Dorman - First Stop Brake Master Cylinder P/N:M630943
Turn every press of the pedal into hydraulic braking pressure with the Dorman First Stop Brake Master Cylinder M390417, a new brake master cylinder for the 1998-2002 Honda Accord with all engines, installed as a direct-fit replacement. Dorman precision-engineers it to replicate the original master cylinder's design, function and performance on the listed applications, using new, high-quality materials for a safe, durable replacement.
Specifications: 2 outlets; 0.938 in bore diameter; rearward outlet size and secondary outlet thread both M10 x 1.0; primary outlet thread pitch 1 mm. The reservoir and a sensor are included with the master cylinder. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.
The listed application uses one master cylinder per vehicle; see the Buyer's Guide tab for full fitment details.
Interchange: 83-08038 · 100-1341 · M-54038 · 072-9581 · 13-2870 · 11-2870 · 130.40038 · 131.40038 · 355-59022
8308038 · 1001341 · M54038 · 0729581 · 132870 · 112870 · 13040038 · 13140038 · 35559022 · 18M839 · M901081 · 13530 · MC250670 · 46100S4KA01 · 46100S4KA02 · 46100S84A02 · 46100SK4A01 · M55137 · NM55137 · MC390417 · F134450 · MC134450
This part cross-references / interchanges with the following part numbers:
Is this a brake master cylinder or a clutch master cylinder?
M390417 is a brake master cylinder that supplies hydraulic pressure to the brakes; a clutch hydraulic system uses its own separate clutch master cylinder.
Is this the right 2000 Honda Accord master cylinder?
M390417 is listed for the 1998-2002 Honda Accord, which includes the 2000 model year. It is listed for all engines.
Does it come with a reservoir?
Yes — the reservoir and a sensor come with the master cylinder. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.
What are signs a brake master cylinder may need replacing?
Common signs include a soft or sinking brake pedal, fluid leaking at the master cylinder, and a dropping fluid level. Diagnose the brake system first, because other components can cause the same symptoms.
What are the outlet and bore specifications?
It has 2 outlets and a 0.938 in bore diameter. The rearward outlet size and secondary outlet thread are both M10 x 1.0, and the primary outlet thread pitch is 1 mm.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.