MPA Electrical NM55154 Brake Master Cylinder

Brake Master Cylinder for Kia and Hyundai

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 NM55154 is engineered for direct service on select Kia Magentis, Kia Optima, and Hyundai Sonata models.

Key Features

• Brand: MPA Electrical
• Part Number: NM55154
• Brake master cylinder for brake hydraulics service
• Aluminum master cylinder body with plastic reservoir
• Reservoir included with cap included
• 0.938 in. bore diameter
• Uses DOT 3 or DOT 4 brake fluid
• Standard replacement grade
• New condition

Product Details

MPA Electrical NM55154 is a brake master cylinder built to restore hydraulic braking performance. The unit is tested against OE specifications using proprietary processes and strict protocols, drawing from an OE sample library to help deliver consistent braking performance out of the box. This master cylinder is configured for vehicles with front disc brakes and is listed for 1999-2006 Hyundai Sonata, 2001-2006 Kia Optima, and 2001-2006 Kia Magentis applications, including the 2005 Kia Magentis non-ABS listing.

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

What It Helps Fix

• 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
• Service replacement needs on worn hydraulic components

Installation Notes

• Verify vehicle fitment by year, make, model, and brake configuration before installation.
• Mounting hardware, push rod, brake booster, and seals are not included.
• Reservoir and cap are included; use the correct DOT 3 or DOT 4 fluid specified for the vehicle.
• Bleed the brake system thoroughly after installation to remove air from the hydraulic circuit.
• Confirm bore size and mounting hole alignment match the original unit before final assembly.

Quality Assurance

MPA Electrical tests each master cylinder against OE specifications to support consistent hydraulic performance and reliable brake pedal operation. Part Number NM55154 is a new, standard replacement component for service work on select Kia and Hyundai front disc brake applications.