8-Inch Zinc Dual Power Brake Booster with 1-1/8 Inch Bore Master Cylinder and Side-Mount Valve for Disc/Drum Brakes on 1967-1972 Chevrolet or GMC

Upgrade your 1967–1972 Chevrolet or GMC truck or SUV with this 8" Dual Diaphragm zinc-plated power brake booster, master cylinder, and disc/drum proportioning valve combo. Each 8" power booster is hand-polished before a durable yellow zinc finish is applied, delivering corrosion resistance and a clean under-hood appearance. The black powder-coated mount and pushrod assembly provide a direct fit to your factory firewall for a factory-style installation.

Also included in this GM truck brake booster kit is a 1-1/8" bore master cylinder and proportioning valve engineered for front disc/rear drum brake applications, ensuring balanced braking performance and reliable stopping power.

This kit fits a wide range of 1967–1972 Chevrolet and GMC C/K trucks and SUVs, including C10, K10, C15/C1500, K15/K1500, Suburban, Blazer, and Jimmy models.

1967–1972 GM Truck 8" Dual Diaphragm Zinc Power Brake Booster Kit Highlights

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): 8 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 verify measuring tool accuracy before installation.

Learn more about LEED Brakes' Prop 65 warning.