Put a new, precision-built unit behind your brake pedal with the Dorman First Stop Brake Master Cylinder M390418, which converts pedal force into the hydraulic pressure your brake system relies on. It fits many vehicles as a direct-fit replacement, among them the 1998-2002 Honda Accord, the 1998 Honda Odyssey and the 2001-2003 Acura CL, all engines. See the Buyer's Guide tab for the full list.
Dorman designed this master cylinder to replicate the design, function and performance of the original unit on the listed applications.
- Precise replacement: the aluminum cylinder housing is built to match the casting material of the original part, for similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely of new materials.
- Strict specifications: made to meet rigorous SAE International standards.
Specifications: 1 in bore diameter and two outlets. The secondary and rearward outlet threads are M10 x 1.0, and the primary outlet thread pitch is 1 mm. The reservoir and a sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners. Country of origin: Taiwan.
Signs a master cylinder may need replacing include a soft or sinking brake pedal, brake fluid leaking around the unit, or a steadily dropping fluid level. Diagnose the brake system first. If the original master cylinder is the cause, M390418 replaces it. Bleed the brakes as directed by the service procedure.
