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aFe Apollo GT Series 3in 409SS GM Silverado/Sierra 1500 09-18 V6-4.3/V8-4.8/5.3L - Polished Fits Select: 2009-2018 CHEVROLET SILVERADO 8 Cyl 5.3 L 2009-2018 GMC SIERRA 8 Cyl 5.3 L and more - add your vehicle to our fit widget to check