A stainless steel replacement muffler delete pipe for FPSS833, FPSS838, FPSS843, FPSS853, FPSS819 kits that fit 2008-2010 Ford Powerstrokes and 2004.5-2009 Dodge Cummins. If you have a muffler currently in your truck (with 4" aftermarket Flo~Pro exhaust) and want to delete it, or, just require a replacement, then this is the pipe for you!