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

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. Twisted Steel Long Tube Header 304 Stainless Steel Subaru Impreza WRX/STi/Legacy 02-21 H4-2.0L (t)/2.5L (t)

• Works with Factory Exhaust System with No Modifications Necessary
• Constructed out of Mandrel-Bent 304 Stainless Steel Tubing
• Optimized Tube Lengths for Improve Flow and Performance
• Laser Cut Flanges are used for a Durable Leak-Free Seal
• 100% TIG-Welded for Strength and Durability

Brief Description: 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.

Performance Benefits: 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.

• Material: Mandrel-bent 304 stainless steel tubing for corrosion resistance and long-term durability.
• Tube Design: Unequal-length primary tubes enhance exhaust scavenging and produce the traditional boxer exhaust note.
• Collectors: Formed collectors reduce turbulence and help maintain exhaust gas velocity.
• Welding: 100% TIG-welded construction provides strong, consistent joints for demanding use.
• Flanges: Factory-style laser-cut flanges support a durable, leak-resistant seal.
• Installation: Direct-fit design uses factory exhaust locations without cutting or other modifications.
• Compatibility: Designed for select Subaru Impreza WRX, STI, and Legacy models with 2.0L or 2.5L turbocharged H4 engines.
• Manufacturing: Engineered and manufactured in the USA by aFe POWER.

What's Included: 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.

Fitment: 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.

Features:

• Mandrel-bent 304 stainless steel tubing provides excellent strength and corrosion resistance.
• Unequal-length primary tubes improve exhaust scavenging and support the signature Subaru boxer rumble.
• Formed collectors reduce turbulence and help improve exhaust gas velocity.
• Direct-fit design works with factory exhaust locations without cutting or modifications.
• Laser-cut factory-style flanges promote a secure, leak-resistant seal.
• 100% TIG-welded construction delivers consistent strength and durability.
• Optimized tube lengths help improve exhaust flow, horsepower, torque, and throttle response.
• Engineered and manufactured in the USA by aFe POWER.

Fitments:
2002 Subaru Impreza WRX
2003 Subaru Impreza WRX
2004 Subaru Impreza WRX
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX
2005 Subaru Impreza WRX STI
2005 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2006 Subaru Impreza WRX
2006 Subaru Impreza WRX Limited
2006 Subaru Impreza WRX STI
2006 Subaru Impreza WRX TR
2006 Subaru Legacy GT
2006 Subaru Legacy GT spec.B
2007 Subaru Impreza WRX
2007 Subaru Impreza WRX Limited
2007 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2007 Subaru Impreza WRX TR
2007 Subaru Legacy GT Limited
2007 Subaru Legacy GT spec.B
2008 Subaru Impreza WRX
2008 Subaru Impreza WRX STI
2008 Subaru Legacy GT Limited
2008 Subaru Legacy GT spec.B
2009 Subaru Impreza 2.5 GT
2009 Subaru Impreza WRX
2009 Subaru Impreza WRX Premium
2009 Subaru Impreza WRX STI
2009 Subaru Legacy GT Limited
2009 Subaru Legacy GT spec.B
2010 Subaru Impreza 2.5 GT
2010 Subaru Impreza WRX
2010 Subaru Impreza WRX Limited
2010 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2010 Subaru Legacy 2.5GT
2011 Subaru Impreza WRX
2011 Subaru Impreza WRX Limited
2011 Subaru Impreza WRX Premium
2011 Subaru Impreza WRX STI
2011 Subaru Impreza WRX STI Limited
2011 Subaru Legacy 2.5GT
2012 Subaru Impreza WRX
2012 Subaru Impreza WRX Limited
2012 Subaru Impreza WRX Premium
2012 Subaru Impreza WRX STI
2012 Subaru Impreza WRX STI Limited
2012 Subaru Legacy 2.5GT
2013 Subaru Impreza WRX
2013 Subaru Impreza WRX Limited
2013 Subaru Impreza WRX Premium
2013 Subaru Impreza WRX STI
2013 Subaru Impreza WRX STI Limited
2014 Subaru Impreza WRX
2014 Subaru Impreza WRX Limited
2014 Subaru Impreza WRX Premium
2014 Subaru Impreza WRX STI
2014 Subaru Impreza WRX STI Limited
2015 Subaru WRX Base
2015 Subaru WRX Limited
2015 Subaru WRX Premium
2015 Subaru WRX STI Base
2015 Subaru WRX STI Launch Edition
2015 Subaru WRX STI Limited
2016 Subaru WRX Base
2016 Subaru WRX Limited
2016 Subaru WRX Premium
2016 Subaru WRX STI Base
2016 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2017 Subaru WRX Base
2017 Subaru WRX Limited
2017 Subaru WRX Premium
2017 Subaru WRX STI Base
2017 Subaru WRX STI Limited
2018 Subaru WRX Base
2018 Subaru WRX Limited
2018 Subaru WRX Premium
2018 Subaru WRX STI Base
2018 Subaru WRX STI Limited
2018 Subaru WRX STI Type RA
2019 Subaru WRX Base
2019 Subaru WRX Limited
2019 Subaru WRX Premium
2019 Subaru WRX STI Base
2019 Subaru WRX STI Limited
2019 Subaru WRX STI S209
2020 Subaru WRX STI Base
2020 Subaru WRX STI Limited
2021 Subaru WRX STI Base
2021 Subaru WRX STI Limited

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1