{"product_id":"3-to-2-5-stainless-header-collector-reducers","title":"3\" to 2.5\" Stainless Header Collector Reducers","description":"\u003ch1\u003e3\" to 2.5\" Stainless Steel Header Collector Reducers – 3-Bolt\u003c\/h1\u003e\n\u003cp\u003eBuild a clean transition from \u003cstrong\u003e3-inch header collectors to a 2.5-inch exhaust system\u003c\/strong\u003e with this pair of \u003cstrong\u003e3\" to 2.5\" stainless steel header collector reducers\u003c\/strong\u003e from Certified Automotive Experts. Designed for headers with a standard \u003cstrong\u003e3-bolt 3-inch collector flange\u003c\/strong\u003e, these compact reducers provide a practical solution when your exhaust system uses smaller 2.5-inch tubing.\u003c\/p\u003e\n\u003cp\u003eMade from \u003cstrong\u003e18-gauge 304 stainless steel tubing\u003c\/strong\u003e with approximately \u003cstrong\u003e0.05-inch wall thickness\u003c\/strong\u003e, these exhaust collector reducers are designed for durability, heat resistance, and reliable performance in demanding automotive exhaust applications. At approximately \u003cstrong\u003e3.5 inches long\u003c\/strong\u003e, their compact design helps save valuable space when routing exhaust around crossmembers, transmissions, floor pans, driveshafts, and other underbody components.\u003c\/p\u003e\n\u003cp\u003eEach reducer features a \u003cstrong\u003e3-inch inlet and 2.5-inch outlet\u003c\/strong\u003e, making it suitable for connecting compatible 3-inch, 3-bolt header collectors to 2.5-inch exhaust tubing. The 2.5-inch outlet can be incorporated into a \u003cstrong\u003ewelded or clamped exhaust system\u003c\/strong\u003e, depending on your installation requirements.\u003c\/p\u003e\n\u003cp\u003eThe kit includes \u003cstrong\u003etwo solid copper collector gaskets\u003c\/strong\u003e designed to provide a dependable sealing surface at the hot header collector connection. Mounting hardware is also included, giving you the essential components needed to install the reducers without having to source additional collector bolts separately.\u003c\/p\u003e\n\u003cp\u003eThese reducers are not limited to a specific vehicle or engine. They are an excellent choice for \u003cstrong\u003ehot rods, muscle cars, classic trucks, street machines, engine swaps, custom builds, and other project vehicles\u003c\/strong\u003e using compatible 3-inch 3-bolt headers and 2.5-inch exhaust tubing.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e3-inch to 2.5-inch exhaust transition\u003c\/strong\u003e for compatible header systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for \u003cstrong\u003e3-inch, 3-bolt header collectors\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMade from \u003cstrong\u003e18-gauge 304 stainless steel\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately \u003cstrong\u003e0.05-inch wall thickness\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact \u003cstrong\u003eapproximately 3.5-inch overall length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHelps simplify exhaust routing in tight underbody spaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with welded or clamped \u003cstrong\u003e2.5-inch exhaust systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncludes \u003cstrong\u003esolid copper collector gaskets\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting hardware included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSuitable for custom exhaust systems, engine swaps, hot rods, muscle cars, and classic trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSold as a \u003cstrong\u003epair of two stainless steel collector reducers\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose These 3\" to 2.5\" Header Reducers?\u003c\/h2\u003e\n\u003cp\u003eA 3-inch header collector does not require a complete 3-inch exhaust system. If your headers have \u003cstrong\u003e3-inch 3-bolt collectors\u003c\/strong\u003e but your planned exhaust system uses \u003cstrong\u003e2.5-inch tubing\u003c\/strong\u003e, these reducers provide a compact and straightforward way to make the transition.\u003c\/p\u003e\n\u003cp\u003eTheir short design is particularly useful when exhaust space is limited. Instead of using a longer transition that can complicate exhaust routing, these approximately 3.5-inch reducers give you additional room to position your exhaust around the vehicle's chassis and underbody components.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e304 stainless steel construction\u003c\/strong\u003e provides a durable material for an exhaust environment where heat, vibration, and road conditions can be demanding.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\u003cp\u003eEach kit includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2 × 3\" to 2.5\" stainless steel collector reducers\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2 × solid copper collector gaskets\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting hardware\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eHeader Collector Reducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet Diameter\u003c\/td\u003e\n\u003ctd\u003e3 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet Diameter\u003c\/td\u003e\n\u003ctd\u003e2.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector Connection\u003c\/td\u003e\n\u003ctd\u003e3-Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial Gauge\u003c\/td\u003e\n\u003ctd\u003e18 Gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Wall Thickness\u003c\/td\u003e\n\u003ctd\u003e0.05 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Length\u003c\/td\u003e\n\u003ctd\u003e3.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e2 Reducers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGaskets\u003c\/td\u003e\n\u003ctd\u003e2 Solid Copper Collector Gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eWelded or Clamped Exhaust System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCustom Automotive Exhaust Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThese 3-inch to 2.5-inch header collector reducers can be used for a variety of custom automotive applications, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHot rods\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMuscle cars\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClassic cars\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClassic trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStreet machines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEngine swaps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCustom-built vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerformance exhaust systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProject cars\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCustom exhaust fabrication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eThese reducers are designed for applications using a \u003cstrong\u003ecompatible 3-inch, 3-bolt header collector\u003c\/strong\u003e and a \u003cstrong\u003e2.5-inch exhaust system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Please verify your header collector flange pattern, collector diameter, outlet size, and available installation space before ordering. This is a universal-style exhaust component and is \u003cstrong\u003enot vehicle-specific\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat size headers do these reducers fit?\u003c\/h3\u003e\n\u003cp\u003eThey are designed to connect headers with a \u003cstrong\u003e3-inch, 3-bolt collector\u003c\/strong\u003e to a \u003cstrong\u003e2.5-inch exhaust system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat is the outlet size?\u003c\/h3\u003e\n\u003cp\u003eThe outlet is designed for \u003cstrong\u003e2.5-inch exhaust tubing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat material are the reducers made from?\u003c\/h3\u003e\n\u003cp\u003eThe reducers are constructed from \u003cstrong\u003e18-gauge 304 stainless steel tubing\u003c\/strong\u003e with approximately \u003cstrong\u003e0.05-inch wall thickness\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow long are the reducers?\u003c\/h3\u003e\n\u003cp\u003eEach reducer is approximately \u003cstrong\u003e3.5 inches long\u003c\/strong\u003e, making them useful where exhaust installation space is limited.\u003c\/p\u003e\n\u003ch3\u003eCan these reducers be welded?\u003c\/h3\u003e\n\u003cp\u003eYes. The 2.5-inch outlets can be incorporated into a \u003cstrong\u003ewelded exhaust system\u003c\/strong\u003e. They can also be used with a suitable clamped exhaust setup.\u003c\/p\u003e\n\u003ch3\u003eAre gaskets included?\u003c\/h3\u003e\n\u003cp\u003eYes. The kit includes \u003cstrong\u003etwo solid copper collector gaskets\u003c\/strong\u003e, one for each reducer.\u003c\/p\u003e\n\u003ch3\u003eIs mounting hardware included?\u003c\/h3\u003e\n\u003cp\u003eYes. Mounting hardware is included with the kit.\u003c\/p\u003e\n\u003ch3\u003eAre these reducers vehicle-specific?\u003c\/h3\u003e\n\u003cp\u003eNo. They are designed around the collector and exhaust dimensions rather than a specific vehicle. Confirm that your headers use a compatible \u003cstrong\u003e3-inch 3-bolt collector\u003c\/strong\u003e and that your exhaust system uses \u003cstrong\u003e2.5-inch tubing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eAnswer-First Product Summary\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are these reducers?\u003c\/strong\u003e\u003cbr\u003eThese are a pair of \u003cstrong\u003e3-inch to 2.5-inch stainless steel header collector reducers\u003c\/strong\u003e designed to connect compatible \u003cstrong\u003e3-inch 3-bolt header collectors\u003c\/strong\u003e to 2.5-inch exhaust tubing. They are made from 18-gauge 304 stainless steel and include copper collector gaskets and mounting hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWho are they for?\u003c\/strong\u003e\u003cbr\u003eThey are suitable for builders working on \u003cstrong\u003ehot rods, muscle cars, classic trucks, engine swaps, street machines, and custom exhaust systems\u003c\/strong\u003e where 3-inch headers need to transition into a 2.5-inch exhaust system.\u003c\/p\u003e","brand":"Certified Automotive Experts","offers":[{"title":"Default Title","offer_id":55942664061250,"sku":"CAE-3x2.5-COLLECTOR","price":250.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/4664\/2498\/files\/3_to_2.5_Stainless_Header_Collector_Reducers.jpg?v=1787569705","url":"https:\/\/certifiedautomotiveexperts.com\/products\/3-to-2-5-stainless-header-collector-reducers","provider":"Certified Automotive Experts","version":"1.0","type":"link"}