The Dynaflex Kenworth W900B Over Frame Left Side 8 Inch Elbow is designed for practical and efficient exhaust system maintenance. With a taper-loc reduction on the top side of the elbow to accept an 8-inch O.D. stack, this product ensures a secure and reliable fit. The 8-inch to 5-inch transition allows for versatile use, while the OEM number check ensures compatibility. This product is a must-have for anyone in need of a durable and high-quality exhaust system component.