The 3.7L VIN M engine with CNG compatibility is a practical used engine for eco-friendly and cost-effective operation. Its naturally aspirated design allows efficient power without forced air, and the sequential fuel injection system is optimized for compressed natural gas. Built with a reinforced V6 cylinder block, this engine ensures durability with gas fuels. The DOHC setup features CNG-specific valve adjustments, providing smooth performance and reliability, ideal for those seeking a sustainable and dependable used engine.