Fiat 46721165 Blower Motor Resistor Assembly

The 46721165 blower motor resistor is an electric pre-resistor designed to regulate interior blower fan speed within the HVAC system. It operates at 12V DC with a 3-pin connector interface. The component mounts directly into the heater box assembly to provide multiple fan speed settings through resistive voltage division. Cross-reference interchange includes OE numbers 23044902, DRS09009, and aftermarket references from Meat & Doria (667354), Thermotec (DEF005TT), MAXGEAR (57-0101), NTY (ERD-FT-000), and Mopar. The part supersedes earlier Fiat Group resistor designs for Borletti heating systems.