MPA Electrical NM4226 Brake Master Cylinder

Brake Master Cylinder for Toyota Corolla and Matrix

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM4226. It is a standard replacement unit for select Toyota Corolla and Toyota Matrix applications with front disc brakes, built with an aluminum body, plastic reservoir, and DOT 3 fluid compatibility.

MPA Electrical’s New with front disc brakes product line focuses on direct-fit hydraulic replacement parts for vehicles that need dependable braking performance after master cylinder wear or internal seal failure. This NM4226 master cylinder is engineered to match OE specifications using tested production processes for consistent operation out of the box.

Key Features

• Part number NM4226 brake master cylinder
• Fits 2009 Toyota Corolla, N/A, New with front disc brakes
• Fits 2011-2012 Toyota Corolla, N/A, New with front disc brakes
• Fits 2009 Toyota Matrix, N/A, New with front disc brakes
• Aluminum master cylinder body with plastic reservoir
• 0.815 bore diameter for OE-style hydraulic performance
• Reservoir and cap included
• Gasket or seal included
• Standard replacement grade
• DOT 3 brake fluid type

Detailed Description

This brake master cylinder is built for Toyota Corolla and Toyota Matrix models equipped with front disc brakes, including 2009 Corolla, 2011-2012 Corolla, and 2009 Matrix applications. The NM4226 uses a 0.815-inch bore diameter, two mounting holes, and an aluminum master cylinder housing with a plastic reservoir to support proper hydraulic pressure transfer in the brake system. The reservoir, cap, and seal are included, while mounting hardware, push rod, brake booster, and brake pressure switch are not included.

This part cross-references Toyota 4720112B20 and 4720102490 for the same application.

Common Problems This Part Can Address

• Low or sinking brake pedal caused by internal master cylinder wear
• Brake fluid leakage at the master cylinder body or reservoir area
• Uneven hydraulic pressure affecting braking response
• Soft pedal feel after brake system component deterioration
• Loss of braking consistency in Corolla or Matrix front disc brake setups

Installation Notes and Tips

Before installation, confirm the vehicle is listed in the fitment data and verify the brake system configuration matches the front disc brake application. Bench bleeding the master cylinder before installation helps remove trapped air and supports proper pedal feel. Inspect the brake lines, booster interface, and fluid condition during replacement, and use DOT 3 brake fluid only.

Quality Assurance

MPA Electrical tests each master cylinder against OE specifications using controlled processes and strict inspection protocols to help ensure consistent braking performance. This NM4226 is a new standard replacement part built to restore hydraulic function for the specified Toyota Corolla and Toyota Matrix applications.