... mold casting parts , such as aluminum casting cylinder,fuel injection housing, gear houing Instead of using sand as the mold ... mold castings produce a lower piece cost part. Of course, the break-even point depends on the complexity of the ... Typical parts include gears, splines, wheels, gear housings, pipefittings, fuel injection housings, and automotive engine pistons.1. Cylinder2.Gear Housing3. Intake ...