MPA Electrical NM55635 Brake Master Cylinder

Brake Master Cylinder for Nissan and INFINITI

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM55635. It is a standard replacement unit built with an aluminum body, a 1.063-inch bore, and a new seal for dependable hydraulic performance on select Nissan Pathfinder, INFINITI QX60, and INFINITI JX35 applications with front disc brakes.

MPA Electrical’s New with front disc brakes product line focuses on direct-fit brake hydraulic replacements for vehicles that use this specific brake configuration. This NM55635 master cylinder is engineered and tested against OE specifications using sample-based validation and controlled inspection processes to help deliver consistent braking performance after installation.

Key Features

• Standard replacement brake master cylinder
• Aluminum construction for OE-style fit and function
• 1.063-inch master cylinder bore diameter
• Gasket or seal included
• 2 mounting holes with 0.350-inch mounting hole diameter
• New condition replacement part
• Fits vehicles with front disc brakes

Detailed Description

MPA Electrical NM55635 is a brake master cylinder for hydraulic brake systems that need restored pedal feel and pressure delivery. It is built for 2013 INFINITI JX35, 2013-2020 Nissan Pathfinder, and 2014-2020 INFINITI QX60 applications noted as new with front disc brakes. This part number NM55635 cross-references 46010-3JA0A and 46010-3JA0C for the same application.

The aluminum master cylinder body helps maintain OE-style packaging, while the included seal supports proper hydraulic sealing during service. Because the reservoir, cap, push rod, brake booster, sensor, and pressure switch are not included, this replacement is intended for reuse of the vehicle’s existing related components where applicable.

What It Helps Address

• Low or inconsistent brake pedal pressure
• Internal hydraulic leakage in the master cylinder
• Brake fluid bypass that affects pedal hold
• Uneven braking response after master cylinder wear
• Service replacement for front-disc-brake hydraulic systems

Installation Notes and Tips

Verify the vehicle’s brake configuration before installation, especially front disc brake application and bore size. Transfer or source any components not included with the unit, including the reservoir, cap, push rod, brake booster interface parts, and sensors if required by the vehicle. Bench bleeding and a full brake system bleed are recommended after installation to remove trapped air and restore proper pedal feel.

Quality Assurance

MPA Electrical tests each unit against OE specifications using proprietary inspection processes and strict validation protocols. That approach is used to help ensure consistent braking performance right out of the box for the specified Nissan and INFINITI applications.