MPA Electrical B1307 Power Brake Booster

Remanufactured Vacuum Brake Booster for 1991 GM Applications

MPA Electrical B1307 is a remanufactured vacuum power brake booster built for 1991 Buick, Cadillac, and Oldsmobile applications. It is engineered to deliver strong braking assist with reduced pedal effort, making it a direct replacement for vehicles that need restored brake booster performance.

This MPA Electrical brake booster line focuses on replacement-ready components, vacuum sealing, and end-of-line testing to help verify function before it leaves the factory. Part number B1307 is a vacuum booster only and does not include the master cylinder.

Key Features

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing construction
• 10.83 in. diaphragm diameter (275.08 mm)
• 2 mounting studs with 10 x 1.50 mm master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket, seal, front seal, and mounting bracket not included
• 100% end-of-line tested by MPA Electrical

Product Details

MPA Electrical B1307 is designed for drivers who need consistent vacuum-assisted braking response in a remanufactured OE-style replacement. The booster uses specially treated replacement components to support vacuum sealing and pressure transfer, helping restore pedal feel and brake assist on 1991 Buick Reatta, Buick Riviera, Cadillac Eldorado, Cadillac Seville, and Oldsmobile Toronado applications. If you are searching for a reman vac pwr brake booster w/o master cyl for 1991 Buick Riviera or a power brake booster for 1991 Cadillac Eldorado, this part number matches those applications.

This part cross-references OE number 18017254 for the same application. Search terms such as MPA Electrical B1307, 1991 Buick Reatta brake booster, and 1991 Oldsmobile Toronado vacuum brake booster all point to this replacement unit.

What It Helps Restore

• Hard brake pedal feel caused by a weak booster
• Reduced brake assist during normal stopping
• Vacuum leakage at the booster housing
• Inconsistent pedal response under braking
• Brake performance loss related to booster wear

Installation Notes

Verify master cylinder fitment before installation because the master cylinder is not included. Confirm the 10 x 1.50 mm stud thread size, mounting stud count, and diaphragm diameter against the original unit before removal. Inspect the vacuum supply line, pushrod alignment, and pedal linkage condition during replacement so the new booster can operate correctly.

Quality Assurance

MPA Electrical subjects each booster to 100% end-of-line testing using proprietary test equipment. The remanufactured design uses new replacement and specially treated components to support vacuum seal integrity, pressure transfer, and overall braking performance.