MPA Electrical B3000 Power Brake Booster

Remanufactured Vacuum Brake Booster for Toyota

MPA Electrical B3000 is a remanufactured vacuum power brake booster built for Toyota braking systems that need consistent assist and a firm pedal feel. It is engineered for 1989-1995 Toyota 4Runner, 1989-1995 Toyota Pickup, and 1993-1994 Toyota T100 applications.

The MPA Electrical Reman Vac Pwr Brake Booster w/o Master Cyl line focuses on replacement boosters that restore vacuum-assisted braking performance without including the master cylinder. This B3000 unit uses a metal housing, a 9.75-inch (247.65 mm) diaphragm, and a 2-stud mounting layout with 8 x 1.25 mm master cylinder stud threads.

Key Features

• Remanufactured power brake booster for vacuum brake systems
• Standard replacement brake service grade
• Metal housing construction
• 9.75 in. / 247.65 mm diaphragm diameter
• 2 mounting studs
• 8 x 1.25 mm master cylinder stud thread size
• Master cylinder not included
• Brake pedal rod extension not included
• Gasket or seal not included
• Mounting bracket not included

Product Details

MPA Electrical B3000 is a reman vacuum brake booster designed to deliver braking assist with reduced pedal effort in Toyota 4Runner, Toyota Pickup, and Toyota T100 applications. The booster is remanufactured and tested as a standard replacement part, with new replacement and specially treated internal components used to support vacuum sealing and pressure transfer. Each unit is 100% end-of-line tested with proprietary equipment before release.

This part cross-references OE numbers such as 446103D330 and 446103D470 for the same application.

Common Brake Issues It Can Address

• Hard brake pedal feel
• Reduced vacuum assist during braking
• Inconsistent pedal response
• Brake booster vacuum leakage
• Loss of braking assist after booster wear

Installation Notes

• Verify fitment by year, make, and model before installation.
• Confirm the 2-stud mounting pattern and 8 x 1.25 mm master cylinder stud thread size.
• Transfer or source any required components not included with the booster, including the master cylinder and seals.
• Inspect vacuum lines, pedal linkage, and mounting surfaces during replacement.
• Fits 1989-1995 Toyota 4Runner, N/A; 1989-1995 Toyota Pickup, N/A; and 1993-1994 Toyota T100, N/A.

Quality Assurance

MPA Electrical remanufactures brake boosters with treated replacement components and end-of-line testing to verify performance before shipment. The B3000 is built as a remanufactured standard replacement part for Toyota brake service applications.