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HKS Equal Length Header / Exhaust Manifold - 04-14 Impreza WRX STI & 15+ WRX STI

04-07 STI, 04-08 FXT, 05-09 LGT, 06-07 WRX, 08-14 STI, 08-14 WRX, 15 STI, 18 STI, HKS

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The HKS Equal Length Header (Exhaust Manifold) for the Subaru EJ25 motor works on the 04-14 Impreza WRX STI and the new 15+ WRX STI. It replaces the OEM header for better flow and performance using a 4-1 setup to improve low range and high range performance (mid range is at oem level) with all things the same. Increase exhaust flow with improved spool, providing a win win situation.

This is a great product for those looking to push power from their OEM turbo setup or those using OEM style 2-bolt flanged pipes. This is also a great addition to lower EGT.

This item includes all necessary hardware for an easy installation.

**Going from unequal to equal length will change exhaust note from rumble to a higher pitch**

  • Subaru WRX STI [VAB] (2015, 2016, 2017, 2018, 2019)
  • Subaru Impreza WRX STI [GVB] (2011, 2012, 2013, 2014)
  • Subaru Impreza WRX STI [GRB] (2008, 2009, 2010, 2011, 2012, 2013, 2014)
  • Subaru Impreza WRX STI [GDB] (2004, 2005, 2006, 2007)
  • 4-1 Exhaust Manifold (almost 4-2-1 setup)
  • Quad 42.7mm to dual to single 52mm piping
  • Increasing Low/High range power (mid range same as OEM)
  • Can be used with the oem Oil Pan
  • Made of SUH409 Steel
  • Made in Japan


  • 14019-AF002
  • 14019-AF002
  • HKS
  • New


Shipping Information

  • Item Requires Shipping
  • 25.0 lbs.
  • Free ground shipping on all order over $100.00 (some exclusions may apply)

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