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137591Secondary Air Injection Check Valve
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APDTY 137591 Secondary A.I.R. Combination Valve


  • Match Vehicle To Compatibility Chart To Ensure Exact Fitment
  • Compatible With 2001-2003 BMW 525i
  • Compatible With 1999-2000 BMW 528i
  • Compatible With 2001-2003 BMW 530i
  • See Buyers Guide for compatibility
Make Model Qualifiers Year
BMW 525i
  • Position: N/A
  • 2.5L L6 2494cc 152ci
 2001-2003
BMW 528i
  • Position: N/A
  • 2.8L L6 2793cc
 1999-2000
BMW 530i
  • Position: N/A
  • 3.0L L6 2979cc
 2001-2003