{"product_id":"header-collectors-3in-to-2-5in-reducer","title":"Header Collectors 3in to 2.5in Reducer","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eUpgrade your custom exhaust system with these high-quality 304 stainless steel Header Collectors, designed for performance builders, exhaust fabricators, and automotive enthusiasts. These header collector reducers provide a practical way to transition from a standard 3-inch 3-bolt header flange to a 2.5-inch exhaust system while maintaining a secure and reliable connection.\u003c\/p\u003e\n\u003cp\u003eBuilt from 18-gauge 304 stainless steel with an approximate 0.05-inch wall thickness, these Header Collectors are engineered to withstand the high temperatures and demanding conditions found in performance exhaust systems. The stainless steel construction provides excellent corrosion resistance and long-term durability, making these collectors suitable for street performance vehicles, race builds, hot rods, muscle cars, and custom exhaust projects.\u003c\/p\u003e\n\u003cp\u003eThe compact 3.5-inch overall length makes these header collector reducers particularly useful when exhaust routing space is limited. Their shorter design can help prevent interference with chassis components and provides greater flexibility when connecting headers to custom 2.5-inch exhaust piping.\u003c\/p\u003e\n\u003cp\u003eEach collector features a standard 3-inch 3-bolt header flange inlet and reduces to a 2.5-inch outlet. The outlet can be welded or clamped depending on the configuration of your custom exhaust system.\u003c\/p\u003e\n\u003cp\u003eSolid copper 3-bolt collector gaskets are included. Copper gaskets are well suited to high-temperature exhaust applications and can provide a durable sealing solution when properly installed.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e304 stainless steel Header Collectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConverts 3-inch header outlet to 2.5-inch exhaust piping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStandard 3-inch 3-bolt header flange inlet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2.5-inch (2 1\/2-inch) exhaust outlet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact approximately 3.5-inch overall length\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e18-gauge stainless steel construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately 0.05-inch wall thickness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExcellent heat and corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for custom exhaust fabrication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for performance exhaust systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSuitable for tight exhaust routing applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncludes solid copper 3-bolt collector gaskets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting hardware included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHeader Collector Reducer Specifications\u003c\/h2\u003e\n\u003cp\u003eMaterial: 304 Stainless Steel\u003cbr\u003eMaterial Thickness: 18 Gauge\u003cbr\u003eApproximate Wall Thickness: 0.05 inch\u003cbr\u003eInlet: 3-inch 3-bolt header flange\u003cbr\u003eOutlet: 2.5-inch \/ 2 1\/2-inch exhaust\u003cbr\u003eOverall Length: Approximately 3.5 inches\u003cbr\u003eFlange Type: 3-bolt\u003cbr\u003eApplication: Universal custom exhaust systems\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e2 × 304 stainless steel Header Collectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2 × 3-inch 3-bolt flanges\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2 × solid copper 3-bolt collector gaskets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow These Header Collectors Work\u003c\/h2\u003e\n\u003cp\u003eThese Header Collectors are designed to connect performance headers with a 3-inch 3-bolt outlet to a smaller 2.5-inch exhaust system. The reducer design creates a convenient transition between the header collector and the exhaust piping, making it useful for custom exhaust systems where different pipe diameters need to be connected.\u003c\/p\u003e\n\u003cp\u003eThe compact design is especially beneficial for installations where space is limited. With an approximately 3.5-inch overall length, these collector reducers can provide more flexibility when routing exhaust around chassis components, suspension parts, or other underbody obstacles.\u003c\/p\u003e\n\u003cp\u003eThe 2.5-inch outlet can be welded directly to custom exhaust tubing or connected using an appropriate clamp, depending on the exhaust system design.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose 304 Stainless Steel Header Collectors?\u003c\/h2\u003e\n\u003cp\u003e304 stainless steel is widely used in automotive exhaust systems because of its resistance to corrosion and ability to withstand high-temperature environments. These Header Collectors provide a durable solution for performance and custom exhaust applications where reliable materials and proper exhaust transitions are important.\u003c\/p\u003e\n\u003cp\u003eThe included solid copper collector gaskets are also designed for demanding exhaust environments. When correctly installed, the gaskets help create a reliable seal between the header flange and collector reducer.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThese Header Collectors are suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCustom exhaust systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerformance exhaust builds\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\u003eHot rods\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStreet performance vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRace and track builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCustom fabrication projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerformance headers with 3-inch 3-bolt outlets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExhaust systems using 2.5-inch tubing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment Information\u003c\/h2\u003e\n\u003cp\u003eThese Header Collectors are designed for universal applications using standard 3-inch 3-bolt header collectors and 2.5-inch exhaust systems.\u003c\/p\u003e\n\u003cp\u003eBefore ordering, verify the header flange pattern, outlet diameter, available installation space, and exhaust routing on your vehicle. Because these are universal components, vehicle-specific fitment is not guaranteed.\u003c\/p\u003e\n\u003cp\u003eProfessional installation is recommended, particularly when welding the reducers to a custom exhaust system.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat are these Header Collectors used for?\u003c\/h3\u003e\n\u003cp\u003eThese Header Collectors are used to transition from a 3-inch 3-bolt header outlet to a 2.5-inch exhaust system. They are designed primarily for custom and performance exhaust fabrication.\u003c\/p\u003e\n\u003ch3\u003eWhat size header flange do these collectors fit?\u003c\/h3\u003e\n\u003cp\u003eThey are designed for standard 3-inch 3-bolt header collector outlets.\u003c\/p\u003e\n\u003ch3\u003eWhat size exhaust pipe do these Header Collectors connect to?\u003c\/h3\u003e\n\u003cp\u003eThe reducers have a 2.5-inch (2 1\/2-inch) outlet designed for compatible exhaust tubing.\u003c\/p\u003e\n\u003ch3\u003eWhat are these header collector reducers made from?\u003c\/h3\u003e\n\u003cp\u003eThey are constructed from 18-gauge 304 stainless steel with an approximate 0.05-inch wall thickness.\u003c\/p\u003e\n\u003ch3\u003eHow long are the collectors?\u003c\/h3\u003e\n\u003cp\u003eEach Header Collector measures approximately 3.5 inches in overall length.\u003c\/p\u003e\n\u003ch3\u003eAre gaskets included?\u003c\/h3\u003e\n\u003cp\u003eYes. The kit includes two solid copper 3-bolt collector gaskets.\u003c\/p\u003e\n\u003ch3\u003eAre mounting hardware and flanges included?\u003c\/h3\u003e\n\u003cp\u003eYes. The kit includes two 3-inch 3-bolt flanges and mounting hardware.\u003c\/p\u003e\n\u003ch3\u003eCan the 2.5-inch outlet be welded?\u003c\/h3\u003e\n\u003cp\u003eYes. The outlet can be welded to compatible exhaust tubing. It may also be connected using an appropriate exhaust clamp depending on the installation.\u003c\/p\u003e\n\u003ch3\u003eAre these Header Collectors universal?\u003c\/h3\u003e\n\u003cp\u003eThey are designed for universal applications using standard 3-inch 3-bolt header collectors and 2.5-inch exhaust systems. Always verify dimensions before purchasing.\u003c\/p\u003e\n\u003ch3\u003eAre these suitable for high-temperature exhaust applications?\u003c\/h3\u003e\n\u003cp\u003eYes. The 304 stainless steel construction is designed to withstand the heat and demanding conditions associated with automotive performance exhaust systems.\u003c\/p\u003e\n\u003ch3\u003eAre these suitable for tight exhaust spaces?\u003c\/h3\u003e\n\u003cp\u003eYes. The compact approximately 3.5-inch length is useful for custom exhaust installations where longer collector reducers may interfere with chassis components or exhaust routing.\u003c\/p\u003e\n\u003ch2\u003eFinal Fitment Summary\u003c\/h2\u003e\n\u003cp\u003eThese 304 stainless steel Header Collectors provide a compact and durable solution for adapting 3-inch 3-bolt performance headers to 2.5-inch exhaust systems. With 18-gauge 304 stainless steel construction, a compact 3.5-inch design, solid copper collector gaskets, 3-bolt flanges, and included mounting hardware, this kit is well suited for custom exhaust fabrication and performance applications.\u003c\/p\u003e\n\u003cp\u003eAlways confirm the header flange pattern, pipe diameter, dimensions, and available clearance before installation.\u003c\/p\u003e","brand":"Certified Automotive Experts","offers":[{"title":"Default Title","offer_id":51834163298626,"sku":"CAE-003-SS","price":79.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/4664\/2498\/files\/Header_Collector.jpg?v=1786715885","url":"https:\/\/certifiedautomotiveexperts.com\/products\/header-collectors-3in-to-2-5in-reducer","provider":"Certified Automotive Experts","version":"1.0","type":"link"}