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$188.99
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore

Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore

Universal Fit, Vacuum Diaphragm Dual Brake Booster Type, 7 Inch Brake Booster Diameter

12 Reviews | 7 Answered Questions
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Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
X
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
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Part # 91031412
$188.99
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  • Compact for installation under floor or on firewall of almost any vehicle
  • NEW booster measures 7" in diameter
  • Master cylinder has a 1 1/8" bore with 3/8"-24 IFF outlets on both sides of the master cylinder
  • Booster bolt pattern is four bolts on 3 3/8" centers which fits a variety of brackets and pedal assemblies
  • New parts make installation cleaner and easier

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Details

Brake Booster Type:
Vacuum Diaphragm Dual
Brake Booster Diameter:
7 Inch
Outlet Fitting:
3/8"-24 (4)
Master Cylinder Material:
Steel
Master Cylinder Bore Size:
1-1/8 Inch
Brake Booster Material:
Steel
MFG. Part #:
91031412
Overall Length:
13.50"
Master Cylinder Port Sizes:
3/8-24
Bolt Hole Pattern:
3.38" x 3.38"
Centerline of Holes:
3.38"
Reservoir Included:
Yes
Sold in Quantity:
Kit
Notes:
9103190 STEEL PORT PLUG KIT.

Info

Compact 7" dual diaphragm booster assembly for installation under floor or on firewall of almost any vehicle. Cast iron master cylinder has a 1-1/8" bore and is suited for disc-disc or disc-drum combinations.

Master cylinder features two 3/8"-24 inverted flare ports on each side (plugs are included for ports not in use).

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection. 

Notes

  1. Brake System Builder's Tip (Link)
  2. Booster Tech Tip (GIF)

Specs

  • Pushrod-to-mounting flange is 5-1/2"
  • Four bolts on 3-3/8" centers
  • 5" thick from master cylinder mount to firewall face
  • 4" long firewall mount face to end of pushrod
  • Pushrod stud is 3/8" fine thread
  • (4) qty 3/8"-24 outlet ports (2 plugs included)
  • 8" from mount to outer edge

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • Power/Manual Master Cylinder, 1-1/8 Inch Bore
    Part # 91031440
    Qty x 1
  • Speedway Dual Diaphragm Power Brake Booster, 7 Inch, Chromate Finish
    Part # 91031432
    Qty x 1

More Like This

Reviews

Q & A

Videos & Articles
  •
    Effects of Master Cylinder Bore Size on Your Brake System
    Follow this guide to learn how the change of bore size on a master cylinder affects a four-wheel disc brake system. View the conversion chart to figure the total bore area for your brake setup.
  • '55 Chevy Revival
    Follow along to see how a 1955 Chevy Bel Air is chosen for a Tri-5 restoration project. From a floral dash to a hole in the floor, there is some work to be done!

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