MPA Electrical NM4098 Brake Master Cylinder

Brake Master Cylinder for Ford F-150

Restore consistent brake pedal response with this new brake master cylinder from MPA Electrical. Built as a standard replacement for 2003 Ford F-150 and 2004 Ford F-150 Heritage models with front disc brakes, part number NM4098 is engineered to match OE specifications for dependable hydraulic performance.

MPA Electrical’s New with front disc brakes product line focuses on direct-fit brake hydraulic replacement parts for vehicles that need accurate bore sizing, reservoir configuration, and fluid compatibility. This NM4098 master cylinder is built for DOT 3 brake fluid use and arrives with a plastic reservoir and cap installed.

Key Features

• Standard replacement brake master cylinder for hydraulic brake repair
• Fits 2003 Ford F-150 and 2004 Ford F-150 Heritage with front disc brakes
• Aluminum master cylinder body with plastic reservoir
• 1.188-inch bore diameter for OE-style brake pressure delivery
• DOT 3 fluid type
• Master cylinder cap included
• Two mounting holes with 0.412-inch mounting hole diameter
• New condition

Detailed Description

MPA Electrical NM4098 is a brake master cylinder designed for Ford F-150 brake system service where the original hydraulic unit has worn, leaked, or lost pedal consistency. It is built with an aluminum housing, plastic reservoir, and a 1.188-inch bore diameter to support proper brake fluid movement in vehicles equipped with front disc brakes. This part cross-references Ford 3L3Z2140AA and 3L3Z2140AC for the same application.

Compatible With 2003 Ford F-150, front disc brakes, and 2004 Ford F-150 Heritage, front disc brakes. Use NM4098 when replacing a master cylinder that no longer maintains firm pedal feel, shows internal bypass symptoms, or has visible fluid seepage at the hydraulic unit.

What It Helps Fix

• Soft or sinking brake pedal
• Brake fluid leakage from the master cylinder
• Uneven hydraulic pressure delivery
• Loss of braking response after master cylinder wear
• Brake warning concerns related to hydraulic performance

Installation Notes

Verify bore diameter, reservoir style, and mounting hole layout before installation. This unit does not include mounting hardware, a push rod, brake booster, gasket, seal, or brake pressure switch. Bench bleeding the master cylinder before installation helps remove trapped air and supports proper pedal feel after the system is reassembled. Confirm DOT 3 fluid is used and bleed the brake system thoroughly after installation.

Quality Assurance

MPA Electrical tests each brake master cylinder against OE specifications using proprietary processes and strict protocols to help ensure consistent braking performance out of the box. NM4098 is a new replacement part built for accurate hydraulic restoration on Ford F-150 applications.