The Kenworth W900L 7 Inch Elbow is a practical and reliable product designed for Kenworth 2003 and 2006 Aerocab W900L models. With a 7-inch to 5-inch size and a 45-step feature, this elbow is perfect for accepting a 7-inch O.D. stack. It also comes with a Taper-Loc reduction on the top side, ensuring a secure fit. Sold individually, this Kenworth W900L 7 Inch Elbow is a must-have for any Kenworth owner looking for a high-quality and compatible replacement part.