Heater Blower Motor Resistor 3C0907521F For A3 Q3 Q7 TT Beetle CC The Heater Blower Motor Resistor 3C0907521F is a direct replacement for OEM numbers 3C1820015Q, 3C1820015K, and 3C1820015N.Designed to meet specifications, this resistor is compatible with multiple vehicle models including A3, Q3, Q7, TT, Beetle, and CC.Constructed with rubber material, it supports within the vehicle's heating and air-conditioning system. Installation is designed to be straightforward, allowing for efficient integration into the existing system.The component includes a gasket to a secure fit, helping maintain consistent performance.Certified under ISO9000 standards, the resistor adheres to established quality requirements. This blower motor resistor supports stable airflow control across various driving conditions.Built for durability, it functions effectively under normal operating conditions and is suited for both urban and extended driving environments. This is a non-OEM replacement.Any mention of brand names is strictly for compatibility clarification.