MPA Electrical NM55075 Brake Master Cylinder

Brake Master Cylinder for Pathfinder and QX4

Restore consistent brake pedal response with this new brake master cylinder from MPA Electrical. Built as a standard replacement for vehicles with front disc brakes, it is engineered for direct hydraulic performance on the 1996-2001 Nissan Pathfinder and 1997-2001 INFINITI QX4.

Part number NM55075 is built with an aluminum master cylinder body, a plastic reservoir, and a 1-inch bore diameter. It includes the reservoir, cap, and gasket or seal, and it uses DOT 3 brake fluid.

Key Features

• Brand: MPA Electrical
• Part number: NM55075
• Standard replacement brake master cylinder
• Aluminum master cylinder construction
• Plastic reservoir with cap included
• 1-inch bore diameter
• Gasket or seal included
• Designed for vehicles with front disc brakes
• Compatible with DOT 3 brake fluid
• Fits 1996-2001 Nissan Pathfinder, N/A, new with front disc brakes
• Fits 1997-2001 INFINITI QX4, N/A, new with front disc brakes

Product Details

MPA Electrical NM55075 is a brake master cylinder built to restore hydraulic braking performance by matching OE specifications through tested manufacturing processes and strict inspection protocols. The aluminum housing and integrated reservoir support dependable brake fluid delivery, while the 1-inch bore helps maintain the pedal feel expected for the listed applications. This part number NM55075 is a direct-fit replacement for Nissan Pathfinder and INFINITI QX4 models equipped with front disc brakes.

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

Common Problems It Can Help Solve

• Low or sinking brake pedal
• Brake fluid leakage at the master cylinder
• Uneven or inconsistent hydraulic brake pressure
• Delayed brake response after pedal application
• Internal seal wear affecting braking performance

Installation Notes

Before installation, confirm the vehicle is equipped with front disc brakes and verify bore size, mounting hole layout, and reservoir configuration against the original unit. Bench bleeding the master cylinder before final installation helps remove trapped air from the hydraulic system. Use DOT 3 brake fluid only, and inspect the brake booster, lines, and fittings for wear or contamination during service.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using proprietary processes and strict protocols to support consistent braking performance out of the box.