MPA Electrical NM51850 Brake Master Cylinder

Brake Master Cylinder for Honda Front Disc Brake Applications

The MPA Electrical NM51850 brake master cylinder is a standard replacement for select Honda models with front disc brakes. It restores hydraulic pressure for consistent pedal response and is built with an aluminum master cylinder body, plastic reservoir, and included cap for a direct service replacement.

Compatible With 1979-1983 Honda Prelude, 1980-1983 Honda Civic, and 1980-1981 Honda Accord with front disc brakes. The NM51850 is engineered to match OE specifications using tested processes and strict inspection protocols for dependable braking performance after installation.

Key Features

• Standard replacement brake master cylinder for hydraulic brake service
• Aluminum master cylinder construction with plastic reservoir
• 0.813 in. bore diameter for OE-style brake system operation
• Reservoir and master cylinder cap included
• 2 mounting holes with 0.36 in. mounting hole diameter
• New condition replacement for front disc brake applications
• Part number NM51850 for easy identification

Detailed Description

MPA Electrical NM51850 is a brake master cylinder built for Honda vehicles equipped with front disc brakes. It is intended for 1979-1983 Honda Prelude, 1980-1983 Honda Civic, and 1980-1981 Honda Accord applications, making it a focused choice for drivers restoring brake hydraulic performance on these platforms. The aluminum body helps provide durable construction, while the plastic reservoir and included cap support a complete service-ready assembly.

MPA Electrical uses OE sample references and testing protocols to verify dimensional and functional consistency against original specifications. This helps ensure the master cylinder delivers proper fluid displacement and pedal feel for the listed Honda applications. If you are replacing a worn or leaking brake master cylinder on a Honda Civic, Prelude, or Accord with front disc brakes, NM51850 provides a direct-fit replacement path.

This part cross-references Honda OE numbers such as 46100SA0871 and 46100SA0872 for the same application.

What It Helps Fix

• Low or inconsistent brake pedal feel
• External brake fluid leakage from the master cylinder
• Loss of hydraulic pressure in the brake system
• Brake warning symptoms related to master cylinder wear
• Reduced braking response on front disc brake vehicles

Installation Notes and Tips

Verify the bore diameter, mounting hole layout, and reservoir configuration before installation. This master cylinder does not include mounting hardware, a brake booster, push rod, gasket or seal, sensor, or brake pressure switch. Bench bleeding is recommended before final installation, and the brake system should be inspected for fluid condition, line integrity, and proper adjustment after replacement.

Quality Assurance

MPA Electrical tests each unit against OE specifications using controlled processes and strict protocols to support consistent braking performance out of the box. The NM51850 is a new standard replacement part built for the listed Honda front disc brake applications.