New not rebuilt brake master cylinder for 1967-72 Mustang and Cougar models (exc. Boss 429). Manufactured from cast aluminum to factory specifications includes new piston springs seals and o-rings.Applications:1967-72 Mustang built before (7-1-72) with power front disc rear drum brakesExclude Boss 429 models1967-72 Cougar built before (7-1-72) with power front disc rear drum brakes.
