The Paccar Bellow Kit is a practical and reliable solution for Paccar truck owners. Made with 321 stainless steel construction, this kit includes a 4-inch diameter, 12.6-inch long bellow, a 4-inch diameter flange and flare, one bellow, two rings, and two clamps. Designed to fit most Paccar trucks, this kit compares to OEM numbers M66-7091-0320 and M66-6541-0320. With its durable construction and comprehensive components, the Paccar Bellow Kit ensures optimal performance and longevity for your truck's exhaust system. Trust in this kit to keep your Paccar truck running smoothly and efficiently.