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    Sale!

    Holley EFI CAN Extension Harness, 4FT | 558-424

    Vendor: Holley EFI
    Part Number: 558-424
    Save $8.76
    $63.19 $71.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    Product DetailsFAQReviewsRelated Products

    This 4-foot CAN extension harness lets you extend the CAN bus connection between a Holley EFI system and an external CAN-based device, such as a Racepak data logger.

    Specifications:

    • Length: 4 ft.
    • Application: Universal — Racepak and other external CAN-based devices
    • Product Type: CAN Extension Harness
    • Part Number: 558-424

    Use this harness to relocate or extend a CAN connection point without splicing into the factory Holley EFI main harness.

    FAQ

    How long is this CAN extension harness?

    This harness measures 4 feet, giving extra reach when connecting a Holley EFI system to an external CAN device.

    What is this harness used for?

    It extends the CAN bus connection between a Holley EFI system and an external CAN-based accessory, such as a Racepak data logger.

    Does installing this harness require splicing into the main harness?

    No, it plugs directly into the existing CAN circuit as an extension, without any splicing required.

    What part number is this harness?

    This 4-foot CAN extension harness is Holley part number 558-424.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy
    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy
    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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