MPA Electrical NM1729 Brake Master Cylinder

Brake Master Cylinder for Front Disc Brake Applications

The MPA Electrical NM1729 brake master cylinder is a standard replacement part built to restore hydraulic braking performance. It is a new, cast iron master cylinder with an integral reservoir, a 0.945 bore diameter, and DOT 3 fluid compatibility for front disc brake systems.

For buyers searching for a brake master cylinder for front disc brake applications, NM1729 provides an OE-style replacement solution for vehicles that use a two-hole mounting pattern and an integral reservoir design. This part number is also referenced as NM1729 in catalog searches.

Key Features

• Brand: MPA Electrical
• Brand line: New with front disc brakes
• Part number: NM1729
• Standard replacement grade
• Cast iron master cylinder construction
• Integral reservoir included
• Master cylinder cap included
• 0.945 bore diameter
• Two mounting holes with 0.415 mounting hole diameter
• DOT 3 brake fluid type

Detailed Description

MPA Electrical engineers brake master cylinders to restore braking performance using OE sample data and testing protocols aligned to original specifications. The NM1729 is a new brake master cylinder for front disc brake systems, built with an integral reservoir and cast iron body for direct hydraulic replacement in the brake system. The included reservoir and cap simplify fluid service, while the standard replacement design supports consistent pedal response when the original master cylinder is worn or leaking. If you are sourcing NM1729 for a brake master cylinder replacement, this unit is built for vehicles that require a 0.945 bore and DOT 3 fluid.

This part cross-references 8127767 and 18004251 for the same application. Search terms such as front disc brake master cylinder, cast iron brake master cylinder, and NM1729 brake hydraulics replacement are commonly used by shoppers comparing this part for Chevrolet and GMC applications.

What It Helps Fix

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

Installation Notes and Tips

Confirm the vehicle uses a front disc brake master cylinder with a two-hole mounting pattern before installation. Bench bleeding the master cylinder before connecting brake lines helps remove trapped air and supports proper pedal feel. Use clean DOT 3 brake fluid and inspect the brake booster, lines, and fittings for wear or contamination during replacement. Verify bore size, mounting hole diameter, and reservoir style against the original unit before final assembly.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using controlled processes and strict inspection protocols. That approach supports consistent braking performance out of the box for Chevrolet and GMC brake hydraulic service applications.