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137584Secondary Air Injection Check Valve
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APDTY 137584 Air Injection Reaction Check Valve


  • Left
  • Match Vehicle To Compatibility Chart To Ensure Exact Fitment
  • Compatible With 2005-2013 Subaru Forester
  • Left
  • Compatible With 2006-2014 Subaru Impreza
  • Left
  • Compatible With 2013-2019 Subaru WRX STI
  • Left
  • See Buyers Guide for compatibility
Make Model Qualifiers Year
Subaru Forester
  • Position: Left
  • 2.5L H4 2458cc
  • EJ255
 2005-2013
Subaru Impreza
  • Position: Left
  • 2.5L H4 2458cc
  • EJ255
 2006-2014
Subaru Impreza
  • Position: Left
  • 2.5L H4 2458cc
  • EJ257
 2007-2014
Subaru WRX STI
  • Position: Left
  • 2.5L H4 2458cc
  • EJ257
 2013-2019
Subaru WRX STI
  • Position: Left
  • 2.5L H4 2458cc
 2020-2021