The Kenworth Smart Gen 2 and Smart Gen 3 Black 5 Hole Hub Adapter is a practical and reliable solution for Kenworth truck owners. This adapter is available in black and features a 5 hole bolt pattern with a 40 spline count. It fits most Kenworth Smart Gen 2 series trucks from 2000 through 2006 and most Kenworth Smart Gen 3 models from 2006 and newer. Sold individually, this adapter is a must-have for those looking to upgrade their truck's performance and reliability.