{"product_id":"stainless-works-2007-13-chevy-silverado-gmc-sierra-headers-1-7-8in-primaries-high-flow-cats-y-pipe","title":"Stainless Works 2007-13 Chevy Silverado\/GMC Sierra Headers 1-7\/8in Primaries High-Flow Cats Y-Pipe","description":"\u003cp\u003eThe \u003cstrong\u003eStainless Works 2007-13 Chevy Silverado\/GMC Sierra Headers 1-7\/8in Primaries High-Flow Cats Y-Pipe\u003c\/strong\u003e is engineered for direct OE-style fitment and dyno-tested performance gains. Below are the technical details, fitment notes, and what's included.\u003c\/p\u003e\u003cp\u003eStainless Works headers are American-made performance long-tubes built from premium T-304 stainless steel and TIG-welded by hand in Chagrin Falls, Ohio. Engineered with 1-7\/8\" or 2\" primary tubes (application-dependent), merged collectors, and your choice of high-flow catted or off-road configurations — these are the same headers used by professional Pro Modified, NHRA, and road-race teams.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eT-304 stainless steel construction — race-grade, corrosion-proof\u003c\/li\u003e\n\u003cli\u003eHand-TIG-welded in Chagrin Falls, OH — made in USA\u003c\/li\u003e\n\u003cli\u003eApplication-specific primary diameter (typically 1-7\/8\" or 2\") \u0026amp; length\u003c\/li\u003e\n\u003cli\u003eFactory Connect with high-flow cats OR off-road (no-cat) versions\u003c\/li\u003e\n\u003cli\u003eO2 sensor bungs in correct locations for CEL-free installation\u003c\/li\u003e\n\u003cli\u003eBacked by Stainless Works limited lifetime warranty against welds \u0026amp; defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Long-tube headers are race-use only in many states. The catted versions are 50-state street-legal in most applications — verify CARB\/EPA status for your build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout SP Engineering:\u003c\/strong\u003e California-based race shop and authorized dealer since 1995. In-stock orders ship same or next business day. Free expert install advice by phone, chat, or email. Questions about fitment, supporting modifications, or tuning? Reach out before ordering — we tune the same brands we sell.\u003c\/p\u003e","brand":"Stainless Works","offers":[{"title":"Default Title","offer_id":42815346311273,"sku":"SSWCT07HCATY","price":2422.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2600\/1038\/files\/78d348487be3ce0791b03fe8a9179aad_9cc37e81-cf20-4d60-85af-dd040d659218.jpg?v=1768354262","url":"https:\/\/store.sp-power.com\/products\/stainless-works-2007-13-chevy-silverado-gmc-sierra-headers-1-7-8in-primaries-high-flow-cats-y-pipe","provider":"SP Engineering","version":"1.0","type":"link"}