Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Universal Fit, Disc/Drum Brake System Type, Vacuum Diaphragm Dual Brake Booster Type
- Compact 7" diameter booster allows for installation under the floor or on a firewall of almost any vehicle
- Dual diaphragm booster design increases booster performance especially on lower vacuum engines
- 1" bore dual outlet master cylinder effectively operates modern disc brake systems
- 3/8"-24 IFF outlets on the master cylinder allows common 3/16" brake lines to connect directly to it without the need for adapters
- All new components for long life and hassle free braking
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Compact 7" dual diaphragm booster assembly for installation under floor or on firewall of almost any vehicle. Cast iron master cylinder has a 1" 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.
- 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
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
What's In The Kit
Speedway Dual Diaphragm Power Brake Booster, 7 Inch, Chromate FinishPart # 91031432Qty x 1
Universal Power/Manual Master Cylinder, 1 Inch BorePart # 91031445Qty x 1
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Q & A
Tim talks about brake booster adjustment.
Learn how to assemble one of our bolt on nine-inch Ford disc brake kits in this step-by-step guide.
Check out the 410 sprint car brake installation and bleeding the brakes! We're making serious progress on our build.