MPA Electrical NM4301 Brake Master Cylinder

Brake Master Cylinder for Super Duty Trucks

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM4301. It is a standard replacement unit built with an aluminum body, plastic reservoir, and a 1.5-inch bore for Ford heavy-duty trucks equipped with front disc brakes.

Compatible with 2013-2016 Ford F-350 Super Duty and 2013-2014 Ford F-250 Super Duty applications, NM4301 is built for direct brake hydraulic service on these Super Duty platforms. The reservoir is included, and the unit uses DOT 3 brake fluid.

Key Features

• MPA Electrical NM4301 brake master cylinder
• Standard replacement grade for brake hydraulic repair
• Aluminum master cylinder body with plastic reservoir
• 1.5-inch bore diameter
• Reservoir included; master cylinder cap included
• Uses DOT 3 brake fluid
• Two mounting holes with 0.415-inch mounting hole diameter
• New with front disc brakes application

Detailed Description

The NM4301 master cylinder is engineered to restore hydraulic braking performance by replacing a worn or leaking original unit. MPA Electrical tests each brake master cylinder against OE specifications using controlled processes and an OE sample library, helping ensure consistent operation out of the box. This part cross-references Ford DC3Z2140A for the same application.

For Ford F-350 Super Duty and Ford F-250 Super Duty trucks, this brake master cylinder supports proper brake pressure generation in front disc brake systems. The aluminum construction helps provide a durable housing, while the included plastic reservoir and cap simplify brake system service.

What It Helps Fix

• Low or inconsistent brake pedal feel
• Brake fluid leakage from a worn master cylinder
• Delayed hydraulic response during braking
• Internal seal wear affecting brake pressure
• Brake warning symptoms tied to master cylinder failure

Installation Notes and Tips

Verify bore size, mounting hole spacing, and brake system configuration before installation. Bench bleeding the master cylinder before connecting brake lines helps remove trapped air and supports proper pedal feel. Use DOT 3 brake fluid only, and inspect brake lines, fittings, and the booster interface during replacement. Mounting hardware, push rod, brake booster, seals, and pressure switch components are not included unless already present on the vehicle.

Quality Assurance

MPA Electrical manufactures this brake master cylinder as a new standard replacement part and tests it to OE specifications for consistent hydraulic performance. Part number NM4301 is built for direct service on the listed Ford Super Duty applications.