This is an A/C receiver drier, built as a direct replacement for International 1693117C1, 1682-171-C1, 2000-821-C, and 1693-117-C. It fits into the air conditioning circuit to filter refrigerant and remove moisture before it reaches the expansion valve, protecting downstream A/C components from contamination.Interchanges:WA907-20-8694FeaturesA/C receiver drier / receiver drying unitReplaces International 1693117C1Replaces International 1682-171-C1Replaces International 2000-821-CReplaces International 1693-117-C