7-Inch Zinc-Plated Dual Power Brake Booster Kit with 1-1/8-Inch Bore Master Cylinder and Side Mount Valve for GM AFX Disc/Drum Applications

Elevate your classic GM vehicle’s braking system with the new 7-Inch Dual Diaphragm Zinc-Plated Power Brake Booster, Master Cylinder, and Disc/Drum Proportioning Side-Mount Valve Kit. Each power booster is expertly hand-polished before receiving a durable yellow zinc finish, delivering long-lasting corrosion resistance and a high-quality appearance.

Designed for a direct fit to your classic GM vehicle’s factory firewall, this kit includes a new 1-1/8" bore master cylinder and a proportioning valve engineered specifically for front disc/rear drum brake applications, ensuring a seamless upgrade or replacement.

Ideal for classic GM enthusiasts seeking improved braking performance, this combo kit is compatible with a wide range of models, including 1964–1974 Oldsmobile Vista Cruiser, Chevrolet Malibu, Chevelle, Camaro, Buick Special, and iconic 1967–1972 Pontiac GTO, LeMans, and Firebird models. Whether completing a disc brake conversion or replacing worn components, this kit offers dependable performance and straightforward installation.

Available from LEED Brakes, this 7-inch power booster combo delivers enhanced safety, reliability, and performance for your classic vehicle.

Specifications

• Master Cylinder Bore Size: 1-1/8 in
• Bowl Design: Dual Bowl
• Master Cylinder Material: Cast Iron
• Master Cylinder Finish: Natural
• Reservoir Included: Yes
• Reservoir Material: Cast Iron
• Master Cylinder Cap Included: Yes
• Brake Booster Type: Dual Diaphragm
• Brake Booster Diameter (in): 7 in.
• Brake Booster Material: Steel
• Brake Booster Finish: Zinc
• Brake Pedal Rod Extension Included: Yes
• Mounting Hardware Included: Uses Original
• Quantity: Kit

LEED Brakes Pushrod Measuring Tool PSA Video

All LEED Brakes booster and master cylinder assemblies are preset before shipping. Watch this short video to learn how to properly measure pushrod depth and how to quickly test your measuring tool for accuracy.

Click here to learn more about why LEED Brakes has added this warning to their products.