This 4.0L supercharged engine, identified by the 8th digit VIN B and designed for XKR models, is a high-performance used engine choice known for delivering outstanding power. With a V8 layout and high-pressure direct fuel injection, this engine maximizes efficiency and power. The DOHC setup with advanced tuning enhances performance, making it a prime option for XKR owners and those seeking an agile and powerful used engine designed for sports performance.