Dorman - First Stop Brake Master Cylinder P/N:M390323

Turn brake-pedal effort into the hydraulic pressure that pushes fluid out to the wheels with the Dorman - First Stop Brake Master Cylinder M390323. It installs as a direct-fit replacement for the 1996-2000 Honda Civic (All engines), precision-engineered to match the design, function, and performance of the original unit on the listed application.

Features:

• 100% new build: made entirely of new materials — not remanufactured — and made to meet rigorous SAE International standards.
• Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
• EPDM seals: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• Ready to plumb: includes the reservoir and sensor, with two outlets, a 0.875 in bore, and M10 x 1.0 outlet threads.

The master cylinder generates the hydraulic pressure the brake system relies on each time you press the pedal. Signs the original may need replacing include a pedal that slowly sinks under steady pressure, a spongy feel, or brake-fluid seepage around the unit — if a failed master cylinder is the cause, this replaces it. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.

Interchange: Manufacturer part number M390323. Country of origin: Taiwan.