Flowmaster 718102 Flow FX Direct Fit Exhaust Muffler Assembly for Ford 6.2, 6.8, 7.3

3.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation A tuned Flow FX style muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow Max increases of up to 12 hp and 11 lb-ft over the stock exhaust at the wheels Tuned performance muffler eliminates interior drone Maintains factory warranty Lifetime Limited Warranty