8 inch dual power booster, 1-1/8 inch bore master (zinc)


New 8" Dual Diaphragm zinc plated power brake booster & master cylinder. This 8" power booster is hand polished before a yellow zinc finish is applied for a top quality finish. The top quality power brake booster is designed mount directly to your factory firewall. Also included in this dual diaphragm brake booster kit is a new 1-1/8" bore master cylinder equipped to work with disc/drum or disc/disc applications.

Looking for replacement parts for this item? Click Here

Pricing: $289.95


Elevate your vehicle's braking system with LEED Brakes' 8" Dual Diaphragm Zinc Plated Power Brake Booster & Master Cylinder Kit. This advanced kit features an 8" power booster that undergoes a meticulous hand polishing process before being coated with a yellow zinc finish for a superior quality appearance. Designed for direct mounting to your factory firewall, this top-notch power brake booster simplifies installation while maintaining a sleek, OEM look.

Included in this kit is a new 1-1/8" bore master cylinder, compatible with both disc/drum and disc/disc braking systems, making it a versatile solution for various applications. Whether upgrading for performance or restoration, this kit ensures enhanced braking responsiveness and reliability.


This kit is the perfect upgrade for a wide range of GM models, enhancing the braking system of vehicles such as the Chevrolet Nova, Oldsmobile Omega, Buick Apollo, and many more from the 1964-1974 era.

Discover the unmatched quality and performance of the GM AFX 8-inch dual diaphragm brake booster kit available at LEED Brakes. This zinc-plated power brake booster kit, complete with a 1-1/8 inch bore master cylinder, offers a significant upgrade for improved safety and driving experience.

GM AFX 8 Inch Dual Diaphragm 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

Click here to learn more about why LEED Brakes has added this warning to their products.LEED Brakes Prop 65 Label


Shipping Information

  • Item Requires Shipping
  • 18.0 lbs.
  • W10.5000” x H10.5000” x L18.2500”

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.

  • The LEED Brakes Difference
  • Expert AdviceNeed help with your brake system, contact us today!
  • Fast Shipping Most orders ship within 1-2 business days
  • WarrantyEach LEED Brakes product is backed by a 1 year warranty
  • EZ ReturnsFast returns or refunds