MPA Electrical NM51934 Brake Master Cylinder

Brake Master Cylinder for Honda Civic, Accord, Prelude

Restore consistent brake pedal response with this new brake master cylinder from MPA Electrical. Built as a standard replacement for front disc brake applications, Part Number NM51934 is engineered for direct-fit service on select Honda Civic, Accord, and Prelude models.

MPA Electrical uses OE sample data and controlled testing to verify each unit against original specifications, helping deliver dependable braking performance after installation. This NM51934 master cylinder includes a reservoir, cap, gasket or seal, and a 0.8125-inch bore for the listed Honda applications.

Key Features

• Brand: MPA Electrical
• Part Number: NM51934
• Brake master cylinder for front disc brake vehicles
• Standard replacement grade
• Aluminum master cylinder body with plastic reservoir
• 0.8125-inch master cylinder bore diameter
• Reservoir, cap, and gasket or seal included
• Uses DOT 3 or DOT 4 brake fluid
• New condition

Product Details

This brake master cylinder is built for 1982-1985 Honda Accord, 1983 Honda Prelude, and 1984-1987 Honda Civic models with front disc brakes. It is a direct service replacement for hydraulic systems that need renewed pedal feel, stable fluid pressure, and reliable brake response. The NM51934 is also cross-referenced to Monroe Shocks & Struts 172286 and 182286 for the same application.

The aluminum housing and plastic reservoir provide a practical OE-style construction for routine brake repair. With two mounting holes and a 0.361-inch mounting hole diameter, this master cylinder is specified for the listed Honda brake system applications.

Common Issues This Part Can Address

• Low or inconsistent brake pedal feel
• Internal hydraulic leakage in the master cylinder
• Brake fluid loss at the cylinder or reservoir area
• Reduced braking response on front disc brake systems
• Need for a replacement master cylinder during brake service

Installation Notes and Tips

Before installation, confirm vehicle fitment by year, make, model, and front disc brake configuration. Transfer only the components required for your application, and verify that the brake system is clean and properly bled after installation. Use DOT 3 or DOT 4 brake fluid as specified for the vehicle.

This unit does not include a brake booster, push rod, mounting hardware, mounting bracket, sensor, or brake pressure switch. Check the existing brake lines, booster interface, and reservoir connections before final assembly. Part Number NM51934 should be matched to the vehicle’s original hydraulic setup for proper service.

Quality Assurance

MPA Electrical tests each master cylinder against OE specifications using proprietary processes and strict protocols based on a large OE sample library. That process supports consistent hydraulic performance and helps ensure the part is ready for service out of the box.