MPA Electrical NM55369 Brake Master Cylinder

Brake Master Cylinder for OE-Style Stopping Power

MPA Electrical NM55369 is a standard replacement brake master cylinder built for restoring hydraulic brake performance. It uses a 1-inch bore, cast iron construction, and a new seal to support consistent pedal response in the brake system.

For drivers searching for a brake master cylinder for front disc brake applications, NM55369 is a direct-fit style replacement that follows OE specifications through tested manufacturing processes. It is a practical choice for brake master cylinder replacement on vehicles using the same application, including Chrysler, Dodge, and Jeep platforms referenced by the interchange data.

Key Features

• Standard replacement brake master cylinder
• 1-inch master cylinder bore diameter
• Cast iron master cylinder body
• Gasket or seal included
• 2 mounting holes
• New product condition
• Brand line: New with front disc brakes

Product Details

The MPA Electrical NM55369 brake master cylinder is engineered to restore braking performance by maintaining proper hydraulic pressure in the brake system. Its cast iron construction supports durability, while the 1-inch bore size helps match the original hydraulic characteristics for the intended application. This part number, NM55369, is listed with OE cross-reference numbers 0004316301 and 05103638AA / 5103638AA for the same application.

The brand line, New with front disc brakes, identifies this unit as part of a front disc brake application family. If you are replacing a worn master cylinder on a Chrysler, Dodge, or Jeep vehicle that uses this OE-style configuration, NM55369 provides a focused replacement option built to OE specifications.

What It Helps Fix

• Low or inconsistent brake pedal feel
• Internal hydraulic leakage in the master cylinder
• Brake fluid loss at the cylinder seals
• Uneven hydraulic pressure delivery to the brake system
• Brake performance decline from a worn master cylinder

Installation Notes and Tips

Verify bore diameter, mounting hole layout, and brake system configuration before installation. This master cylinder does not include mounting hardware, reservoir, push rod, brake booster, or sensor components, so reuse or source the correct related parts as needed. Bench bleeding is recommended before final installation to help remove trapped air from the hydraulic circuit.

For Chrysler, Dodge, and Jeep brake master cylinder replacement work, confirm the OE cross-reference and vehicle-specific brake setup before installation. NM55369 is intended for applications that match the listed OE-style specifications.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using controlled processes and strict inspection protocols. That approach helps ensure consistent braking performance out of the box for NM55369.