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Holley 558-308 - Main Power Harness for Avenger EFI, HP EFI and Dominator EFI

Pricing: $88.10


Holley 558-308 - Main Power Harness for Avenger EFI, HP EFI, & Dominator EFI

This Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3/8" ring terminals and shrink tube (not pictured) . The harness is fuse protected and covered in braided split loom for additional abrasion protection .

The Main Power Harness MUST be connected directly to the Battery terminals.   Do not connect them to any other location such as a disconnect switch, starter solenoid or distribution lug. The harness length is 13 feet. If you need to extend the length do so with 8 AWG or larger multi-strand wire.


Brand  Holley EFI 
Fuse  40 AMP Max
Harness Type  Power Harness 
Wire Diameter       10 awg 
Wire Length  13 Feet 
Wire Series  Automotive TXL 



  • HOL-558-308
  • HOL-558-308
  • Holley
  • New

Shipping Information

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

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