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$179.99
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
Universal Fit, Vacuum Diaphragm Dual Brake Booster Type, 7 Inch Brake Booster Diameter
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Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Part # 91031412
$179.99
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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"
Sold in Quantity:
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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
- Brake System Builder's Tip (Link)
- 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
Some parts are not legal for use in California or other states with similar laws/regulations
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.
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Power/Manual Master Cylinder, 1-1/8 Inch BorePart # 91031440Qty x 1
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Speedway Dual Diaphragm Power Brake Booster, 7 Inch, Chromate FinishPart # 91031432Qty x 1
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Reviews
Q & A
Videos
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After getting the control arms and drop spindles installed last time, we are dying to see what it looks like on the ground. Today we are working with the Speedway Deluxe Disc Brake Kit. Josh and Joe are on a roll!
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Tim demonstrates the brake assembly with a Wide 5 drum brake and Speedway's new self-energizing backing plate.
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Tim explains the process of adjusting Buick Finned Drums to fit Speedway's self-energizing backing plate assembly.