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    Sale!

    Holley Unterminated 16-Injector MPFI Harness, Bosch EV1-Style Connectors | 558-207

    Vendor: Holley EFI
    Part Number: 558-207
    Save $184
    $174.95 $358.95

    In Stock

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    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
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    Product DetailsFAQReviewsRelated Products

    This unterminated 16-injector MPFI harness is terminated at the injector connectors in Bosch EV1 style, with the main harness left unterminated for custom assembly. It's designed for use with HP EFI and Dominator EFI systems.

    Specifications:

    • Harness Application: Universal
    • Harness Type: Injector
    • Injector Count: 16
    • Injector Connector: Bosch EV1-style
    • Product Type: Universal Unterminated Injector Harness
    • Includes: All connectors, pins, terminals, and loom needed
    • Part Number: 558-207

    Harness must be assembled by the installer and requires crimping Metripack150 connectors on the unterminated end.

    FAQ

    What systems is the 558-207 harness designed for?

    It's designed for use with Holley HP EFI and Dominator EFI systems supporting up to 16 injectors.

    Is this harness ready to install out of the box?

    No. It's unterminated on the main harness side and must be assembled, which requires crimping Metripack150 connectors.

    What connector style is used at the injectors?

    The injector-side connectors are terminated in Bosch EV1 style.

    What's included with the harness?

    All connectors, pins, terminals, and loom needed for assembly are included.

    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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