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

The Mopar 8in Booster/Master 1-1/16in Bore Natural is an essential component for builders and restorers working on classic Mopar brake systems. This combined brake booster and master cylinder assembly serves as the foundation of any reliable stopping system, converting engine vacuum into hydraulic pressure that translates pedal input into predictable, progressive braking force. Whether you're completing a frame-off restoration or upgrading an aging brake setup, this booster/master combination provides the engineering foundation necessary for safe, repeatable brake performance.

The 8-inch booster diameter and 1-1/16-inch master cylinder bore are engineered to deliver balanced pedal effort and modulation across a wide range of brake line pressures. The natural finish preserves the casting while allowing for custom finishing to match your engine bay aesthetic. TUFF-STUFF's manufacturing focuses on direct OEM-specification compliance, ensuring the vacuum-assisted booster operates at factory pressure curves.

This assembly, weighing 23.15 lbs, is substantial enough to provide reliable vacuum assistance while remaining compact within standard engine compartments. The 13.5 x 12.1 x 21-inch envelope fits most classic Mopar applications without requiring extensive modification to existing brake lines or firewall clearances. It is compatible with Mopar A-Body, B-Body, and E-Body platforms from the 1960s to the 1980s.