Speedway Single Diaphragm Power Brake Booster, 7 Inch, Chrome Finish

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.

Booster Tech Tip (GIF)

• 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"