The product is an OEM Mercedes-Benz heater control valve recirculating pump assembly for models from 1986 to 1991. It includes the OE/OEM part numbers A0008303784 and A1268301814, This high-quality replacement part ensures proper functioning of the heating system in your Mercedes W126 C126 vehicle, providing peace of mind for both the driver and passengers. A knom good Part with a Mano valve insert refurbish.