8in Power Brake Booster Dual 67-70 Mustang Cast

The 8-inch power brake booster dual for 1967-70 Mustang is an essential upgrade for any classic car restorer or performance enthusiast looking to modernize stopping power on first and second generation Mustangs. Factory brake systems on these models rely on manual or marginal hydraulic assist, making highway driving and hard stops considerably more demanding than modern vehicles. This dual-diaphragm booster replaces the original equipment, delivering significantly improved brake pedal modulation and reducing the physical effort required to achieve full braking force—a critical safety upgrade for drivers who plan to use their classic Mustangs on public roads.

Manufactured by LEED BRAKES under the model designation PB0013, this 8-inch dual-diaphragm booster utilizes dual atmospheric chambers to maximize brake assist over a wider range of pedal inputs. The dual-chamber design is engineered to work with both front disc and rear drum or disc brake conversions common in Mustang restorations, providing proportional assistance that adapts to actual braking demand rather than delivering a fixed boost ratio. At 9.93 lbs and measuring 12.75 by 12.35 by 12.75 inches, the booster mounts in the original engine bay location without requiring extensive bracket fabrication, though integration with your specific master cylinder and brake line routing should be verified during installation.

Restoration shops, street rod builders, and classic Mustang owners benefit most from this upgrade when upgrading to modern brake pads and fluid or converting to front disc brakes. The booster is compatible with 1967, 1968, 1969, and 1970 Mustangs and works seamlessly with cast-iron or aluminum master cylinders sized between 1 and 1.125 inches in bore diameter. Proper bleeding of the system after installation ensures elimination of air pockets that can compromise pedal feel, and regular inspection of the vacuum hose and check valve maintains consistent booster function for years of reliable stopping performance.