7-Inch Zinc-Plated Power Brake Booster with 1-Inch Bore Master Cylinder and Drum/Drum Proportioning Valve for 1964-1966 Ford Mustang

Upgrade your 1964–1966 Ford Mustang with the LEED Brakes 7" Zinc-Plated Power Brake Booster and Master Cylinder Combo. Designed to mount directly to your Mustang’s factory firewall, this kit is an excellent upgrade from manual to power brakes, especially for vehicles equipped with automatic transmissions.

Included in this kit is a high-quality, rebuilt factory-style 1" bore master cylinder engineered specifically for 4-wheel drum brake applications. The zinc-plated finish provides corrosion resistance while maintaining a clean, classic under-hood appearance that complements your vintage Mustang.

This power brake booster and master cylinder combo is compatible with:

• 1964 Ford Mustang
• 1965 Ford Mustang
• 1966 Ford Mustang

Whether you’re restoring a first-generation Mustang or simply upgrading drivability, this LEED Brakes kit delivers reliable braking performance while preserving the original look of your classic Ford.

Master Cylinder Bore Size: 1 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: Single 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 Power Booster Installation & Pushrod Depth Overview

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.

Learn more about LEED Brakes' Prop 65 warning.