This 4.0L engine with the 4th digit VIN D provides a sturdy used engine option designed for those needing reliable performance across various driving conditions. The naturally aspirated design ensures steady power output without the need for forced induction, making it low maintenance and long-lasting. Its sequential multi-port fuel injection enhances fuel distribution, and the V6 cylinder arrangement offers balanced power delivery. The single overhead cam (SOHC) setup with efficient timing control promotes smooth operation, making it a dependable used engine for a variety of applications.