Dorman - First Stop Brake Master Cylinder P/N:M390390

Turn pedal effort into hydraulic brake pressure with the Dorman First Stop Brake Master Cylinder M390390. It is a direct-fit replacement for the 1997-1998 Ford E-350 Econoline (Engine: All) and the 1997-1998 Ford Econoline Super Duty (Engine: All). It is precision-engineered to match the original master cylinder's design, function, and performance on these applications. Because it is built from new, high-quality materials, it is intended as a safe, durable replacement.

• Precise replacement: The aluminum cylinder housing is built to match the original part's material for similar performance.
• Durable design: Every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
• 100% new: The unit is made entirely of new materials for the highest quality and safety.
• Strict specifications: It is made to meet rigorous SAE International standards.

Specifications: The master cylinder has a 1.25-inch bore, 3 outlets, and a 7/16-24 secondary outlet thread. The reservoir and sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners. Country of origin: Taiwan.

A soft or low brake pedal, a pedal that slowly sinks under steady pressure, or brake fluid seeping from the unit are signs a master cylinder may need replacing. Other brake components can cause similar symptoms, so diagnose the system first. If the master cylinder is the cause, this unit replaces it. Bench-bleed it before installation, then bleed the brake system as the service procedure directs.

Interchange: 83-42052 · 100-2503 · M-85052 · 13-2860 · 10-2860 · 130.65052 · 355-54171
18M810 · M901045 · 13293 · MC251710 · F7UZ2140DB · M3049 · NM3049 · MC390390 · F134325 · F140462 · MC140462 · 8342052 · 1002503 · M85052 · 132860 · 102860 · 13065052 · 35554171