MPA Electrical B3042 Power Brake Booster

Vacuum Brake Booster for Isuzu and Honda

MPA Electrical B3042 is a remanufactured vacuum power brake booster built for direct replacement in select Isuzu and Honda applications. It is engineered to deliver strong braking assist with reduced pedal effort, helping restore consistent brake feel in vehicles such as the Isuzu Axiom, Honda Passport, Isuzu Rodeo, Isuzu Rodeo Sport, and Isuzu Amigo.

This MPA Electrical reman vac pwr brake booster w/o master cyl is a standard replacement part for drivers servicing vacuum-assisted brake systems. Part number B3042 is built with a metal housing and tested for vacuum seal integrity and pressure transfer performance.

Key Features

• Remanufactured vacuum power brake booster
• Standard replacement brake service grade
• Metal housing for durable brake system service
• 247.14 mm / 9.73 in diaphragm diameter
• 2 mounting studs with 8 x 1.25 mm master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting bracket, gasket, front seal, and seal kit not included

Product Details

MPA Electrical’s reman vac pwr brake booster w/o master cyl is rebuilt for vacuum brake systems that require reliable assist and predictable pedal response. The booster is remanufactured with new replacement and specially treated components to help maintain vacuum sealing and pressure transfer. Each unit is 100% end-of-line tested with proprietary equipment to verify performance before release. Part number B3042 is a direct-fit style replacement for select 1998-2002 Isuzu and Honda vehicles, including 2002 Isuzu Axiom and 1998-2001 Honda Passport.

This part cross-references OE numbers 8971263040 and 8972557420 for the same application.

What It Helps Fix

• Hard brake pedal feel
• Reduced brake assist from a failing vacuum booster
• Inconsistent pedal response during braking
• Vacuum seal loss in the brake booster assembly
• Brake system performance issues tied to booster wear

Installation Notes and Tips

Verify the master cylinder stud thread size, mounting stud layout, and diaphragm diameter before installation. This booster does not include the master cylinder, brake pedal rod extension, mounting bracket, gasket, or front seal, so reuse or source the required related components as needed. Confirm vacuum hose routing and inspect the brake system for leaks before returning the vehicle to service.

Quality Assurance

MPA Electrical remanufactures this brake booster with replacement and treated components, then subjects each unit to 100% end-of-line testing using proprietary test equipment to confirm vacuum seal and pressure-transfer performance.

Compatible With 2002 Isuzu Axiom, 1998-2001 Honda Passport, 1998-2001 Isuzu Rodeo, 2001 Isuzu Rodeo Sport, and 1998-2000 Isuzu Amigo.