The 4.2L V8 engine, built with a supercharged option specifically for XJR models, delivers peak performance for demanding drivers. The electronic fuel injection allows for precise fuel delivery, while the supercharged V8 layout boosts horsepower and acceleration. With dual overhead camshafts (DOHC), this used engine is tuned for efficiency and power, making it ideal for XJR owners who value both performance and refinement in their engine choice.