and Performance Parts and Accessories
A4742 - 1-1/8" Bore Power Brake Polished Billet Aluminum Master Cylinder Combo with Finned Cap
This 1-1/8" bore combination master cylinder features a built-in adjustable proportioning valve and wiring pigtail for rear brake light switch. Fits most GM mounting configurations.
Made in USA
Important: For power front disc / rear drum or front disc / rear disc vehicles only. Will not work on 4 wheel drum vehicles..