We are open and actively processing orders, however, please note some products may not be available or may take longer than normal to arrive due to the COVID-19 virus. All KeyParts ground shipped products are shipping 10 to 15 business days after placing your order, all Truck Freighted (large and heavy) items are shipping 4 to 6 weeks after placing your order.
American Autowire products are shipping 8 weeks after placing your order.

Universal 8" Dual Diaphragm Chrome Booster

Our Price $92.30
    Our Price:
    Not yet rated
    Part #:
    • 100% secure
    • Price match guarantee
    • Easy returns process
    • Convenient payment options

    Product Description

    Universal 8" Dual Diaphragm Power Booster

    • Chrome finish
    • 3-3/8" Bolt Pattern (Firewall Side)
    • 3-3/8 Center to Center Bolt Hole (Master cylinder Side)
    • Uses adjustable pin
    • Great for installs on GM A, F, X, Body Cars with Big Blocks or Engines with tall headers

    **Note** These boosters will work on a variety of GM, Ford, Trucks, & Passenger Cars. When ordering an universal brake booster please make sure you have the correct brackets or pedal assembly for your application.

    Will need adjustable pedal rod extension & the correct clevis for your application.


    • Part Number: PB8531C
    • UPC: 638339849894
    • Weight: 9
    • Box Size: 15x11x14
    • Brake Booster Type: Vacuum Diaphragm
    • Brake Booster Finish: Chrome plated
    • Mounting Pattern: 3-3/8” Square
    • Brake Booster Diameter: 8” Dual
    • Length: 5.50"
    • Rod Length: 4"
    • Notes: Length from mount face to M.C. mount face is 5-1/4". Pushrod extends 4" from mount face and has 3/8"-24 threads. Mount bolts are 5/16"-20 x 7/8".

    Customer Reviews

    Average Not yet rated

    Write an online review and share your thoughts with others.

    There are no reviews