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Combining the only broad-market stainless-steel construction with a direct fit OE-style replacement, Walker Quiet-Flow SS muffler assemblies deliver longer life than typical aluminized mufflers and are available for domestic and foreign vehicles. BUY WITH CONFIDENCE -- Comes with Walker's limited lifetime warranty and exclusive 90-Day Safe and Sound® Guarantee. Visit Walkerexhaust.com for details. CORROSION RESISTANT STAINLESS STEEL -- The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection DESIGN VALIDATED -- Acoustic and flow tested for quality OE-style sound you can count on EASY TO INSTALL -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn't require specialized fabrication and/or welding PREMIUM ACOUSTIC CONTROL -- OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes Additional Features Finish:Aluminized Muffler Type:Combination Fits Select: 2004-2022 TOYOTA 4RUNNER 6 Cyl 4 L 2003 TOYOTA 4RUNNER 8 Cyl 4.7 L 2003-2004 LEXUS GX 8 Cyl 4.7 L and more - add your vehicle to our fit widget to check Manufacturer part number 56177 Vehicle make Lexus; Toyota Vehicle model GX470; 4Runner Vehicle year 2003 Inlet diameter 2.500 Outlet diameter 2.350 in Muffler type Combined Resonance & Absorber Muffler Material Stainless Steel Brand Quiet-Flow Vehicle fitment type Specific Automotive parts division Direct Replacement Features Easy Installation Finish Aluminized Vehicle type Truck Model 56177 Weight 18.0 lb Count 1 Has written warranty No Compatible cars 2003-2004 Lexus GX470; 2003-2009 Toyota 4Runner; 2003-2004 Toyota 4Runner; 2010-2017 Toyota 4Runner