Taco 006-036RP Replacement Cartridge for 006-IFC The beauty of Taco's "00" series circulators is in the simplicity Used on Models: 006-B5A-IFC, 006-B6-2IFC, 006-B6-3IFC, 006-B6-4IFC, 006-B6-IFC, 006-B6Y-1IFC, 006-B6Y-IFC Application: Heating - Type: Pump Part