MPA Electrical NM51652 Brake Master Cylinder

Brake Master Cylinder for Reliable Pedal Response

MPA Electrical NM51652 is a standard replacement brake master cylinder built to restore hydraulic braking performance. It is engineered with a 0.875-inch bore, cast iron construction, and an included reservoir and cap for a direct service replacement on compatible front disc brake applications.

For drivers searching for a brake master cylinder for Chevrolet and GMC front disc brake vehicles, NM51652 provides a practical OE-style replacement backed by testing against original specifications. It is a solid choice when replacing a worn master cylinder on a Chevrolet C10, Chevrolet K10, GMC C1500, or GMC K1500 application.

Key Features

• Standard replacement brake master cylinder
• 0.875-inch bore diameter for consistent hydraulic output
• Cast iron master cylinder body
• Reservoir and master cylinder cap included
• Two mounting holes with 0.453-inch mounting hole diameter
• New condition part for front disc brake applications
• Cross-references OE numbers 1330799 and 12058939 for the same application

Product Details

MPA Electrical’s NM51652 brake master cylinder is built from OE sample data and verified through testing protocols that check dimensional and functional consistency against original equipment specifications. The design focuses on restoring brake pedal feel and hydraulic pressure delivery in vehicles equipped with front disc brakes. This part number, NM51652, is a direct-fit style replacement for service work where the original master cylinder has worn internal seals, reduced pressure output, or fluid leakage.

The MPA Electrical New with front disc brakes line is aimed at replacement brake hydraulics that match the original application requirements without unnecessary extras. For Chevrolet C10 and GMC K1500 brake service, NM51652 supports a clean master cylinder replacement when the existing unit no longer maintains proper pedal firmness.

Common Problems This Part Can Help Address

• Low or sinking brake pedal
• External brake fluid leakage at the master cylinder
• Uneven or delayed hydraulic brake response
• Internal seal wear causing loss of pressure
• Brake system performance decline after master cylinder failure

Installation Notes and Tips

Verify bore size, mounting hole spacing, and reservoir configuration before installation. This master cylinder does not include mounting hardware, a brake booster, push rod, gasket or seal, sensor, or brake pressure switch. Bench bleeding is recommended before installation to help remove trapped air and support proper pedal feel after the system is reassembled.

Confirm the vehicle uses a front disc brake setup and match the original brake line connections and mounting pattern to the existing unit. NM51652 is commonly searched as a brake master cylinder for Chevrolet C10, GMC C1500, and related front disc brake truck applications.

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.