This is a Brand new SHORT Mechanical Water Pump designed for your Small Block Chevy Engines. Made from light weight aluminum, and having a polished finish this pump is a definite upgrade from the OEM pumps. It also features a cool ribbed style that will set your engine apart from the others. The polished finish on these is not flawless, but it is still very nice and a big time upgrade in looks and performance over the old, cast pump.