The 4.0L engine, identified by the 8th digit VIN B and featuring a supercharged option, is a powerful used engine choice ideal for performance-oriented drivers. This supercharged V8 engine delivers high horsepower and responsiveness, supported by a direct fuel injection system for optimal fuel efficiency. Its DOHC with precision timing enhances the engine's power delivery, making it a top option for those who want a used engine with robust performance and superior output for demanding applications.