MPA Electrical NM1872 Brake Master Cylinder

Brake Master Cylinder for GM Trucks and Suburban

Restore consistent brake pedal response with this new brake master cylinder from MPA Electrical. Built as a standard replacement for front disc brake applications, Part Number NM1872 is engineered for direct-fit service on select Chevrolet and GMC trucks and Suburban models.

MPA Electrical uses OE sample references and testing protocols to verify each unit against original specifications, helping deliver dependable braking performance right out of the box. This NM1872 master cylinder includes an integral reservoir, a cap, and a 1.25-inch bore diameter with DOT 3 fluid compatibility.

Key Features

• Brand: MPA Electrical
• Part Number: NM1872
• Brake master cylinder for front disc brake applications
• Standard replacement grade
• Cast iron master cylinder construction
• Integral reservoir design with reservoir included
• Master cylinder cap included
• 1.25-inch bore diameter
• DOT 3 brake fluid type
• New condition

Product Details

MPA Electrical NM1872 is a brake master cylinder for Chevrolet and GMC vehicles equipped with front disc brakes. It is listed for 1981-1991 applications including Chevrolet C20, K20, R20, R2500, V20, V2500, C20 Suburban, K20 Suburban, R10 Suburban, R20 Suburban, V10 Suburban, V20 Suburban, R1500 Suburban, V1500 Suburban, R2500 Suburban, and GMC C2500, K2500, R1500 Suburban, R1500 Suburban, R2500 Suburban, V1500 Suburban, V2500, and V2500 Suburban models. The cast iron body and integral reservoir support a factory-style hydraulic layout for vehicles using DOT 3 brake fluid.

This part cross-references GM OE-style numbers 18008068 and 18010748 for the same application. Part Number NM1872 is a practical replacement choice when servicing a worn or leaking master cylinder on compatible Chevrolet and GMC brake systems.

Common Problems This Part Can Address

• Low or inconsistent brake pedal feel
• External brake fluid leakage at the master cylinder
• Internal bypass causing pedal fade
• Reduced hydraulic pressure to the brake system
• Brake warning symptoms related to master cylinder wear

Installation Notes and Tips

Verify vehicle brake configuration before ordering, since this master cylinder is listed for models with front disc brakes. Confirm the 2-bolt mounting pattern, 1.25-inch bore size, and DOT 3 fluid requirement during service. Bench bleeding is recommended before installation to help remove trapped air from the hydraulic circuit. Mounting hardware, push rod, brake booster, seals, and brake pressure switch are not included.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using controlled inspection and validation processes based on its OE sample library. That process is intended to support consistent hydraulic performance and proper fitment for the listed Chevrolet and GMC applications.