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THY-515-LS-C Thorley Header 2004-2012 4Runner V6, 2005-2011 Tacoma V6, 2007-2012 FJ Cruiser



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This header fits the new version of the Toyota 1GR-FE engine with the dual VVTi cylinder heads.  This engine is found in the 2005-2011 Tacoma 2010-2012 FJ Cruiser and 2010-2012 4Runner with the V6 engine.  Will also fit Hilux and Prado.

These headers DO NOT FIT the 2013+ FJ and 4Runner in the US Domestic market with the air injection system.  2013 trucks from other markets that do not have the air injection system will still use these headers.  Does not fit 2007+ Tundra V6.

  • All tubing is made from high quality 304 Grade Stainless steel
  • Awesome Power Gains
  • 1 5/8″ primary tube size
  • Doug Thorley Lifetime Limited Warranty
  • Inside and Outside Ceramic Coating
  • Completely Bolt In – No Cutting or Welding
  • Not CARB approved – For Off Highway Use in California
  • A Higher Performance Sound (A More Present & Deeper Tone)

The 1GR-FE 4.0L V6 engine has front catalytic converters built into the exhaust manifold assembly. This performance header system replaces that entire assembly including the catalytic converter. This allows for free flowing, long primary tubes that enhance performance.

When the front catalytic converters are removed, the ECU will diagnose a fault setting a check engine light.  This is for off road racing use only and not for use on public roads.

Note: The stock crush to seal gaskets used in the connections between the Y pipe and the exhaust manifolds should not be reused. These gaskets should be replaced. You can select the “ADD GASKETS” box below to have two heavy duty additional crush to seal gaskets included in your order.  Doug Thorley recommends that the stock cylinder head gaskets should be reused and new cylinder head gaskets are not included.


Year Make Model Engine
Year Make Model Engine
2003 - 2012 Toyota 4Runner V6 4.0L 1GR-FE
2005 - 2011 Toyota Tacoma V6 4.0L 1GR-FE
2007 - 2012 Toyota FJ Cruiser V6 4.0L 1GR-FE
Weight 30 lbs
Dimensions 29 × 15 × 10 in


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