MPA Electrical B4215 Power Brake Booster

Overview

MPA Electrical B4215 is a remanufactured power brake booster built for vehicles that need consistent vacuum assist and a lighter pedal feel. It is a standard replacement unit with a metal housing and an 11.14-inch diaphragm for dependable braking support.

Key Features

• Remanufactured standard replacement brake booster
• Metal housing for durable construction
• 11.14-inch diaphragm for vacuum assist performance
• Master cylinder not included
• Brake pedal rod extension not included
• Mounting stud thread size: 8 x 1.25 mm

Detailed Description

The MPA Electrical B4215 power brake booster is engineered to deliver maximum braking assist with minimal pedal effort. It uses new replacement and specially treated components to support a strong vacuum seal and reliable pressure transfer, and each unit is end-of-line tested with proprietary equipment. This part cross-references Hyundai/Kia OE number 59110-C1300 for the same application. It fits 2016-2020 Kia Optima and 2015-2019 Hyundai Sonata, making it a direct match for common brake booster replacement needs on these platforms.

For Kia Optima and Hyundai Sonata brake service, B4215 provides a remanufactured solution that matches the original application requirements without including the master cylinder. The 2-stud mounting layout and 8 x 1.25 mm stud thread size support proper installation when replacing a worn or leaking booster.

What It Helps Solve

• Hard brake pedal feel caused by booster wear
• Reduced vacuum assist from a leaking diaphragm or seal
• Brake response issues related to pressure transfer loss
• Replacement needs after booster housing corrosion or internal failure
• Fitment-specific service for Kia Optima and Hyundai Sonata brake systems

Installation Notes

Fits 2016-2020 Kia Optima, N/A. Fits 2015-2019 Hyundai Sonata, N/A. Verify master cylinder compatibility before installation, since the master cylinder is not included. Confirm the 8 x 1.25 mm stud thread size and mounting layout against the original unit before assembly.

Quality Assurance

MPA Brake Boosters are tested for vacuum seal integrity, pressure transfer, and braking assist performance. Each unit undergoes 100% end-of-line testing using proprietary equipment before release.