J1 A B I O CONNECTOR HP and DOM

Name: J1 A B I O CONNECTOR HP and DOM
Brand: Holley
SKU: H00E 558-400
Price: 135.95 USD
Availability: InStock

$147.95 $135.95 Save $12.00

SKU: H00E 558-400

In Stock

Ships by Aug 5

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Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 558-400

Great for applications requiring minimal Input/output wiring.

Connector J1A/B Inputs/Outputs Auxiliary Harness for Terminator X, HP, and Dominator EFI systems

MIA's Description

The Holley EFI 558-400 is an auxiliary wiring harness designed for Holley EFI systems. This harness connects to the 8-pin Metri-Pack Input/Output connector found in most Holley EFI main harnesses. It features 8 Metri-Pack pins and 4 input wires, with loose lead wires on one end for custom connections.

Fitment

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Specifications

Brand	Holley
Part Number	H00E 558-400
Weight	0.85 lb

Videos

Holley Terminator X Input/output Wiring

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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