This ACDelco Professional spark plug is a great choice for your vehicle's ignition system. With a manufacturer part number of R42XLS, it is designed for conventional use and has a length of 4.16 inches. This spark plug is perfect for those looking for a replacement part for their car or truck and want to ensure reliable performance.It is compatible with a variety of vehicles and is a must-have for any DIY mechanic or car enthusiast. Don't miss out on this opportunity to improve your vehicle's ignition system and ensure smooth operation.