A4 Sedan L4-1.8L Turbo (AWM) (2001)
Brake Master Cylinder: Specifications
Teves
Brake master cylinder piston diameter mm (in) .......................................................................................................................... 23.81 mm (0.937 in.)
Double Piston
Brake master cylinder piston diameter mm (in) ............................................................................................................................ 2.54 mm (0.999 in.)