The 4.0L 1UZFE engine, marked by the 5th digit VIN H, is a high-performance used engine choice featuring a V8 configuration that delivers robust power and reliability. Its naturally aspirated setup provides powerful output, and the advanced sequential electronic fuel injection ensures precise fuel management, enhancing both efficiency and performance. This engine's DOHC setup with optimized timing control contributes to its powerful response, making it a great fit for those seeking a durable and potent used engine for demanding driving conditions.