The Napa Echlin ICR23 Ignition Coil Resistor is a vintage part suitable for use in Checker Marathon and Chrysler LeBaron vehicles. Manufactured in the United States, this resistor is designed for front placement on the vehicle and requires an external resistor for proper functioning. The matte finish and compatibility with various interchange and OE/OEM part numbers make it a reliable choice for ignition systems in classic cars. Please note that the product may contain materials that are known to cause cancer and reproductive harm, as indicated by the California Prop 65 Warning.