54843 Walker Quiet-Flow Muffler v417593-v417979-v417980-v417981-v421671-v421672-v421673-v421674-v421675-v422505-v422506-v422507-v422508-v423213-v423214-v423215-v423429-v423612-v423613-v423926-v423927-v423929-v423930-v423931-v423932 2004 GMC Sierra 1500 Classic

2004 GMC Sierra 1500 Classic 2007 GMC Sierra 1500 HD 2001 GMC Yukon 2000

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54843 Walker Quiet-Flow Muffler v417593-v417979-v417980-v417981-v421671-v421672-v421673-v421674-v421675-v422505-v422506-v422507-v422508-v423213-v423214-v423215-v423429-v423612-v423613-v423926-v423927-v423929-v423930-v423931-v423932 2004 GMC Sierra 1500 ClassicWalker Quiet Flow SS Muffler features a 100% stainless steel construction Precision fit, superior flow and OE style sound and performance Fits like OE because Walker makes OE Spun locked heads help resist ruptures due to backfires Durable internal partitions for greater interior structural stability and a long service life Strong, OE style spot welds help improve structural stability and increase durability OE style louvered tube technology lowers the