FLOWMASTER SUPER 40 SERIES DELTA FLOW MUFFLER, ALUMINIZED STEEL, NATURAL FINISH -- 2.5 in. inlet and outlet diameter; Single offset inlet and center outlet configuration; 5 in. thick x 10 in. wide x 13.5 in. case length, 19.5 in. overall length; Oval casing; Chambered internal construction; Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability; Incorporates Flowmaster's Delta Flow technology and enlarged case to provide the best performance and sound; Requires welding; With Flowmaster's limited 3-year warranty.