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Holley 558-400 - Connector J1A/B Input / Outputs Auxiliary Harness

Was: $88.27
Sale: $81.03
Save: 8%
Save: $7.24


Holley 558-308 - J1A/B Input / Output Auxiliary Harness for HP and Dominator ECUs. 

This Harness can be used to wire up a variety of Inputs and Outputs including Boost Control, Methanol Injection, Fan Control, RPM Controls, Torque Converter Lockup and much more! 


  • HOL-558-400
  • HOL-558-400
  • Holley
  • New

Shipping Information

  • Item Requires Shipping
  • 2.0 lbs.
  • W8.0000” x H8.0000” x L2.0000”


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