MPA Electrical NM2779 Brake Master Cylinder

Brake Master Cylinder for Astro and Safari

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 to match OE specifications for dependable hydraulic performance on the road.

MPA Electrical’s New with front disc brakes product line focuses on direct-fit brake hydraulic components for applications that require accurate bore sizing, reservoir fitment, and reliable fluid control. Part number NM2779 is a practical replacement choice for Chevrolet Astro and GMC Safari models in the listed fitment range.

• Brake master cylinder for 1996-2003 Chevrolet Astro, N/A, new with front disc brakes
• Brake master cylinder for 1996-2003 GMC Safari, N/A, new with front disc brakes
• 1.25 in. bore diameter for OE-style hydraulic output
• Aluminum master cylinder body with plastic reservoir
• Reservoir and cap included; DOT 3 fluid type
• Standard replacement grade for brake hydraulic service
• Two mounting holes with 0.425 in. mounting hole diameter

This brake master cylinder is used to address loss of hydraulic pressure, a soft or sinking brake pedal, uneven brake response, internal seal wear, and fluid leakage at the master cylinder. It is a direct replacement for service on Chevrolet Astro and GMC Safari brake systems that use front disc brakes.

Installation Notes

Verify brake booster, reservoir, and port alignment before installation. Bench bleed the master cylinder before connecting brake lines, then fill with DOT 3 brake fluid and bleed the system thoroughly to remove trapped air. Mounting hardware, gasket or seal, push rod, brake booster, sensor, and brake pressure switch are not included.

Quality Assurance

MPA Electrical tests each unit against OE specifications using controlled procedures and sample-based validation to help ensure consistent braking performance out of the box. This part cross-references Monroe Shocks & Struts (e.g., 18029952, 18047529) for the same application.