The 4.0L engine marked by the 4th digit VIN A is a solid used engine choice, ideal for drivers in need of steady and reliable performance. Its naturally aspirated design provides consistent power without the added complexity of forced induction, making it low maintenance and durable. Equipped with multi-port electronic fuel injection, this engine offers precise fuel distribution for improved economy. The single overhead camshaft (SOHC) setup promotes dependable timing, making this used engine a strong option for those seeking simplicity and long-term reliability in their vehicle's powertrain.