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#91031414
Dual 8 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
- Compact for installation under floor or on firewall of almost any vehicle
- New dual diaphragm booster measures 8" in diameter and provides additional stopping power compared to single diaphragm designs
- Master cylinder has a 1 1/8" bore with 3/8"-24 IFF outlets on both sides of the M/C
$247.99
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$252.98
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Product Summary
Universal Fit, Vacuum Diaphragm Dual Brake Booster Type
- Compact for installation under floor or on firewall of almost any vehicle
- New dual diaphragm booster measures 8" in diameter and provides additional stopping power compared to single diaphragm designs
- Master cylinder has a 1 1/8" bore with 3/8"-24 IFF outlets on both sides of the M/C
- Booster has four bolts on 3 3/8" centers which fits a variety of mounting brackets and pedal assemblies
- Assembled length is 13.5" from booster mount flange to the end of the master cylinder
Comes as a Kit
View Kit Components
Key Specs
| MFG. Part # | 91031414 |
| Brand | Speedway Motors |
| Brake Booster Diameter | 8 Inch |
| Master Cylinder Material | Steel |
| Master Cylinder Finish | Natural |
Need To Know
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Speedway Motors 91031414 Details
Compact 8" 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.
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
Speedway Motors 91031414 Specifications
Speedway Motors 91031414 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031414 |
| Brand | Speedway Motors |
| Brake Booster Diameter | 8 Inch |
| Master Cylinder Material | Steel |
| Master Cylinder Finish | Natural |
| GENERAL | |
| Brake Booster Type | Vacuum Diaphragm Dual |
| Outlet Count | Tandem/Both Sides |
| Outlet Fitting | 3/8"-24 |
| Master Cylinder Bore Size | 1-1/8 Inch |
| Brake Booster Material | Steel |
| Brake Booster Finish | Zinc |
| Overall Length | 13.5" |
| Master Cylinder Port Sizes | 3/8"-24 IFF |
| 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. |
Ratings & Reviews
4.8
13 Reviews
Customers applaud the product's quality and practicality - the brake booster and master cylinder combo is noted for its perfect fit and smooth installation. The product's superior performance and compatibility with a variety of vehicles is also praised, setting it apart from competitors. There were minor adjustments needed during installation but overall, customers highly recommended this well-priced, high-quality combo unit, citing its reliability and ease of use.
Ratings & Reviews
4.8
13 Reviews
Customers applaud the product's quality and practicality - the brake booster and master cylinder combo is noted for its perfect fit and smooth installation. The product's superior performance and compatibility with a variety of vehicles is also praised, setting it apart from competitors. There were minor adjustments needed during installation but overall, customers highly recommended this well-priced, high-quality combo unit, citing its reliability and ease of use.
4.8
13 reviews
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Filter by Ratings
What's great just as like they described
5.0
a month ago
Xan
Newark new york ohio
Verified
Has good color all the bolts and all the small parts were there to install it. So everything worked great.
Would Recommend
Good Product
5.0
6 months ago
Cowboy
Texas
Verified
Very good quality
Would Recommend
Master cylinder/Booster Combo
5.0
8 months ago
Mike's57
Minooka, IL
Verified
Installed this brake combo in my 1957 Chevy 3100 pickup. Installation was straight forward and the brake system works great!
Would Recommend
Yes
5.0
11 months ago
Shorty
Tucson AZ
Verified
Bolts up toy car.... Very easy for installation
Would Recommend
Dual disc brake & Booster
5.0
11 months ago
32coup3wdw
Washington
Verified
1932 3 window coupe, went with dual 8" due to the single 7" boosters are junk
Would Recommend
would buy again
4.0
a year ago
stan
sing sing
Verified
works very good
Would Recommend
Never a problem
5.0
6 years ago
Gibby
Seymour Tn
Verified
Parts fit every time
Would Recommend
Braking power
5.0
7 years ago
Nate
Anchorage Ak
Verified
Good quality brake booster and master cylinder combo. Packed and shipped with care . Everything I've received from Speedway arrives well packed. Didnt set my brakes yet but I'm confident it will work fine.
Would Recommend
Be careful
4.0
8 years ago
way wayne
Hawaii
Verified
Had to screw booster tip in all the way, and still about zero clearance. Added a gasket for the M/C blo-wup. Seems to be working fine.
Would Recommend
2nd booster I've bought, great unit and great price!
5.0
8 years ago
Ray
Castle Rock, WA.
Verified
1st one used on a 58 Chev I'm building, 2nd one went on a 51 GMC 5 yd dump truck.
Would Recommend
Showing 10 of 13 reviews