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Holley EFI Main Power Harness 558-308

Holley EFI Main Power Harness 558-308
$141.99 ea
NEWOut of stock with HOLLEY PERFORMANCE PRODUCTS as of 02/29/2024
Model: 4007806
STANDARD
DELIVERY
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.
Installation Notes:
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.

About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!

Downloads:

Download Name File Size
efi_selection_chart62914.pdf836.71KB

Videos:

Specifications:

Emission Code 3
Fuse 40 AMP max
Harness Application Universal
Harness Type Main Battery Power
Part Type Ignition Harness
Product Type Power Harness
Wire Diameter 10 AWG
Wire Length 13 Feet
Wire Series Automotive TXL

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Holley EFI Main Power Harness 558-308:
Classic Chevy 2024