Part # 91031451
Single Diaphragm Chrome Booster Master Cylinder Combo
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Speedway Motors6 Reviews
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12 Questions
- These show-quality brake combos come with a 7" single diaphragm chrome plated steel booster and a chrome master cylinder
- Master Cylinder has a 1" bore and dual 3/8"-24 IFF outlets (on both sides)
- New single diaphragm booster measures 7" in diameter and is the smallest size offered which fits well in tight spaces
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Product Summary
Universal Fit, 7 Inch Brake Booster Diameter, Chrome
- These show-quality brake combos come with a 7" single diaphragm chrome plated steel booster and a chrome master cylinder
- Master Cylinder has a 1" bore and dual 3/8"-24 IFF outlets (on both sides)
- New single diaphragm booster measures 7" in diameter and is the smallest size offered which fits well in tight spaces
- Booster has four bolts on 3 3/8" centers which fits a variety of mounting brackets and pedal assemblies
- Assembled length is 12" from booster mount flange to the end of the master cylinder
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Key Specs
| MFG. Part # | 91031451 |
| Brand | Speedway Motors |
| Brake Booster Diameter | 7 Inch |
| Master Cylinder Material | Steel |
| Master Cylinder Finish | Chrome |
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Details
These show-quality brake combos come with a 7" single diaphragm chrome plated steel booster and a chrome master cylinder with a 1" bore and dual 3/8"-24 IFF outlets (on both sides). Includes plugs for unused ports.
Suitable for use with front disc/rear drum brake systems.
Learn more about selecting the proper master cylinder for your vehicle by reading our tech article.Brake System Selection.
Charts
Booster Tech Tip (GIF)
Specs
- 3-3/4" thick from master cylinder mount face to firewall mount face
- 4" long firewall mount face to end of pushrod
- Booster mounts to bracket or body with four bolt square pattern on 3-3/8" centers
- Pushrod stud is 3/8" fine thread
- Master cylinder studs are two 3/8" coarse studs across from each other on 3-3/8" centers
- Opening of booster on master cylinder side for master cylinder snout or flange to fit into is 1.620"
- Booster is 3-3/4" thick from mounting surface to mounting surface for master cylinder
- Shaft coming out of booster for attachment to pedal arm is 3/8" fine thread
- Outside diameter is 7"
Specifications
Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031451 |
| Brand | Speedway Motors |
| Brake Booster Diameter | 7 Inch |
| Master Cylinder Material | Steel |
| Master Cylinder Finish | Chrome |
| GENERAL | |
| Brake Booster Type | Vacuum Diaphragm Single |
| Outlet Count | Tandem/Both Sides |
| Outlet Fitting | 3/8"-24 (4) |
| Master Cylinder Bore Size | 1 Inch |
| Brake Booster Material | Steel |
| Brake Booster Finish | Chrome |
| Overall Length | 12.00" |
| 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 | Chrome finish on both master cylinder and booster. |