Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Universal Fit, Disc/Drum Brake System Type, Vacuum Diaphragm Dual Brake Booster Type
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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
Q & A
Tim talks about brake booster adjustment.
Street Rod Tech Kevin W. talks about the first steps in his plans of a disc brake upgrade on his 1954 Chevy Bel Air, upgrading the pedal to an under-dash setup and adding a booster.
In this Tech Tip, John responds to a customer request for our recommendations on brake kits for his ’56 F100.
Power brake boosters offer lower pedal effort and better braking characteristics, but which one is right for your hot rod, muscle car, or truck? We take the guesswork out of that question with our latest buyer's guide.
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!