{"product_id":"afe-power-twisted-steel-long-tube-headers-for-2002-2021-subaru-impreza-wrx-sti-and-legacy-2-0l-2-5l-turbo-h4-part-number-48-36803","title":"aFe POWER Twisted Steel Long Tube Headers for 2002–2021 Subaru Impreza WRX\/STI and Legacy, 2.0L\/2.5L Turbo H4, Part Number 48-36803","description":"aFe POWER Twisted Steel Long Tube Headers are engineered to maximize exhaust flow for increased horsepower, torque, and improved throttle response. Constructed from mandrel-bent 304 stainless steel tubing, these headers provide exceptional strength, durability, and corrosion resistance for long-lasting performance. The optimized unequal-length tube design enhances exhaust scavenging while creating the iconic boxer rumble. Formed collectors reduce turbulence and improve exhaust velocity, while factory-style laser-cut flanges provide a secure, leak-free seal. Featuring 100% TIG-welded construction, the Twisted Steel Headers are designed for a direct-fit installation using factory exhaust locations with no cutting or modifications required—proudly engineered and manufactured in the USA.\nTwisted Steel Long Tube Header 304 Stainless Steel Subaru Impreza WRX\/STi\/Legacy 02-21 H4-2.0L (t)\/2.5L (t)\n\u003cul\u003e\n  \u003cli\u003eWorks with Factory Exhaust System with No Modifications Necessary\u003c\/li\u003e\n  \u003cli\u003eConstructed out of Mandrel-Bent 304 Stainless Steel Tubing\u003c\/li\u003e\n  \u003cli\u003eOptimized Tube Lengths for Improve Flow and Performance\u003c\/li\u003e\n  \u003cli\u003eLaser Cut Flanges are used for a Durable Leak-Free Seal\u003c\/li\u003e\n  \u003cli\u003e100% TIG-Welded for Strength and Durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBrief Description:\u003c\/strong\u003e The aFe POWER Twisted Steel Long Tube Headers are engineered to improve exhaust flow, horsepower, torque, and throttle response on select Subaru Impreza WRX, STI, and Legacy models. Their unequal-length design supports improved exhaust scavenging while preserving the characteristic Subaru boxer rumble. The headers are designed for direct-fit installation with factory exhaust locations and require no cutting or modifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Benefits:\u003c\/strong\u003e Mandrel-bent tubing and formed collectors help reduce exhaust turbulence and improve exhaust velocity. Optimized tube lengths promote efficient cylinder evacuation, while the free-flowing construction helps the engine breathe more effectively. Factory-style laser-cut flanges support a secure, leak-resistant connection, and 100% TIG-welded construction provides dependable strength for street and performance applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Mandrel-bent 304 stainless steel tubing for corrosion resistance and long-term durability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube Design:\u003c\/strong\u003e Unequal-length primary tubes enhance exhaust scavenging and produce the traditional boxer exhaust note.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollectors:\u003c\/strong\u003e Formed collectors reduce turbulence and help maintain exhaust gas velocity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWelding:\u003c\/strong\u003e 100% TIG-welded construction provides strong, consistent joints for demanding use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlanges:\u003c\/strong\u003e Factory-style laser-cut flanges support a durable, leak-resistant seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Direct-fit design uses factory exhaust locations without cutting or other modifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for select Subaru Impreza WRX, STI, and Legacy models with 2.0L or 2.5L turbocharged H4 engines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Engineered and manufactured in the USA by aFe POWER.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e One pair of aFe POWER Twisted Steel Long Tube Headers, Part Number 48-36803. Installation hardware and gaskets should be verified with the product packaging or installation instructions before beginning installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Intended for select 2002–2021 Subaru Impreza WRX, Impreza STI, and Legacy applications equipped with 2.0L or 2.5L turbocharged H4 engines. The supplied fitment data confirms compatibility with select 2005–2009 Subaru Legacy models; verify the exact year, engine, emissions configuration, and exhaust arrangement before ordering. This product is not CARB approved and may not be legal for use on pollution-controlled vehicles in all jurisdictions. California customers should confirm emissions compliance before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMandrel-bent 304 stainless steel tubing provides excellent strength and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eUnequal-length primary tubes improve exhaust scavenging and support the signature Subaru boxer rumble.\u003c\/li\u003e\n\u003cli\u003eFormed collectors reduce turbulence and help improve exhaust gas velocity.\u003c\/li\u003e\n\u003cli\u003eDirect-fit design works with factory exhaust locations without cutting or modifications.\u003c\/li\u003e\n\u003cli\u003eLaser-cut factory-style flanges promote a secure, leak-resistant seal.\u003c\/li\u003e\n\u003cli\u003e100% TIG-welded construction delivers consistent strength and durability.\u003c\/li\u003e\n\u003cli\u003eOptimized tube lengths help improve exhaust flow, horsepower, torque, and throttle response.\u003c\/li\u003e\n\u003cli\u003eEngineered and manufactured in the USA by aFe POWER.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2002 Subaru Impreza WRX\u003cbr\u003e\n2003 Subaru Impreza WRX\u003cbr\u003e\n2004 Subaru Impreza WRX\u003cbr\u003e\n2004 Subaru Impreza WRX STI\u003cbr\u003e\n2005 Subaru Impreza WRX\u003cbr\u003e\n2005 Subaru Impreza WRX STI\u003cbr\u003e\n2005 Subaru Legacy GT\u003cbr\u003e\n2005 Subaru Legacy GT Limited\u003cbr\u003e\n2006 Subaru Impreza WRX\u003cbr\u003e\n2006 Subaru Impreza WRX Limited\u003cbr\u003e\n2006 Subaru Impreza WRX STI\u003cbr\u003e\n2006 Subaru Impreza WRX TR\u003cbr\u003e\n2006 Subaru Legacy GT\u003cbr\u003e\n2006 Subaru Legacy GT spec.B\u003cbr\u003e\n2007 Subaru Impreza WRX\u003cbr\u003e\n2007 Subaru Impreza WRX Limited\u003cbr\u003e\n2007 Subaru Impreza WRX STI\u003cbr\u003e\n2007 Subaru Impreza WRX STI Limited\u003cbr\u003e\n2007 Subaru Impreza WRX TR\u003cbr\u003e\n2007 Subaru Legacy GT Limited\u003cbr\u003e\n2007 Subaru Legacy GT spec.B\u003cbr\u003e\n2008 Subaru Impreza WRX\u003cbr\u003e\n2008 Subaru Impreza WRX STI\u003cbr\u003e\n2008 Subaru Legacy GT Limited\u003cbr\u003e\n2008 Subaru Legacy GT spec.B\u003cbr\u003e\n2009 Subaru Impreza 2.5 GT\u003cbr\u003e\n2009 Subaru Impreza WRX\u003cbr\u003e\n2009 Subaru Impreza WRX Premium\u003cbr\u003e\n2009 Subaru Impreza WRX STI\u003cbr\u003e\n2009 Subaru Legacy GT Limited\u003cbr\u003e\n2009 Subaru Legacy GT spec.B\u003cbr\u003e\n2010 Subaru Impreza 2.5 GT\u003cbr\u003e\n2010 Subaru Impreza WRX\u003cbr\u003e\n2010 Subaru Impreza WRX Limited\u003cbr\u003e\n2010 Subaru Impreza WRX Premium\u003cbr\u003e\n2010 Subaru Impreza WRX STI\u003cbr\u003e\n2010 Subaru Impreza WRX STI Special Edition\u003cbr\u003e\n2010 Subaru Legacy 2.5GT\u003cbr\u003e\n2011 Subaru Impreza WRX\u003cbr\u003e\n2011 Subaru Impreza WRX Limited\u003cbr\u003e\n2011 Subaru Impreza WRX Premium\u003cbr\u003e\n2011 Subaru Impreza WRX STI\u003cbr\u003e\n2011 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Edition\u003cbr\u003e\n2015 Subaru WRX STI Limited\u003cbr\u003e\n2016 Subaru WRX Base\u003cbr\u003e\n2016 Subaru WRX Limited\u003cbr\u003e\n2016 Subaru WRX Premium\u003cbr\u003e\n2016 Subaru WRX STI Base\u003cbr\u003e\n2016 Subaru WRX STI Limited\u003cbr\u003e\n2016 Subaru WRX STI Series.HyperBlue\u003cbr\u003e\n2017 Subaru WRX Base\u003cbr\u003e\n2017 Subaru WRX Limited\u003cbr\u003e\n2017 Subaru WRX Premium\u003cbr\u003e\n2017 Subaru WRX STI Base\u003cbr\u003e\n2017 Subaru WRX STI Limited\u003cbr\u003e\n2018 Subaru WRX Base\u003cbr\u003e\n2018 Subaru WRX Limited\u003cbr\u003e\n2018 Subaru WRX Premium\u003cbr\u003e\n2018 Subaru WRX STI Base\u003cbr\u003e\n2018 Subaru WRX STI Limited\u003cbr\u003e\n2018 Subaru WRX STI Type RA\u003cbr\u003e\n2019 Subaru WRX Base\u003cbr\u003e\n2019 Subaru WRX Limited\u003cbr\u003e\n2019 Subaru WRX Premium\u003cbr\u003e\n2019 Subaru WRX STI Base\u003cbr\u003e\n2019 Subaru WRX STI Limited\u003cbr\u003e\n2019 Subaru WRX STI S209\u003cbr\u003e\n2020 Subaru 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