teflon ring + spring).