MPA Electrical NM1927 Brake Master Cylinder

Brake Master Cylinder for Front Disc Brake Applications

The MPA Electrical NM1927 brake master cylinder is a standard replacement hydraulic component for select Chevrolet, Pontiac, and Pontiac Acadian applications with front disc brakes. Built with a cast iron body, integral reservoir, and a 0.875-inch bore, it is engineered to restore consistent brake pedal response and hydraulic pressure.

Compatible With 1983-1987 Chevrolet Chevette, 1983-1987 Pontiac Acadian, and 1983-1987 Pontiac T1000, this NM1927 master cylinder is a direct-fit service part for vehicles listed with front disc brake configurations.

Key Features

• Brand: MPA Electrical
• Part number: NM1927
• Brake master cylinder, standard replacement grade
• Cast iron master cylinder construction
• Integral reservoir with reservoir included
• 0.875-inch bore diameter
• Push rod included
• Master cylinder cap included
• Uses DOT 3 brake fluid
• Two mounting holes with 0.365-inch mounting hole diameter

Product Details

MPA Electrical’s NM1927 is built from OE sample references and tested against OE specifications using controlled validation processes. The result is a brake master cylinder intended to deliver consistent hydraulic performance after installation. This part cross-references Monroe Shocks & Struts (e.g., 18009656, 18014704) for the same application.

The MPA Electrical New with front disc brakes product line focuses on replacement parts for vehicles equipped with front disc brake systems. For this application, the NM1927 supports the hydraulic side of the braking system with an integral reservoir, included cap, and included push rod, while omitting unnecessary extras such as a brake booster or pressure switch.

What It Helps Fix

• Low or inconsistent brake pedal pressure
• Internal hydraulic leakage in the master cylinder
• Brake fluid loss at the master cylinder body
• Soft or sinking pedal feel during braking
• Reduced braking performance on front disc brake vehicles

Installation Notes and Tips

Verify bore size, mounting hole spacing, and brake system configuration before installation. This NM1927 master cylinder is specified for vehicles with front disc brakes and should be matched to the listed Chevrolet Chevette, Pontiac Acadian, and Pontiac T1000 applications. Bench bleeding the master cylinder before final installation helps remove trapped air from the hydraulic circuit and supports proper pedal feel after service.

Quality Assurance

MPA Electrical tests each unit against OE specifications using proprietary processes and strict protocols to help ensure consistent braking performance out of the box. The NM1927 is a new replacement part built to standard replacement requirements for the listed applications.