MPA Electrical NM55651 Brake Master Cylinder

Brake Master Cylinder for Mazda CX-5

Restore consistent brake pedal response with this MPA Electrical brake master cylinder for the Mazda CX-5. Built as a standard replacement for front disc brake applications, Part Number NM55651 is engineered to match OE specifications for dependable hydraulic performance.

The NM55651 master cylinder features an aluminum body, a 0.814 bore diameter, an integrated reservoir, a cap, and a seal/gasket. It uses DOT 3 brake fluid and is supplied as a new unit for 2013-2025 Mazda CX-5 models with front disc brakes.

Key Features

• Brand: MPA Electrical
• Part Number: NM55651
• Standard replacement brake master cylinder
• Aluminum construction for OE-style fit and function
• 0.814 bore diameter
• Reservoir, cap, and gasket/seal included
• 2 mounting holes with 0.357 mounting hole diameter
• Uses DOT 3 brake fluid
• New condition

Product Details

MPA Electrical brake master cylinders are built using OE sample references and tested to strict specifications to help deliver consistent braking performance after installation. This NM55651 unit is a direct hydraulic replacement for the Mazda CX-5 platform and is listed for 2013-2025 Mazda CX-5, front disc brakes. If you are searching for a Mazda CX-5 brake master cylinder replacement, NM55651 provides the core hydraulic components needed to restore pedal feel and braking response.

This part cross-references KDY3-43-40ZA for the same application.

What This Part Helps Address

• Low or inconsistent brake pedal feel
• Internal hydraulic leakage in the master cylinder
• Brake fluid loss at the master cylinder assembly
• Reduced braking response in front disc brake systems
• Wear-related hydraulic performance decline

Installation Notes and Tips

Before installation, confirm the vehicle is a 2013-2025 Mazda CX-5 with front disc brakes and verify the bore size and mounting points match the original unit. Transfer any required external components not included with the cylinder, and bleed the brake system thoroughly after installation using DOT 3 brake fluid. Clean all mating surfaces and inspect brake lines for wear or contamination before reassembly.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using controlled processes and reference samples to support consistent out-of-box performance. Part Number NM55651 is a new standard replacement brake master cylinder for Mazda CX-5 applications.