MPA Electrical NM52550 Brake Master Cylinder

Brake Master Cylinder for Nissan 240SX

Restore consistent brake pedal response with this MPA Electrical brake master cylinder for the 1989-1994 Nissan 240SX with front disc brakes. Part number NM52550 is a standard replacement unit built with an aluminum body, plastic reservoir, and included cap and seal for a direct hydraulic service replacement.

Key Features

• Fits 1989-1994 Nissan 240SX, front disc brakes
• Standard replacement brake master cylinder
• Aluminum master cylinder body with plastic reservoir
• 0.938 in. bore diameter for hydraulic system service
• Reservoir, cap, and gasket/seal included
• Uses DOT 3 brake fluid
• MPA Electrical part number NM52550

Product Details

MPA Electrical NM52550 is engineered as a brake master cylinder replacement for Nissan 240SX models equipped with front disc brakes. The unit is tested against OE specifications using sample-based validation and controlled inspection processes to help deliver consistent braking performance after installation. The aluminum construction supports durability, while the plastic reservoir and included cap provide a complete hydraulic service component for the master cylinder assembly. This part number NM52550 is a practical choice when servicing the brake hydraulics on a Nissan 240SX from 1989 through 1994.

MPA Electrical’s New with front disc brakes product line focuses on application-specific brake hydraulic components for vehicles that require OE-style fitment and function. For Nissan 240SX brake master cylinder replacement needs, NM52550 is built to match the listed configuration and fluid requirements.

Common Problems This Part Can Address

• Low or inconsistent brake pedal feel
• Internal master cylinder seal wear
• Brake fluid leakage at the master cylinder
• Reduced hydraulic pressure in the brake system
• Brake performance loss on front disc brake applications

Installation Notes and Tips

Before installation, confirm the vehicle is a 1989-1994 Nissan 240SX with front disc brakes and verify the 2-hole mounting pattern, 0.355 in. mounting hole diameter, and 0.938 in. bore size. Mounting hardware, brake booster, push rod, sensor, and brake pressure switch are not included. Bench bleeding the master cylinder before final installation helps remove trapped air and supports proper pedal feel. Use DOT 3 brake fluid and inspect the brake lines, reservoir connections, and seals during service.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using proprietary procedures and strict inspection protocols to support consistent performance out of the box. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.