The 4.0L engine, featuring the 7th digit VIN 2 and standard emissions without secondary AIR injection, is a dependable used engine choice that offers performance with an emphasis on emissions compliance. The V6 naturally aspirated engine provides balanced power output, supported by an electronic fuel injection system for efficient fuel management. With a DOHC setup for reliable operation, this engine suits drivers who require a solid and compliant used engine without additional emission control features. It’s a practical choice for reliable performance and environmental standards.