Dorman - First Stop Brake Master Cylinder P/N:M630623
Turn pedal effort into hydraulic brake pressure with the Dorman First Stop Brake Master Cylinder, part number M390363. It is a direct-fit replacement for the 1996-2002 Chevrolet Express 1500 and 2500 and the 1996-2002 GMC Savana 1500 and 2500. Its design, function, and performance are precision-engineered to match the original master cylinder on these vans. Built from new, high-quality materials, it is intended as a safe, durable replacement.
Specifications: 1.125-inch bore diameter · 2 outlets · 1/2-20 rearward outlet size · reservoir included · sensor not included · mounting hardware not included. The package contains one master cylinder. Country of origin: China.
Fitment: 1996-2002 Chevrolet Express 1500 (engine: All) · 1996-2002 Chevrolet Express 2500 (engine: All) · 1996-2002 GMC Savana 1500 (engine: All) · 1996-2002 GMC Savana 2500 (engine: All). Quantity per vehicle: 1.
A soft or sinking brake pedal, brake fluid leaking at the master cylinder, or a brake warning light may be a sign that the master cylinder needs replacing. These symptoms can have other causes, so diagnose the brake system first. If the master cylinder is the cause, this unit replaces it. Follow the vehicle service information for bleeding procedures and the correct fasteners, including whether the original fasteners may be reused.
Interchange: 83-44036 · 100-2625 · M-86036 · 13-2763 · 10-2763 · 130.66036 · 131.66036 · 131.66037 · 355-47164 · 355-47165
8344036 · 1002625 · M86036 · 132763 · 102763 · 13066036 · 13166036 · 13166037 · 35547164 · 35547165 · 18M794 · M901027 · 13273 · MC252160 · 18029955 · 18060791 · M3035 · NM3035 · MC390363 · F134627 · F140292 · MC134627 · MC140292
This part cross-references / interchanges with the following part numbers:
Which vans does the Dorman M390363 master cylinder fit?
It is listed for the 1996-2002 Chevrolet Express 1500 and 2500 and the 1996-2002 GMC Savana 1500 and 2500. The engine listing for each is All, and one master cylinder is used per vehicle.
Does it come with a reservoir or mounting hardware?
The reservoir is included. Mounting hardware and a sensor are not included, so consult your service information for the correct fasteners and whether the originals may be reused.
What is the housing made of?
The cylinder housing is aluminum. All rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
What signs may mean my master cylinder needs replacing?
A soft or sinking pedal, fluid leaking at the master cylinder, or a brake warning light may be signs, though each can have other causes. Diagnose the system first; if the master cylinder has failed, this unit replaces it.
What are the bore and outlet specifications?
It has a 1.125-inch bore diameter and two outlets, with a 1/2-20 rearward outlet size.
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.