MPA Electrical NM4083 Brake Master Cylinder

Brake Master Cylinder for Front Disc Brake Applications

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM4083. It is a standard replacement master cylinder built with an aluminum body, plastic reservoir, and a 1-inch bore for vehicles equipped with front disc brakes.

Compatible with 2003-2007 Saturn Vue, 2005-2006 Chevrolet Equinox, and 2006 Pontiac Torrent, NM4083 is a direct-fit brake hydraulics replacement for common GM crossover applications. The reservoir is included, along with a cap and gasket/seal, to support a clean service installation.

Key Features

• Brake master cylinder for brake hydraulic service
• Aluminum master cylinder body with plastic reservoir
• 1-inch master cylinder bore diameter
• Standard replacement grade
• Reservoir, cap, and gasket/seal included
• Uses DOT 3 brake fluid
• Two mounting holes with 0.349-inch mounting hole diameter
• New condition

Product Details

MPA Electrical NM4083 is engineered to restore braking performance by replacing a worn or leaking master cylinder. The unit is tested against OE specifications using proprietary processes and strict protocols, helping deliver consistent brake pedal feel and hydraulic performance right out of the box. This part cross-references GM OE numbers 15892508 and 22707377 for the same application.

The MPA Electrical brand line, New with front disc brakes, identifies the application-specific configuration for vehicles equipped with front disc brakes. That makes NM4083 a focused replacement choice for Saturn Vue, Chevrolet Equinox, and Pontiac Torrent models within the listed years.

Common Problems This Part Can Help Solve

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

Installation Notes and Tips

• Verify vehicle fitment by year, make, model, and front disc brake configuration before installation.
• Bench bleed the master cylinder before connecting brake lines.
• Use fresh DOT 3 brake fluid during service.
• Inspect brake lines, fittings, and the booster interface for wear or contamination before reassembly.
• Mounting hardware, push rod, brake booster, sensor, and brake pressure switch are not included.

Quality Assurance

MPA Electrical tests each master cylinder against OE specifications using controlled validation processes and an OE sample library to support consistent hydraulic performance. NM4083 is a new standard replacement brake master cylinder built for dependable service in the listed Saturn, Chevrolet, and Pontiac applications.