MPA Electrical NM1730 Brake Master Cylinder

Brake Master Cylinder for Front Disc Brake Applications

Restore consistent brake pedal response with this new brake master cylinder from MPA Electrical. Part number NM1730 is built for front disc brake applications on select Chevrolet and GMC trucks and vans, including Chevrolet C20, C30, K20, K30, P20, P30, G30 and GMC G35/G3500 Van, P2500, P3500, G3500, and related models.

MPA Electrical’s New with front disc brakes line focuses on standard replacement brake hydraulics for vehicles that need OE-style fitment and dependable hydraulic performance. NM1730 is a cast iron master cylinder with an integral reservoir, a 1.25-inch bore, and a cap included for service-ready installation.

Key Features

• Part number NM1730 brake master cylinder
• Standard replacement grade for brake hydraulic service
• Cast iron master cylinder construction
• Integral reservoir design with reservoir included
• 1.25-inch master cylinder bore diameter
• Master cylinder cap included
• Uses DOT 3 brake fluid
• Two mounting holes with 0.416-inch mounting hole diameter
• New condition

Detailed Description

This brake master cylinder is engineered to restore braking performance by matching OE specifications through tested manufacturing processes and controlled inspection. The 1.25-inch bore size, integral reservoir, and cast iron body support stable hydraulic pressure for vehicles equipped with front disc brakes. NM1730 is a direct-fit style replacement for classic Chevrolet and GMC platforms where reliable brake pedal feel and consistent fluid delivery are important.

This part cross-references select OE and aftermarket numbers, including 2623214 and 5472452, for the same application. It is a practical choice for service work on Chevrolet C20, C30, K20, K30, P20, P30 and GMC P2500, P3500, G3500, and G35/G3500 Van brake systems.

What It Helps Address

• Low or inconsistent brake pedal response
• Internal master cylinder leakage
• Brake fluid bypass that reduces hydraulic pressure
• Spongy braking caused by worn master cylinder components
• Brake system service on front disc brake-equipped Chevrolet and GMC vehicles

Installation Notes and Tips

Verify vehicle application by year, make, model, and front disc brake configuration before installation. This master cylinder does not include mounting hardware, brake booster, push rod, gasket or seal, sensor, or brake pressure switch. Use DOT 3 brake fluid and bench bleed the master cylinder before connecting brake lines to help remove trapped air from the hydraulic circuit.

Confirm mounting hole spacing, bore size, and reservoir layout against the original unit on Chevrolet and GMC applications such as C20, K20, P30, and P3500 models. Proper bleeding of the full brake system is required after installation.

Quality Assurance

MPA Electrical tests each unit against OE specifications using proprietary processes and strict inspection protocols to help ensure consistent braking performance out of the box. NM1730 is a new standard replacement brake master cylinder built for dependable service on compatible Chevrolet and GMC front disc brake applications.