The Cardone Reman Engine Control Module ECM ECU is a high-quality replacement part designed specifically for the Dodge Dynasty 1990. This module comes with a 1-year manufacturer warranty and meets or exceeds OEM standards. With interchange part numbers such as 4686646, 4720787, and 4639398, this ECM ECU is a reliable choice for ensuring the proper functioning of your vehicle's engine control system. Additionally, the California Prop 65 Warning ensures that customers are aware of potential health risks associated with this product.