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

Build firm, consistent brake-pedal feel with the Dorman - First Stop Brake Master Cylinder M390390. When you press the pedal, the master cylinder converts that force into the hydraulic pressure that operates the brake circuits. This unit is engineered to match the design, function, and performance of the original on the listed applications, dropping in as a direct-fit replacement for the 1997-1998 Ford E-350 Econoline and 1997-1998 Ford Econoline Super Duty (All engines).

• Aluminum housing: built to match the casting material of the original part for similar performance.
• EPDM rubber components: made from a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: made entirely of new materials, not remanufactured.
• Strict specifications: made to meet rigorous SAE International standards.

It has a 1.25 in bore, three outlets, and a 7/16-24 secondary outlet thread, and it ships with the reservoir and a brake-fluid-level sensor included. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused. A sinking or spongy pedal, loss of brake fluid, or a pedal that slowly drops under steady pressure can be signs the original master cylinder may need replacing — diagnose the cause first. Country of origin: Taiwan.

Interchange: 18M810 · 83-42052 · 8342052 · M901045 · 100-2503 · 1002503 · M-85052 · M85052 · 13293 · 13-2860 · 132860 · 10-2860 · 102860 · 130.65052 · MC251710 · 355-54171 · 35554171 · F7UZ2140DB · M3049 · NM3049 · MC390390 · F134325 · F140462 · MC140462. Manufacturer part number M390390.