Mopar 8in Booster/Master 1-1/16in Bore Natural

The Mopar 8in Booster/Master 1-1/16in Bore Natural by TUFF-STUFF is a complete brake system assembly designed for classic Mopar A-Body, B-Body, and E-Body vehicles from 1964 to 1974. This dual-purpose master cylinder and power booster combination eliminates the need for separate components, streamlining both installation and maintenance. Restorers and performance enthusiasts rely on this kit to restore factory-correct braking capability while maintaining authenticity on vintage Mopar muscle cars and street machines.

Engineered with a 1-1/16 inch bore master cylinder and dual diaphragm booster design, this assembly delivers consistent hydraulic pressure and reduced brake pedal effort across a range of driving conditions. The 8-inch booster diameter provides optimal leverage for vacuum-assisted stopping power, while the dual integral reservoir system consolidates fluid capacity into a single, compact package. Gold zinc plating protects the steel construction against corrosion, ensuring durability through decades of road use. The natural finish accepts traditional brake system paints and coatings for seamless restoration aesthetics.

This master/booster kit is ideal for owners rebuilding original brake systems or upgrading vehicles that have suffered component deterioration. Direct compatibility with Mopar A-Body platforms—including Dodge Darts, Plymouth Valiants, and Dusters—as well as B-Body mid-size cars and E-Body muscle platforms ensures correct fitment without modification. The integrated design simplifies plumbing and reduces air pockets in the hydraulic system. Weighing 23.15 pounds and measuring 13.5 x 12.1 x 21 inches, it occupies minimal engine bay space while meeting OEM specifications for pressure rating and response time.