Dorman - First Stop Brake Master Cylinder P/N:M630794

A brake master cylinder converts the force from your brake pedal into the hydraulic pressure that operates the vehicle's brakes. The Dorman - First Stop Brake Master Cylinder M630794 is a direct-fit replacement for the 2002-2007 Chevrolet W4500 Tiltmaster, 2002-2007 GMC W4500 Forward, and 2002-2007 Isuzu NPR-HD (All). It is precision-engineered to match the design, function, and performance of the original unit and is built 100% new, not remanufactured.

• Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
• EPDM rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• Two outlets: a rearward outlet sized M10 x 1.0 and a secondary outlet thread of M12 x 1.0, with a 1.375 in bore and four mounting holes.
• Made to spec: manufactured to meet rigorous SAE International standards.

Ships with a bleeder kit; the reservoir, cap, push rod, sensor, mounting hardware, and mounting bracket are not included. Consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the original master cylinder may need replacing include a sinking or spongy pedal or fluid leakage — diagnose the cause before replacing, since these symptoms can have other sources. Country of origin: China.

Interchange: 130.76012 · 97315167 · 8973151670 · MC391538 · F140753 · MC140753
Manufacturer part number M630794