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    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
    • Super Conductor 8.5Mm Spark Plug Wire Set 8 Cylinder 90 Degree Plug/90 Degree Cap For Engines With Late-Model Type (Hei Spark Plug Top) Distributor Caps (Ford Duraspark Or MSD Cap-A-Dapt) MSD Ignition
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    Sale!

    MSD Super Conductor 8.5mm Spark Plug Wire Set, 8-Cyl Universal 90° Plug/Cap | 31229

    Vendor: MSD
    Part Number: 31229
    Save $19
    Sale Price $145.95 Regular Price $164.95

    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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    This universal MSD Super Conductor wire set ships with the spark plug terminal and boot pre-installed, leaving the distributor-cap end open so it can be cut to the exact length needed and finished with the included Mini-Stripper-Crimper. It's built for engines using late-model HEI-style spark plug top distributor caps, including Ford Duraspark and MSD Cap-A-Dapt setups.

    Specifications:

    • Boot Material: Silicone
    • Core: Copper
    • Insulation Color: Red
    • Resistance: 40-50 ohms per foot
    • Spark Plug Boot Angle: 90°
    • Wire Diameter: 8.5mm
    • Wire Series: 8.5 Super Conductor
    • Application: Universal V8
    • Wire Lengths: two 56 in., two 50 in., two 42 in., two 32 in., plus a 32 in. coil wire
    • Part Number: 31229

    Includes distributor cap boots and terminals along with the Mini-Stripper-Crimper needed to finish the open end.

    FAQ

    What comes pre-installed on this wire set?

    The spark plug terminal and boot are pre-installed; the distributor-cap end is left open for custom-length installation.

    What tool is included to finish the wires?

    The Mini-Stripper-Crimper, used to strip and crimp the terminal after cutting the wire to length.

    What distributor cap styles is this set designed for?

    Late-model HEI spark-plug-top style caps, including Ford Duraspark and MSD Cap-A-Dapt.

    What wire lengths are included?

    Two 56 in., two 50 in., two 42 in., and two 32 in. plug wires, plus a 32 in. coil wire.

    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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