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Holley EFI 558-434 Digital Dash I/O Adapter with Terminated Vehicle Harness

Manufacturer

Picture for manufacturer Holley EFI

Part Number

558-434
8 reviews
Sale Price

$419.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Holley EFI Digital Dash I/O Adapter expands the functionality of your 7-inch digital dash display by providing ten additional inputs and outputs for enhanced monitoring and control capabilities. This adapter is designed to integrate seamlessly with your Holley digital dash system, allowing you to monitor more sensors and control additional outputs beyond the dash's standard capacity.

Key Features:

  • Provides 10 additional inputs/outputs for expanded dash functionality
  • Includes terminated vehicle harness for simplified installation
  • Compatible with Holley 7-inch digital dash displays
  • Features waterproof 26-pin connector similar to Holley EFI system connectors
  • Includes USB memory stick with firmware update to enable adapter support
  • Professional-grade weatherproof connections for reliable performance

This I/O expansion adapter is ideal for racers and enthusiasts who need to monitor additional engine parameters, control accessories, or integrate more sensors into their dash display. The waterproof connector design ensures reliable connections in harsh engine bay environments, while the plug-and-play terminated harness simplifies installation.

Products specifications

Brand

Holley EFI

Category

Electrical, Lighting and Body

Emission Code

5

Part Type

Dashboard Wiring Harness

Product Type

Digital Dash Harness / Adapter / Module

Sub Category

Wire, Cable and Related Components

Warning

California Proposition 65

Thanks

Happy, just didn't get confirmation email after order was placed.

Smooth simple clean ordering process. Great very competitive pricing.

Overall experience was good until we had to return the item because it wouldn't work with the seat we had. Problem is that when we tred to get the specs on the item you didn't have any of the measurements available. So I was told that if it didn't work I could retun it. When I did you said it was because I ordered wrong so I would be charged to return it. It was wrong because you didn't have any info on the actual size and the only way to see if it would work was to order it.

Super fast ship and best price!

Fast and easy checkout. System allowed me to purchase the prop and ship it to my son's address in time for Christmas.

N/A

Great transaction

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