Stainless Straight Pipe kit for 4 inch Banks Power Monster Exhaust Systems. Does not replace OEM muffler Replaces Muffler 53285 used in 2003 - 2007 5.9L Cummins 4 Inch Monster Exhausts. Includes 4 - inch x 34 - inch Exhaust Straight Pipe and all necessary hardware. Banks Power Straight Pipe Kits are made from durable galvanized T - 409 Stainless Steel. These kits come with necessary hardware for the applications listed in their description. Straight Pipe Kit, Replaces Muffler PN 53285. Key Features Straight Pipe kit, stainless Replaces Muffler 53285 Includes 4 - inch x 34 - inch Exhaust Straight Pipe Includes all necessary hardware