Wheel Cylinder Spitfire 76 to 80, GT6 MkIII

This is a Rear Wheel Cylinder 18mm (.70" bore) for a Triumph Spitfire 1976 (From FM40001) to 1980 and Triumph GT6 MK3 up to KF20000. Made in Italy by AP Braking. Cross Ref.# 580-090, 64673049 (cylinder casting# 64678251)