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    NGK Iridium IX Spark Plug Box of 4 (DR9EIX)

    Vendor: NGK
    Part Number: 4772
    Regular Price $90.60

    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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    NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

    • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
    • Trivalent metal plating for superior anti-corrosion and anti-seizing properties
    • Outstanding acceleration, high fuel efficiency and durability
    • Fine iridium tip ensures durable and consistent spark

    This Part Fits:

    Year Make Model Submodel
    1992 Ducati 888 Strada Base
    1980-1981 Honda CB900C Custom Base
    1981 Honda CB900F Super Sport Base
    1985-1986,1988-1990 Kawasaki EN450A 454 LTD Base
    1990-1996 Kawasaki EN500 Vulcan 500 Base
    1996-2009 Kawasaki EN500C Vulcan 500 LTD Base
    1994-1996 Kawasaki EX500 Ninja 500 Base
    1997-2009 Kawasaki EX500 Ninja 500R Base
    1981-1982 Kawasaki KZ305 CSR Base
    1982 Kawasaki KZ305B CSR Belt Base
    1987-1988 Kawasaki KZ305B LTD Base
    1986-1987 Kawasaki ZL600 Eliminator Base
    1990-1991 Kawasaki ZR550 Zephyr Base
    1991-1992 Kawasaki ZR750C Zephyr Base
    1985-1997 Kawasaki ZX600 Ninja 600R Base
    1990-1997 Kawasaki ZX600 Ninja ZX-6 Base
    1995-1997 Kawasaki ZX600 Ninja ZX-6R Base
    2003-2004 KTM 660 Rally Base
    1992-1993 Lamborghini Diablo Base
    1994 Lamborghini Diablo SE30
    1994-1996 Lamborghini Diablo VT
    1998 Moto Guzzi V10 Centauro GT Base
    1998 Moto Guzzi V10 Centauro Sport Base
    1980-1981 Suzuki GS250T Base
    1982-1983 Suzuki GS300L Base
    1983-1986 Suzuki GS550E Base
    1983-1986 Suzuki GS550ES Base
    1983-1986 Suzuki GS550L Base
    1997-2005 Suzuki GSF1200S Bandit Base
    1989-1992 Suzuki GSX-R1100 Base
    1986-1987 Suzuki GSX-R750 Base
    1988-1993 Suzuki GSX1100F Katana Base
    1991-1993 Suzuki GSX1100G Base
    1983 Suzuki XN85 Turbo Base
    1973-1974 Yamaha TX500 Base
    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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