The Dorman - First Stop Brake Master Cylinder M630603 converts brake-pedal force into the hydraulic pressure that operates the brake system, and it's precision-engineered to match the design, function, and performance of the original unit on the listed applications. It drops in as a direct-fit replacement for the 2009-2015 Honda Pilot (All engines).
This unit has a single reservoir and an included sensor, two outlets, and a 0.875 in bore. The rearward and secondary outlet threads are M12 x 1.0, with a 1 mm primary outlet thread pitch. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan. A sinking or spongy pedal or fluid loss may be signs this part needs replacing; diagnose the cause before replacing, as these symptoms can have other causes.
Interchange: 100-3734 · 1003734 · 13-3304 · 133304 · 11-3304 · 113304 · 130.40073 · 13040073 · 355-59051 · 35559051 · 46100SZAA01 · 46100SZAA02 · NM55414 · MC391100 · F143287 · MC143287
This part cross-references / interchanges with the following part numbers:
Does this master cylinder fit my vehicle?
It's a direct-fit replacement for the 2009-2015 Honda Pilot (All engines). Check the Buyer's Guide tab to confirm it matches your vehicle.
What's included in the box?
The master cylinder with its single reservoir and an included sensor. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused.
What material is it made of?
The housing is aluminum, cast to match the original part's casting material, and all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
What are the key specifications?
It has a 0.875 in bore, two outlets, and M12 x 1.0 rearward and secondary outlet threads with a 1 mm primary outlet thread pitch. Country of origin: Taiwan.
How do I know if my master cylinder needs replacing?
Signs may include a sinking or spongy brake pedal or unexplained fluid loss. Diagnose the cause before replacing, since these symptoms can have other sources.
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.