This is a Hot Wheels Front Mount Intercooler. For the customizers, this can fit in the front of a Hot Wheel where the front bumper is cut out of the casting.
NOTE: the two bottom pegs are each 1mm and 8mm apart. If you wish to mount it more easily to the base, making holes to match this would help.
I don't have a 3d Printer at home yet, so I haven't tested it. I have one on it's way from shapeways now and will update with images when it arives. I carefully took all the measurements with a Micrometer but will adjust the model when I get mine.