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Dorman - First Stop Brake Master Cylinder P/N:M390363
$146.99
The brake master cylinder is the hydraulic heart of the brake system, converting the force from your foot on the brake pedal into the fluid pressure that operates the calipers and wheel cylinders. The Dorman - First Stop Brake Master Cylinder M390363 drops in as a direct-fit replacement for the 1996-2002 Chevrolet Express 1500, 1996-2002 Chevrolet Express 2500, 1996-2002 GMC Savana 1500, and 1996-2002 GMC Savana 2500 (all engines). Dorman precision-engineers it to match the design, function, and performance of the original master cylinder on these applications, and it is made entirely from new materials rather than remanufactured.
- Aluminum construction: the cylinder housing is built to match the casting material of the original part for similar performance.
- Durable rubber: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Key specs: two outlets, a 1.125 in bore, and a 1/2-20 rearward outlet size.
- Built to standard: 100% new and made to meet rigorous SAE International standards.
The reservoir is included; a sensor and mounting hardware are not. Consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 18M794 · 83-44036 · 8344036 · M901027 · 100-2625 · 1002625 · M-86036 · M86036 · 13273 · 13-2763 · 132763 · 10-2763 · 102763 · 130.66036 · 131.66036 · 131.66037 · MC252160 · 355-47164 · 35547164 · 355-47165 · 35547165 · 18029955 · 18060791 · M3035 · NM3035 · MC390363 · F134627 · F140292 · MC134627 · MC140292. Manufacturer part number M390363.
This part cross-references / interchanges with the following part numbers:
18M794, 83-44036, M901027, 100-2625, M-86036, 13273, 13-2763, 10-2763, 130.66036, 131.66036, 131.66037, MC252160, 355-47164, 355-47165, 18029955, 18060791, M3035, NM3035, MC390363, F134627, F140292, MC134627, MC140292
Frequently Asked Questions
What does a brake master cylinder do?
It converts the force from your brake pedal into hydraulic pressure, sending brake fluid to the calipers and wheel cylinders that clamp the brakes at each wheel.
Which vehicles does the M390363 fit?
It is a direct-fit replacement for the 1996-2002 Chevrolet Express 1500 and 2500 and the 1996-2002 GMC Savana 1500 and 2500 (all engines). See the Buyer's Guide tab to confirm your vehicle.
Does it include a reservoir, sensor, or mounting hardware?
The reservoir is included. A sensor and mounting hardware are not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What are the key specifications?
It has an aluminum housing, two outlets, a 1.125 in bore diameter, and a 1/2-20 rearward outlet size. All rubber components use an EPDM compound resistant to glycol-based brake fluid.
What are signs the master cylinder may need replacing?
Signs may include a brake pedal that slowly sinks under steady pressure, a spongy feel, or brake-fluid leaks at the cylinder. Diagnose the cause first, as these symptoms can have other sources.
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Dorman - First Stop Brake Master Cylinder P/N:M390363
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