This 4.2L V8 engine, identified by the 5th digit VIN M and produced up to November 2006, offers a reliable and robust option for those seeking a powerful used engine. Known for its durability and smooth operation, this naturally aspirated engine is designed to deliver consistent torque across a range of driving conditions. The high-pressure direct fuel injection system ensures efficient fuel distribution, while the heavy-duty 8-cylinder V configuration provides balanced power delivery. Its dual overhead cam design features an optimized camshaft for enhanced performance, making this used engine a great choice for those needing a durable, high-performing engine.