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$179.99
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore

Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore

Universal Fit, Vacuum Diaphragm Dual Brake Booster Type, 8 Inch Brake Booster Diameter, Natural

6 Reviews | 9 Answered Questions
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Lincoln, NE -
Phoenix, AZ -
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Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
X
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 8 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
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Part # 91031413
$179.99
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  • Compact for installation under floor or on firewall of almost any vehicle
  • NEW booster measure 8" in diameter
  • Master cylinder has a 1" bore with 3/8"-24 IFF outlets on both sides of the M/C
  • Four bolts on 3 3/8" centers
  • Pushrod-to-mounting flange is 5-1/2"

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Details

Brake Booster Type:
Vacuum Diaphragm Dual
Brake Booster Diameter:
8 Inch
Outlet Fitting:
3/8"-24 (4)
Master Cylinder Material:
Steel
Master Cylinder Finish:
Natural
Master Cylinder Bore Size:
1 Inch
Brake Booster Material:
Steel
Brake Booster Finish:
Zinc
MFG. Part #:
91031413
Overall Length:
13.25"
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

Info

Compact 8" 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.

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
  • 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.
  • Speedway Dual Diaphragm Power Brake Booster, 8 Inch, Chromate Finish
    Part # 91031435
    Qty x 1
  • Universal Power/Manual Master Cylinder, 1 Inch Bore
    Part # 91031445
    Qty x 1

More Like This

Reviews

Q & A

Videos & Articles
  •
    Converting a Manual Brake System - 1967 Chevelle
    Jeff converts his 1967 Chevelle manual brake system to power by installing a Delco booster kit. Learn how to make the master cylinder more resistant to brake fluid and a few tips for an easy install.
  • Disc Brake Conversion
    How to change brake pads, rotors and calipers using the Mustang II complete brake kit. Replace your drum brakes with disc brakes for performance and better braking ride. For use on Bobcat and Mustang II spindles.

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