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    • NGK Iridium Stock Heat Spark Plugs Box of 4 (BPR7EIX)
    • NGK Iridium Stock Heat Spark Plugs Box of 4 (BPR7EIX)
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    NGK Iridium Stock Heat Spark Plugs Box of 4 (BPR7EIX)

    Vendor: NGK
    SKU: NGK4055
    Regular Price $37.60
    Fast Fulfillment: In-stock parts typically ship same day or next business day.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    Professional, Enthusiast-Driven Customer Support
    International Shipping Available - Contact Us!
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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
    1991 Alfa Romeo 164 Base
    1991-1993 Alfa Romeo 164 L
    1969-1971 Alfa Romeo Berlina Base
    1967-1968 Alfa Romeo Duetto 1600 Spider
    1964-1967 Alfa Romeo Giulia Spider
    1967-1968 Alfa Romeo Giulia Sprint Base
    1969-1974 Alfa Romeo GT Veloce Base
    1964 Alfa Romeo GTC Base
    1967-1968 Alfa Romeo GTV Base
    1987-1989 Alfa Romeo Milano Verde
    1969-1971,1991-1994 Alfa Romeo Spider Base
    1985-1990 Alfa Romeo Spider Graduate
    1986-1990 Alfa Romeo Spider Quadrifoglio
    1970-1994 Alfa Romeo Spider Veloce
    1972-1973 Audi 100 Series Base
    1972-1973 Audi 100 Series GL
    1972-1977 Audi 100 Series LS
    1985 Audi 5000 CS Turbo
    1984-1985 Audi 5000 S Turbo
    1983-1985 Audi Quattro Base
    1976-1984 BMW R100RS Base
    1978-1985 BMW R100RT Base
    1976-1980 BMW R100S Base
    1978-1980 BMW R100T Base
    1978-1985 BMW R45 Base
    1969-1973 BMW R50/5 Base
    1969-1974 BMW R60/5 Base
    1973-1976 BMW R60/6 Base
    1976-1979 BMW R60/7 Base
    1978-1987 BMW R65 Base
    1981-1985 BMW R65LS Base
    1989 Chrysler Conquest TSi
    2005-2006 Cobra CM50 Base
    2019 Cobra CX50 FWE Base
    2019 Cobra CX50 P3 Base
    2019 Cobra CX50-JR Base
    2019 Cobra CX50-SR Base
    2007-2009 Cobra CX65 Base
    2007-2009 Cobra ECX50 Base
    2006-2009 Cobra ECX70 Base
    2005-2006 Cobra KING Base
    2006 Cobra P3 Base
    1984-1986 Dodge Colt DL
    1985-1988 Dodge Colt Premier
    1975-1980 Ferrari 308 GTB Base
    1983-1984 Ferrari 308 GTB Quattrovalvole
    1981-1982 Ferrari 308 GTBi Base
    1977-1980 Ferrari 308 GTS Base
    1983-1984 Ferrari 308 GTS Quattrovalvole
    1981-1982 Ferrari 308 GTSi Base
    1968-1970 Ferrari 365 GT Base
    1976 Ferrari 365 GT4 2+2
    1973-1974 Ferrari 365 GT4 Base
    1975 Ferrari 365 GT4 BB
    1975 Ferrari 365 GT4 BB Competizione
    1974 Ferrari 365 GT4 BB Base
    1968-1974 Ferrari 365 GTB/4 Daytona
    1968-1970 Ferrari 365 GTC Base
    1971-1972 Ferrari 365 GTC/4 Base
    1968-1970 Ferrari 365 GTS Base
    1970-1974 Ferrari 365 GTS/4 Daytona
    1975-1979 Ferrari Dino 308 GT4 Base
    1967-1971 Fiat 850 Base
    1970-1971 Fiat 850 Racer
    1967-1973 Fiat 850 Spider
    1978-1979 Honda Civic CVCC
    1989 Honda TRX250R Base
    1982 Kawasaki AR80 Base
    1964-1966 Lamborghini 350GT Base
    1966-1967 Lamborghini 400GT Base
    1974 Lamborghini Countach Base
    1975-1976 Lamborghini Countach LP400
    1981-1982 Lamborghini Countach LP400S
    1975-1978 Lamborghini Espada S3
    1968-1969 Lamborghini Islero S
    1975-1976 Lamborghini Jarama 400GTS
    1966-1967 Lamborghini Miura Base
    1967-1974 Lotus Elan 2
    1969-1970 Lotus Elan 2S
    1972-1974 Lotus Elan 2S 130
    1962-1975 Lotus Elan Base
    1968-1971 Lotus Elan S4
    1971-1974 Lotus Elan Sprint
    1989 Lotus Esprit Turbo
    1989-1991 Lotus Esprit Turbo SE
    1967-1975 Lotus Europa Base
    1967-1970 Lotus Europa S1
    1969-1972 Lotus Europa S2
    1971-1974 Lotus Europa Special
    1971-1974 Lotus Europa Twin
    1969-1975 Lotus Seven Base
    1989-1990 Maserati 228i Base
    1986-1987 Maserati 425 Base
    1987 Maserati Biturbo Base
    1968-1970 Maserati Mistral Base
    1986-1987,1989-1991 Maserati Spyder Base
    1954-1959 Mercedes-Benz 300SL Base
    1984-1988 Mitsubishi Cordia Turbo
    2003-2005 Mitsubishi Lancer Evolution
    2005 Mitsubishi Lancer Evolution MR
    2005 Mitsubishi Lancer Evolution RS
    1985-1988 Mitsubishi Mirage Turbo
    1989 Mitsubishi Starion ESi-R
    1984-1988 Mitsubishi Tredia Turbo
    1971-1972 Peugeot 304 Base
    1984-1986 Plymouth Colt DL
    1985-1986 Plymouth Colt Premier
    1994-1995 Polaris SL 650 Base
    1997 Polaris SL 700 Deluxe Base
    1994-1995 Polaris SL 750 Base
    1995 Polaris SLT 750 Base
    1974 Porsche 911 Base
    1969 Porsche 911 E
    1969,1974-1977 Porsche 911 S
    1980-1983 Porsche 911 SC
    1969-1971 Porsche 911 T
    1977-1982 Porsche 924 Base
    1979-1982 Porsche 924 Turbo
    1989 Porsche 944 S2
    1978-1995 Suzuki DS80 Base
    1980-1981 Suzuki TS185 Base
    1980-1981 Suzuki TS250 Base
    1980-1982 Yamaha SR250 Base
    1981 Yamaha SR250T Base
    1978-1979 Yamaha SR500 Base
    1980-1982 Yamaha TT250 Base
    1976-1981 Yamaha TT500 Base
    1980-1983 Yamaha XJ650 Maxim Base
    1982 Yamaha XJ650R Seca Base
    1982-1983 Yamaha XJ750 Maxim Base
    1983 Yamaha XJ750M Mid-Max Base
    1981-1983 Yamaha XJ750R Seca Base
    1977-1981 Yamaha XS400 Base
    1977-1981 Yamaha XS650 Base
    1977-1979 Yamaha XS750 Base
    1980-1981 Yamaha XS850 Base
    1980-1983 Yamaha XT250 Base
    1976-1979 Yamaha XT500 Base
    1984-1985 Yamaha XV1000 Virago Base
    1986-1999 Yamaha XV1100 Virago Base
    1983-1984 Yamaha XV500 Virago Base
    1987-1988,1990,1993-2000 Yamaha XV535 Virago Base
    1984-1987 Yamaha XV700 Virago Base
    1981-1983,1988-1997 Yamaha XV750 Virago Base
    1982-1983 Yamaha XV920 Virago Base
    1983 Yamaha XV920M Mid-Virago Base
    1999-2009 Yamaha XVS1100 V Star 1100 Custom Base
    2000-2009 Yamaha XVS1100A V Star 1100 Classic Base
    2002-2009 Yamaha XVS1100AT V Star 1100 Silverado Base
    1982-1983 Yamaha YT175 Tri-Moto Base
    Shipping Policy

    Shipping Policy Last Updated: April 2026

    We're committed to getting your order to you as quickly and transparently as possible. Here's everything you need to know about how we ship.

    Order Cancellations

    Once an order is placed, cancellations are not guaranteed as orders are sent to fulfillment quickly. If you need to cancel, contact us immediately at sales@berryperformancesales.com. If a cancellation is possible, the buyer is responsible for any transaction fees incurred. If the order has already shipped, it cannot be cancelled and must go through our standard return process.

    Processing Time

    In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise noted on the product page. Orders placed on weekends or holidays will be processed on the next business day.

    Shipping Costs

    Shipping costs are calculated at checkout based on the shipping method selected, package weight and dimensions, and destination address. You can review all shipping costs before finalizing your purchase.

    Estimated Delivery Times

    Domestic orders typically arrive within 1–7 business days after shipment, depending on your location and the carrier. Please note that delivery times are estimates and are not guaranteed. Delays due to weather, carrier volume, or other circumstances beyond our control may occur.

    Tracking Information

    Once your order ships, you will receive a confirmation email with tracking information. Use this to monitor your package's progress. If your tracking has not updated within 48 hours of receiving your confirmation email, please contact us and we'll look into it.

    Shipping Address

    Please ensure your shipping address is accurate and complete before placing your order. If you realize an error after ordering, contact us immediately at sales@berryperformancesales.com — we will do our best to make the correction, but changes cannot be guaranteed once an order is in fulfillment. We are not responsible for orders shipped to incorrect or undeliverable addresses due to customer error.

    Please note: We are unable to ship to P.O. Boxes. Please provide a physical delivery address at checkout.

    Lost or Stolen Packages

    If your tracking shows your order as delivered but you have not received it, please take the following steps:

    • Check around your property and with neighbors
    • Confirm the shipping address on your order was correct
    • Contact the carrier directly with your tracking number

    If the issue remains unresolved, contact us at sales@berryperformancesales.com within 5 business days of the marked delivery date. We will work with you and the carrier to investigate. Berry Performance Sales is not responsible for packages confirmed as delivered by the carrier or for packages stolen after delivery.

    Damaged in Transit

    If your order arrives visibly damaged, please refer to our Returns & Refunds policy for instructions on how to report the issue. Carrier damage claims must be reported within 48 hours of delivery.

    International Shipping

    We do ship internationally! Because shipping costs, carrier options, and transit times vary significantly by destination, international orders require a custom quote prior to purchase. To request a shipping quote, contact us at sales@berryperformancesales.com with the following:

    • Your country and full delivery address
    • The item(s) you are interested in ordering

    We will respond with a shipping quote as quickly as possible. Please note that customs duties, import taxes, and any other fees charged upon delivery are the sole responsibility of the recipient and are not included in your shipping quote. We recommend checking with your local customs office before placing your order.

    Off-Road Use Disclaimer

    All products are sold for off-road use only unless otherwise specified. The buyer assumes full responsibility for installation and operation. Berry Performance Sales is not liable for any incidental, indirect, or consequential damages including engine failure, labor charges, or vehicle downtime resulting from the use of any product sold. By placing an order, you acknowledge and accept these terms.

    Questions?

    We're happy to help before, during, or after your purchase. Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    Return Policy

    Return Policy

    Last Updated: June 2026

    We want you to love what you ordered. If something isn't right, here's everything you need to know.

    30-Day Return Window

    You have 30 days from the date your order is shipped to initiate a return. After this window, we are unable to accept returns.

    We do not offer exchanges. All approved returns are refunded according to the terms below.

    How to Initiate a Return

    To request a return, contact us at sales@berryperformancesales.com with your order number and reason for return.

    All returns must be approved by our team before any item is shipped back to us.

    Once your return has been approved, your item must be shipped within 10 calendar days of approval. Valid tracking information must be provided upon request.

    Items shipped without prior approval, without verifiable tracking information upon request, or outside this window may be refused and returned to sender at the customer's expense.

    Return Conditions

    To be eligible for a return, items must be:

    • Unused and in original condition
    • In original packaging
    • Complete with all original parts, hardware, manuals, accessories, and promotional items

    The following items are not eligible for return:

    • Custom-ordered products
    • Programmers and tuners, unless brand new and factory sealed. Any unit that has been connected to a vehicle, registered, or used to flash a tune is not returnable, regardless of packaging condition
    • Open Box listings
    • Installed, modified, painted, coated, welded, cut, or otherwise used products
    • Items marked as Clearance, Closeout, or Final Sale

    Products sold as kits, complete systems, or bundled packages must be returned in their entirety. Partial returns are not accepted.

    Items that include promotional products, discounts, or free gifts must be returned with all included items. If any promotional item is not returned, its retail value may be deducted from the refund.

    We strongly recommend test-fitting all parts before installation, painting, coating, or modification.

    Labor costs, installation fees, tuning expenses, diagnostic charges, rental vehicles, towing fees, downtime, or any other incidental or consequential costs are not reimbursable under any circumstances.

    If you're unsure whether your item qualifies for return, contact us before purchasing.

    Once we receive your return, we will inspect the item before processing any refund. We reserve the right to deny a return or reduce the refund amount if the item is received in a condition that differs from what was originally shipped, including signs of use, missing parts, altered packaging, or damage that occurred after delivery.

    If a return is denied, the item will be shipped back to the customer at the customer's expense. We will attempt to contact the customer to arrange this. Denied returns left unclaimed after 30 days may be disposed of at our discretion.

    Fitment Responsibility

    Vehicle compatibility information is provided as a guide only and may not account for all modifications, trim levels, production changes, or custom applications.

    It is the customer's responsibility to verify fitment before ordering.

    Berry Performance Sales is not responsible for fitment issues resulting from vehicle modifications, engine swaps, aftermarket components, or inaccurate information provided at checkout.

    If you have questions regarding compatibility, please contact us before placing your order.

    Race Use & Off-Road Products

    Some products sold by Berry Performance Sales are intended for race use, off-road use, or closed-course competition only and may not be legal for use on public roads.

    It is the customer's responsibility to verify local, state, and federal regulations before installing or using these products on a street-driven vehicle.

    Berry Performance Sales is not responsible for fines, citations, emissions violations, or other legal consequences resulting from the use of race-only or off-road-only parts.

    Return Packaging Requirements

    Do not write on, tape directly to, or affix shipping labels to the manufacturer's packaging.

    Returned items must be shipped in an outer box or protective packaging sufficient to prevent damage during transit.

    Items returned with damaged, altered, or missing packaging may be subject to additional deductions or denial of the return.

    Customers are responsible for ensuring return packages are properly packed and delivered to us. We strongly recommend using a trackable and insured shipping service.

    Fees to Know Upfront

    We believe in being transparent about costs:

    • Restocking Fee: 20% — deducted from all approved return refunds
    • Return Shipping: Buyer's responsibility on all standard returns
    • Cancellation (Installment/Payment Plan): 7% fee to cover transaction costs
    • Cancellation (Credit Card/PayPal): 3.5% processing fee
    • Cancellation (Backordered Parts): 3.5% fee, regardless of payment method, to cover processing costs already incurred

    Damaged, Defective, or Incorrect Items

    If your order arrives damaged, defective, or incorrect, you must contact us within 48 hours of delivery at sales@berryperformancesales.com.

    Claims reported outside this window may not be eligible for resolution.

    When contacting us, please include:

    • Your order number
    • A description of the issue
    • Clear photos or video of the damage or defect

    Do not install, modify, or use a damaged, defective, or incorrect item. Installation or use of such items constitutes acceptance of the product's condition and may void eligibility for return, replacement, or warranty consideration.

    Items confirmed to be defective due to a manufacturing defect or fulfillment error will have return shipping costs covered by Berry Performance Sales.

    Manufacturer warranties are separate from our return policy and may require inspection, troubleshooting, or approval directly through the manufacturer.

    Refunds

    Once we receive and inspect your return, refunds are processed within 3–5 business days back to your original payment method.

    Original shipping charges, expedited shipping fees, freight charges, customs fees, duties, taxes, brokerage fees, and other non-refundable service costs are not eligible for reimbursement unless the return is the result of a verified fulfillment error by Berry Performance Sales.

    Refunds are issued only to the original payment method used at checkout.

    You'll receive a confirmation email once your refund has been issued.

    Payment Disputes

    If you experience an issue with your order, we ask that you contact us directly before initiating a chargeback or payment dispute.

    Most concerns can be resolved quickly through our customer support team.

    Questions?

    We're happy to help before, during, or after your purchase.

    Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    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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