MPA Electrical NM55413 Brake Master Cylinder

Brake Master Cylinder for Mazda 6

Restore consistent brake pedal response with this MPA Electrical brake master cylinder for the 2009-2013 Mazda 6 with front disc brakes. Part number NM55413 is a standard replacement unit built with an aluminum body and a 0.875-inch bore for direct hydraulic performance restoration.

MPA Electrical’s New with front disc brakes product line focuses on replacement brake hydraulics for vehicles that need OE-style fit and function. This master cylinder is tested against OE specifications using controlled processes and sample-based reference data to help deliver reliable braking performance after installation.

Key Features

• Fits 2009-2013 Mazda 6, front disc brakes
• Part number NM55413
• Standard replacement brake master cylinder
• Aluminum construction
• 0.875-inch master cylinder bore diameter
• Gasket or seal included
• Uses DOT 3 brake fluid
• Two mounting holes with 0.355-inch mounting hole diameter

Detailed Description

This brake master cylinder is engineered for the Mazda 6 braking system and is intended to restore hydraulic pressure at the master cylinder after wear, leakage, or internal bypass issues. The aluminum housing helps keep the unit lightweight, while the included gasket or seal supports a proper sealing interface during replacement. NM55413 is a direct-fit style brake hydraulics component for 2009, 2010, 2011, 2012, and 2013 Mazda 6 models with front disc brakes.

This part cross-references Monroe Shocks & Struts (e.g., GSYL4340Z) for the same application.

What It Helps Fix

• Low or inconsistent brake pedal feel
• Brake fluid leakage at the master cylinder
• Internal hydraulic bypass causing reduced braking response
• Pedal travel that increases over time
• Brake performance loss from a worn original master cylinder

Installation Notes and Tips

Before installation, confirm the vehicle is a 2009-2013 Mazda 6 with front disc brakes and verify the bore size and mounting pattern match the original unit. Transfer any required external components from the vehicle as needed, since the reservoir, push rod, brake booster, and mounting hardware are not included. Bleed the brake system thoroughly with DOT 3 fluid after installation to remove air from the hydraulic circuit.

Quality Assurance

MPA Electrical tests each master cylinder against OE specifications using proprietary processes and strict protocols to support consistent braking performance out of the box. Part number NM55413 is a new replacement brake master cylinder built for dependable hydraulic restoration in the Mazda 6 platform.