This 7-inch diameter chrome plated steel exhaust stack is a practical and reliable choice for various Peterbilt models. Available in 52 inches long and 55 inches long, it is sold individually and designed in an OE style. The 52-inch spool is compatible with most 1994 to 2002 Peterbilt 379 models, while the 55-inch spool fits most 2003 to 2007 Peterbilt 397 models. With its durable construction and perfect fit, this exhaust stack offers a seamless upgrade for your Peterbilt truck.