The Kenworth T660 2013 and newer 72-inch sleeper and extension kits are a practical and durable solution for your truck. Made of stainless steel and including all necessary hardware, these kits are available with or without a blockheater hole. Sold as a kit, they fit most Kenworth T660 2007-2009 with 72-inch sleepers and chassis fairings. The blank blockheater hole option provides flexibility for your specific needs. Upgrade your truck with these high-quality, easy-to-install kits for a seamless and functional addition to your vehicle.