Cincinnati Milacron 3-542-1221A Circuit Board is a used Milacron PC board identified by part number 3-542-1221A. Listed by multiple distributors within the 3-542-12xx Milacron PC board family—adjacent models such as 3-542-1223A and 3-542-1210A—this part is sold as a replacement circuit board for Milacron equipment. Aged, used condition is indicated in listings like MRO Global Solutions, confirming it as a second-hand component. Because compatibility depends on the specific Milacron machine and firmware, buyers should match the 3-542-1221A part number to their service documentation and consult the machine's control system specs before purchasing.
