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Product Summary

Universal Fit, 3.75" Overall Thickness, Steel, Chrome

  • 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
  • Master cylinder studs are two 3/8" coarse studs across from each other on 3-3/8" centers
  • Booster on master cylinder side for master cylinder snout or flange to fit into is 1.620"

Key Specs

MFG. Part #91031450
Overall Thickness3.75"
Outside Diameter7"
Bolt Hole Pattern3.38" x 3.38"
Centerline of Holes3.38"

Need To Know

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Details

These show-quality chrome 7" diameter boosters have a single diaphragm for use with lightweight cars. Accepts most power brake master cylinders.

  • 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
  • Booster is 3-3/4" thick

Learn more about selecting the proper brake booster for your vehicle by reading our tech article.Brake System Selection.

Charts

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
  • 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

KEY SPECS
MFG. Part #91031450
BrandSpeedway Motors
Overall Thickness3.75"
Outside Diameter7"
Bolt Hole Pattern3.38" x 3.38"
Centerline of Holes3.38"
GENERAL
Material TypeSteel
FinishChrome
Sold in QuantityEach
Brake Booster TypeVacuum Diaphragm Single