This HVAC blower control switch is designed as a replacement for automotive air conditioning systems that utilize the 31BC configuration and require part number 8971893890.Constructed from plastic, it integrates into the vehicle's existing HVAC control panel.Installation follows standard automotive procedures using mounting locations and electrical connections.The design maintains the form, fit, and function for temperature and airflow regulation.Package includes one blower control switch assembly.Please note that product dimensions may vary slightly due to manual measurement, and color appearance may differ based on display settings.