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    Sale!

    Holley J3 Connector Kit, OEM-Quality Electrical Connector | 570-347

    Vendor: Holley EFI
    Part Number: 570-347
    Save $7.70
    Sale Price $56.25 Regular Price $63.95

    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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    The J3 connector kit from Holley EFI gives builders and technicians a way to source a single I/O connector without having to purchase an entire wiring harness connector kit. It's part of the J1A through J4 lineup of OEM-quality connectors Holley offers for custom and repair wiring work.

    Specifications:

    • Connector type: J3, electrical pin connector
    • OEM-quality connector and pins
    • Black connector color
    • Ideal for DIY or custom wiring harness builds
    • Part Number: 570-347

    Sold as an individual connector kit — no need to buy a full harness kit if only one I/O connector is needed.

    FAQ

    What is the Holley J3 connector kit used for?

    It provides a single OEM-quality I/O connector for custom or repair wiring harness work on Holley EFI systems, without requiring a full connector kit purchase.

    Does the kit include pins?

    Yes, the J3 connector kit includes OEM-quality connectors and pins.

    What color is the connector?

    The connector is black.

    Can this be used for a custom wiring harness build?

    Yes, it's designed to be a good fit for DIY or custom wiring harness builds in any application.

    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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