The 4.0L 1GRFE engine, marked by the 5th digit VIN U and suited for 4x4 configurations, is an ideal used engine for off-road and challenging driving conditions. This naturally aspirated V6 engine delivers consistent power across terrains, supported by a multi-port electronic fuel injection system for efficient fuel distribution. Its DOHC setup with variable timing ensures optimal performance and responsiveness, making this used engine a robust choice for 4x4 vehicles. Drivers seeking durability and reliability in their 4x4 engines will find this option highly suitable.