The 4.0L 1GRFE engine, marked by the 5th digit VIN U and optimized for 4x2 automatic setups, offers a reliable used engine solution for vehicles needing dependable performance in this configuration. Its naturally aspirated design provides consistent power output, while the multi-port electronic fuel injection supports precise fuel management, enhancing fuel efficiency. With a V6 cylinder arrangement for balanced performance and a DOHC setup with advanced timing control, this used engine is well-suited for 4x2 automatic vehicles, making it a durable and efficient choice.