MPA Electrical NM55514 Brake Master Cylinder

Brake Master Cylinder for Infiniti FX35 FX45

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM55514. Built as a standard replacement for 2003-2008 Infiniti FX35 and FX45 models with front disc brakes, it is engineered to return braking performance to OE-style operation.

MPA Electrical’s New with front disc brakes product line focuses on direct-fit hydraulic brake components for vehicles that use front disc brake configurations. This NM55514 master cylinder is a new aluminum unit with a plastic reservoir, reservoir cap included, and a 1.0-inch bore for proper hydraulic pressure delivery.

• Fits 2003-2008 Infiniti FX35, N/A, New with front disc brakes
• Fits 2003-2008 Infiniti FX45, N/A, New with front disc brakes
• Standard replacement brake master cylinder
• Aluminum master cylinder body with plastic reservoir
• 1.0-inch bore diameter
• DOT 3 fluid type
• Reservoir and master cylinder cap included
• 2 mounting holes with 0.370-inch mounting hole diameter

Detailed Product Overview

The NM55514 brake master cylinder is designed for Infiniti FX35 and Infiniti FX45 applications that require a front disc brake setup. It uses a 1.0-inch bore diameter and aluminum construction to support hydraulic brake pressure, while the included reservoir and cap help simplify replacement of the original unit. This part number NM55514 is a direct-fit hydraulic brake solution for drivers addressing worn or leaking master cylinder components on 2003-2008 Infiniti FX35 and FX45 vehicles.

This part cross-references OE numbers 46010-CG000 and 46010-CG001 for the same application.

Common Problems It Can Help Solve

• Low or inconsistent brake pedal feel
• External brake fluid leakage at the master cylinder
• Internal hydraulic bypass causing pedal drop
• Brake warning concerns related to master cylinder wear
• Reduced braking response from an aging hydraulic unit

Installation Notes and Tips

Before installation, verify the vehicle is a 2003-2008 Infiniti FX35 or FX45 with front disc brakes and confirm the OE part number match. Bench bleeding the master cylinder before installation helps remove trapped air from the hydraulic system. Use DOT 3 brake fluid only, and inspect brake lines, fittings, and the booster interface for wear or contamination during replacement.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using controlled processes and strict inspection protocols. The goal is consistent hydraulic performance out of the box for Infiniti FX35 and FX45 brake system service.