MPA Electrical NM4225 Brake Master Cylinder

Brake Master Cylinder for Corolla

Restore consistent brake pedal response with this MPA Electrical brake master cylinder for the 2009-2013 Toyota Corolla with front disc brakes. Part number NM4225 is a standard replacement built with an aluminum body, plastic reservoir, and included cap, reservoir, and seal for a direct hydraulic service replacement.

Key Features

• Fits 2009-2013 Toyota Corolla, new with front disc brakes
• Brake master cylinder with 0.876 bore diameter
• Aluminum master cylinder construction with plastic reservoir
• Reservoir, cap, and gasket/seal included
• Uses DOT 3 brake fluid
• Two mounting holes with 0.350 mounting hole diameter
• Standard replacement grade for brake hydraulic service

Product Details

MPA Electrical NM4225 is engineered as a brake master cylinder replacement for Corolla brake hydraulic repair. It is built to restore hydraulic pressure at the master cylinder and support normal brake system operation on 2009-2013 Toyota Corolla models equipped with front disc brakes. The aluminum housing, plastic reservoir, and 0.876 bore diameter align with the specifications needed for this application, while the included cap, reservoir, and seal help complete the service. MPA Electrical tests each unit against OE specifications using controlled processes and sample-based validation to support consistent performance out of the box. This part cross-references Monroe Shocks & Struts (e.g., 172286) for the same application.

Common Problems This Part Can Address

• Low or inconsistent brake pedal feel
• Internal master cylinder leakage
• Brake fluid loss at the hydraulic unit
• Reduced braking response during normal driving
• Brake warning symptoms tied to master cylinder wear

Installation Notes

Confirm vehicle fitment before installation: Fits 2009-2013 Toyota Corolla, front disc brakes. Bench bleed the master cylinder before connecting brake lines, then bleed the full brake system after installation. Use DOT 3 brake fluid only, and inspect the booster, lines, and fittings for wear or contamination before returning the vehicle to service. Mounting hardware, push rod, brake booster, sensor, and brake pressure switch are not included.

Quality Assurance

MPA Electrical validates brake master cylinders against OE specifications using proprietary testing processes and strict protocols. NM4225 is a new standard replacement part built to support dependable brake hydraulic performance for the Toyota Corolla application listed above.