MPA Electrical B4249 Power Brake Booster

Overview

This remanufactured power brake booster is built for drivers who need consistent braking assist and a firm, predictable pedal feel. MPA Electrical B4249 is a standard replacement booster with a single diaphragm and metal housing, supplied without a master cylinder.

Key Features

• Standard replacement power brake booster for direct service use.
• Single-diaphragm design with an 11.12 in. (282.45 mm) diaphragm diameter.
• Metal housing with remanufactured components for vacuum seal and pressure transfer.
• 8 x 1.25 mm master cylinder stud thread size.
• 100% end-of-line tested with proprietary equipment.

Detailed Description

MPA Electrical B4249 is a remanufactured power brake booster engineered to restore braking assist in applications that require a booster without a master cylinder. The unit uses a single diaphragm and a metal housing, with treated replacement components intended to maintain vacuum integrity and reliable pressure transfer. This part cross-references Toyota 44610-0E080 for the same application. Fits 2014-2016 Toyota Highlander, N/A. Fits 2014-2016 Toyota Highlander, N/A.

Common Issues It May Address

• Hard brake pedal feel caused by reduced booster assist.
• Loss of vacuum seal within the brake booster assembly.
• Inconsistent braking response during normal pedal application.
• Replacement needs when the original booster is worn or no longer holds pressure.

Installation Notes

Verify master cylinder compatibility before installation, since this booster is supplied without a master cylinder. Confirm the 8 x 1.25 mm stud thread size and check that the mounting pattern matches the vehicle application. Mounting hardware, gasket or seal, and pedal rod extension are not included.

Quality Assurance

MPA Electrical subjects each unit to 100% end-of-line testing using proprietary test equipment. The remanufactured construction and standard replacement grade support consistent service performance for the brake system.