MPA Electrical M55129 Brake Master Cylinder

Brake Master Cylinder for Civic, RSX, and EL

Restore consistent brake pedal response with this remanufactured brake master cylinder from MPA Electrical. Built as a standard replacement for front disc brake applications, M55129 is engineered for 2001-2005 Honda Civic, 2001-2005 Acura EL, and 2002-2006 Acura RSX models.

MPA Electrical remanufactured brake master cylinders are tested against OE specifications using controlled processes and an OE sample library, helping deliver reliable hydraulic performance right out of the box. This M55129 unit is a direct-fit brake hydraulics replacement for drivers servicing Honda Civic, Acura EL, or Acura RSX brake system concerns.

Key Features

• Remanufactured brake master cylinder
• Standard replacement grade
• 0.875 in. bore diameter
• Aluminum master cylinder body
• Gasket or seal included
• Uses DOT 3 or DOT 4 brake fluid
• Two mounting holes with 0.36 in. mounting hole diameter
• Compatible with front disc brake applications

Detailed Description

MPA Electrical M55129 is a reman brake master cylinder designed to restore hydraulic braking performance on select Honda and Acura platforms. It is built with an aluminum housing and a 0.875-inch bore, and it includes a gasket or seal for service replacement. This unit does not include a reservoir, cap, push rod, brake booster, sensor, pressure switch, or mounting hardware, so existing components should be verified before installation. For fitment-specific searches, this part is commonly referenced as a brake master cylinder for 2001-2005 Honda Civic, 2001-2005 Acura EL, and 2002-2006 Acura RSX with front disc brakes. Part number M55129 is also useful when cross-checking brake hydraulics listings for the same application.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Low or inconsistent brake pedal feel
• Internal master cylinder leakage
• Brake fluid loss at the hydraulic unit
• Uneven or delayed hydraulic brake response
• Service replacement for worn OE master cylinders

Installation Notes

Confirm front disc brake configuration before ordering. Inspect the brake booster, push rod, reservoir, and fluid lines for wear or contamination during service, since those components are not included with M55129. Bench bleeding is recommended before final installation, and the system should be filled with DOT 3 or DOT 4 brake fluid only. Verify mounting hole alignment and bleed the brake system thoroughly after installation on Honda Civic, Acura EL, or Acura RSX applications.

Quality Assurance

MPA Electrical remanufactures this master cylinder using OE reference data and testing protocols that check the unit against original specifications for consistent braking performance.