The Kenworth / Peterbilt Bellow Pipe is a practical and reliable replacement for the OEM part numbers M66-6541-0335 and M66-7091-0335. Sold individually, this bellow pipe offers excellent functionality and durability. Designed to fit Kenworth and Peterbilt models, it ensures a secure and efficient connection. With its high-quality construction, this bellow pipe guarantees long-lasting performance, making it an ideal choice for any truck owner or mechanic in need of a dependable replacement part.