Other 00644767990-6451 Genuine Original Equipment Manufacturer (OEM) Part Shut off the electrical power supply to the furnace before installing this part Booster motor assembly 7990-6451 aids in circulating air through the exhaust vent system Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Other This manufacturer-approved booster motor assembly (part number 7990-6451) is for furnaces The assembly may include multiple parts; refer to your parts diagram for a complete list of parts included