The GM GMC Truck SUV NP246 Transfer Case Empty Case 30605 & 30601 is a vintage part specifically designed for GM GMC Chevy Chevrolet vehicles. This empty case does not offer universal fitment, making it a unique and specific component for those models. With the manufacturer part numbers 30605 and 30601, this transfer case is a genuine and high-quality replacement part for your vehicle's transmission and drivetrain system.