HK06WC090 pressure switch, for various Carrier & BDP label furnaces.Carrier replacement for old part numbers HK06WC088, HK06WC076, HK06WC086 and HK06WC074. NOTE; the new pressure switch may look and mount differently then the old switch it replaces. The connection terminals may also have to be changed, --in some cases you may even need to make a new mounting bracket from a small piece of sheet metal *not included, or change the wire connectors.