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    • MSD Black Super Conductor Spark Plug Wire Set, SBC Sprintcar Close Fit, Racing Use Only | 31543
    • MSD Black Super Conductor Spark Plug Wire Set, SBC Sprintcar Close Fit, Racing Use Only | 31543
    • MSD Black Super Conductor Spark Plug Wire Set, SBC Sprintcar Close Fit, Racing Use Only | 31543
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    • 8.5Mm Super Conductor Wire Set For Sbc Sprintcar, Close Fit, In Black Features A Helically-Wound Copper Alloy Conductor Which Has Only 40 50 Ohms Of Resistance Per Foot MSD Ignition
    • 8.5Mm Super Conductor Wire Set For Sbc Sprintcar, Close Fit, In Black Features A Helically-Wound Copper Alloy Conductor Which Has Only 40 50 Ohms Of Resistance Per Foot MSD Ignition
    • 8.5Mm Super Conductor Wire Set For Sbc Sprintcar, Close Fit, In Black Features A Helically-Wound Copper Alloy Conductor Which Has Only 40 50 Ohms Of Resistance Per Foot MSD Ignition
    • 8.5Mm Super Conductor Wire Set For Sbc Sprintcar, Close Fit, In Black Features A Helically-Wound Copper Alloy Conductor Which Has Only 40 50 Ohms Of Resistance Per Foot MSD Ignition
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    Sale!

    MSD Black Super Conductor Spark Plug Wire Set, SBC Sprintcar Close Fit, Racing Use Only | 31543

    Vendor: MSD
    Part Number: 31543
    Save $26
    Sale Price $207.95 Regular Price $233.95

    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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    Built for high-current magneto ignition systems, this MSD 8.5mm Super Conductor wire set uses a copper alloy conductor that handles the magneto's voltage better than stainless steel while keeping resistance low. The conductor is tightly wound around a ferro-spiral core to choke off EMI, and the silicone sleeve resists high heat and abrasion, delivering the strongest spark possible in a close-fit Small Block Chevy sprintcar application.

    Specifications:

    • Brand: MSD
    • Product Type: Spark Plug Wire Set
    • Application: Small Block Chevy, Sprintcar close fit
    • Wire Diameter / Outside Diameter: 8.5mm
    • Color / Insulation Color: Black
    • Conductor Core: Ferro-Spiral copper alloy
    • Boot Material: Silicone
    • Boot Type / Spark Plug Boot Angle: 90 degrees
    • Resistance: 40-50 Ohms Per Foot
    • Sleeved: No
    • Wire Series: 8.5 Super Conductor
    • Warning: California Proposition 65
    • Part Number: 31543

    Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).

    FAQ

    Is this wire set legal for street use?

    No. This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).

    What application is this wire set built for?

    It's a close-fit 8.5mm Super Conductor wire set for Small Block Chevy sprintcar applications using a 90-degree boot.

    Why is the copper alloy conductor used with a magneto?

    The special copper alloy conductor is strong enough to handle the high current and voltage of a magneto and is a better conductor than stainless steel, while retaining high EMI suppression.

    What is the boot angle on this wire set?

    Both the spark plug and cap boots are set at a 90-degree angle for a close fit.

    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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