Dorman M87167 Master Brake Cylinder for 60-66 chevy K10 P10 L50 GMC K1000 K15

1966 GMC K1000 Bore: 1.125 In.; w/Manual Brakes; Flat Face Cowl. 1966 GMC K1000 Pickup Bore: 1.125 In.; w/Manual Brakes; Flat Face Cowl. 1965 Chevrolet L50 Bore: 1.125 In.; Dual Bore Cylinder. 1964 Chevrolet L50 Bore: 1.125 In.; Dual Bore Cylinder.