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Holley EFI 558-444 Digital Dash Service Harness USB & CAN Bus Replacement

Manufacturer

Picture for manufacturer Holley EFI

Part Number

558-444
8 reviews
Sale Price

$31.84

1 left at this price

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Holley EFI 558-444 Digital Dash Service Harness is a direct replacement wiring harness designed for use with Holley EFI Digital Dash display systems. This harness provides the essential connectivity needed to interface your digital dash with vehicle data networks and PC-based tuning or update software.

Key Features:

  • Direct Replacement – OEM-style service harness for Holley EFI Digital Dash units
  • USB Connector Wiring – Enables connection to a laptop or PC for firmware updates, configuration, and data logging via Holley EFI software
  • CAN Bus Connector Wiring – Provides CAN (Controller Area Network) communication wiring to integrate the digital dash with Holley EFI ECUs and other CAN-compatible modules
  • Black Finish – Clean, professional appearance that integrates seamlessly into engine bay or cockpit wiring
  • Holley EFI Quality – Built to Holley's exacting standards for reliable, long-term performance in demanding automotive environments

Whether you are replacing a damaged harness or restoring full functionality to your Holley EFI Digital Dash system, the 558-444 service harness ensures proper USB and CAN Bus communication between your dash, ECU, and tuning devices.

Products specifications

Brand

Holley EFI

Category

Gauges and Gauge Accessories

Color

Black

Emission Code

5

Grade Type

Performance

Product Type

Harness Kit

Universal Or Specific Fit

Specific

Warning

California Proposition 65

Fast shipping

Lovely experience would definitely buy again

Good service and good price.

Easy to navigate the ordering process and received the product in a timely manner.

Great prices Free Shipping fast delivery

The website was easy to navigate and your facility was the only one that had the product.

The delivery was late it was FedEx fault but thmotorsports refund my ten dollars charges for two days shipping. Wonderful service i will order from them again and again.

Great service from chat

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