MPA Electrical NM4093 Brake Master Cylinder

Brake Master Cylinder for Cobalt, G5, and Pursuit

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM4093. It is a standard replacement unit for front disc brake applications on select Chevrolet Cobalt, Pontiac G5, and Pontiac Pursuit models.

Built with an aluminum master cylinder body, plastic reservoir, and included reservoir cap and seals, this replacement master cylinder is engineered to match OE specifications for dependable hydraulic performance. It uses DOT 3 brake fluid and features a 0.875-inch bore diameter for the listed applications.

Key Features

• Brand: MPA Electrical
• Part number: NM4093
• Standard replacement brake master cylinder
• Aluminum master cylinder construction
• Plastic reservoir included
• Master cylinder cap included
• Gasket or seal included
• 0.875-inch bore diameter
• 2 mounting holes with 0.363-inch mounting hole diameter
• Uses DOT 3 brake fluid
• New condition

Product Details

MPA Electrical NM4093 is a brake master cylinder built for vehicles equipped with front disc brakes. The unit is tested against OE specifications using controlled validation processes to help ensure consistent hydraulic performance after installation. This part cross-references Monroe Shocks & Struts (e.g., 19209274, 22721986) for the same application.

Compatible With 2005-2008 Chevrolet Cobalt, 2007-2008 Pontiac G5, and 2005-2006 Pontiac Pursuit with front disc brakes. If you are replacing a worn or leaking master cylinder on a Chevrolet Cobalt, Pontiac G5, or Pontiac Pursuit, NM4093 provides the core hydraulic component needed to restore brake system operation.

What It Helps Fix

• Low or inconsistent brake pedal feel
• Brake fluid leakage at the master cylinder
• Internal hydraulic bypass causing pedal drop
• Reduced braking response from a worn bore or seals
• Brake warning symptoms tied to master cylinder wear

Installation Notes

Before installation, confirm the vehicle is equipped with front disc brakes and verify bore size, mounting hole layout, and fluid type. Bench bleeding the master cylinder before final installation helps remove trapped air from the hydraulic circuit. Inspect brake lines, fittings, and the booster interface for wear or contamination before connecting the replacement unit.

Quality Assurance

MPA Electrical uses OE sample data and strict testing protocols to validate brake master cylinders against original specifications. That process supports consistent fit and braking performance for the listed Chevrolet Cobalt, Pontiac G5, and Pontiac Pursuit applications.