MPA Electrical M1642 Brake Master Cylinder

Brake Master Cylinder for Mercury Montego

Restore consistent brake pedal response with this remanufactured brake master cylinder from MPA Electrical. Built for 1968-1971 Mercury Montego applications with front disc brakes, M1642 is a standard replacement part engineered to match OE specifications for dependable hydraulic performance.

MPA Electrical’s reman with front disc brakes product line focuses on OE-style brake hydraulics for vehicles that need the correct master cylinder configuration. This unit uses a cast iron body, integral reservoir, and a 0.938 bore diameter, with DOT 3 fluid compatibility and a cap included for service convenience.

Key Features

• Fits 1968-1971 Mercury Montego, front disc brakes
• Remanufactured brake master cylinder
• Cast iron master cylinder construction
• Integral reservoir design with reservoir included
• 0.938 in. bore diameter for the specified brake setup
• DOT 3 brake fluid type
• Master cylinder cap included
• Standard replacement grade
• Part number M1642

Detailed Description

The MPA Electrical M1642 brake master cylinder is built for Mercury Montego models from 1968 through 1971 equipped with front disc brakes. It is remanufactured using OE sample references and tested to OE specifications so the hydraulic system can deliver consistent braking performance after installation. The cast iron housing and integral reservoir support the original-style brake system layout, while the 0.938 bore diameter helps maintain the correct pedal and pressure characteristics for the application. This part cross-references Monroe Shocks & Struts (e.g., C70Z2140K, C90Z2140B) for the same application.

Common Problems It Can Help Solve

• Low or inconsistent brake pedal feel
• Internal hydraulic leakage in the master cylinder
• Brake fluid loss from a worn master cylinder body or seals
• Reduced braking response in front disc brake systems
• Brake performance issues caused by an aging original unit

Installation Notes and Tips

Before installation, verify the vehicle is a 1968-1971 Mercury Montego with front disc brakes and confirm the bore size and mounting pattern match the original unit. Mounting hardware, push rod, brake booster, seals, and pressure switch are not included. Bench bleed the master cylinder before connecting brake lines, and use fresh DOT 3 brake fluid during system service. Inspect the brake lines, booster, and wheel-end components for wear before returning the vehicle to service. Part number M1642 should be matched to the original brake system configuration for proper operation.

Quality Assurance

MPA Electrical remanufactures brake master cylinders using OE sample data and testing protocols aligned to OE specifications. Each unit is checked to help ensure consistent braking performance out of the box. For buyers searching for a Mercury Montego brake master cylinder, M1642 provides a remanufactured OE-style replacement built for the correct front disc brake application.