This Dorman master cylinder is a perfect fit for your Ford Falcon, Mustang, Thunderbird, or Ranch Wagon. It comes with a master cylinder cap and is made of durable cast iron material with a rust preventative finish. The bore diameter is .875 inches and it is compatible with various OE/OEM part numbers including 5472928, C1SZ2140A, C5ZZ2140B, 5472933, F39626, 83-34005, 13-36095, M-81005, and MC250170. This master cylinder is a great replacement part for your vehicle's braking system. It is not a vintage part and is not intended for universal fitment or performance upgrades. The manufacturer part number is M39626 and it is made in Taiwan. Purchase this Dorman master cylinder for a reliable and long-lasting braking system.