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    NGK Iridium Spark Plug Box of 4 (BKR6EIX-11)

    Vendor: NGK
    SKU: NGK3764
    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
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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
    1992-2001 Acura Integra GS-R
    1997-1998,2000 Acura Integra Type R
    1991-1993 Acura Legend Base
    1994-1995 Acura Legend GS
    1991-1995 Acura Legend L
    1991-1995 Acura Legend LS
    1995 Acura Legend SE
    1999 Acura NSX Alex Zanardi Edition
    1991-2001,2004-2005 Acura NSX Base
    1995-2003 Acura NSX T
    2005 Aston Martin DB9 Base
    2005 Aston Martin DB9 Volante
    2002-2005 Audi A4 Base
    2003-2005 Audi A4 Cabriolet
    2002-2005 Audi A4 Quattro Avant
    2002-2005,2009 Audi A4 Quattro Base
    2004-2006 Audi A4 Quattro Cabriolet
    2008-2010 Audi A5 Quattro Base
    2002-2004,2009-2011 Audi A6 Base
    2002-2004 Audi A6 Quattro Avant
    2002-2006 Audi A6 Quattro Base
    2009-2010 Audi Q5 Premium
    2009-2012 Audi Q5 Premium Plus
    2009-2012 Audi Q5 Prestige
    2004 Chevrolet Aveo Base
    2004-2008 Chevrolet Aveo LS
    2005-2008 Chevrolet Aveo LT
    2005-2006 Chevrolet Aveo Special Value
    2007-2008 Chevrolet Aveo5 LS
    2007-2008 Chevrolet Aveo5 Special Value
    1999-2000 Chevrolet Metro Base
    1998-2001 Chevrolet Metro LSi
    1999-2000 Chevrolet Tracker Base
    1999-2000 Chevrolet Tracker LSi
    2005-2006 Chrysler Crossfire SRT-6
    1995-1999,2001 Chrysler Sebring LX
    2001 Chrysler Sebring LXi
    1999-2002 Daewoo Lanos S
    1999-2000 Daewoo Lanos SE
    2001-2002 Daewoo Lanos Sport
    1999-2000 Daewoo Lanos SX
    1989 Daihatsu Charade CLS
    1989 Daihatsu Charade CLX
    1990-1992 Daihatsu Charade SE
    1990-1992 Daihatsu Charade SX
    1990-1992 Daihatsu Rocky SE
    1990-1992 Daihatsu Rocky SX
    1995-1999 Dodge Avenger Base
    1996-1999 Dodge Avenger ES
    2005-2007 Dodge Dakota Laramie
    2005-2007 Dodge Dakota SLT
    2005 Dodge Dakota Sport
    2005 Dodge Dakota ST
    1991-1993 Dodge Stealth ES
    1991-1996 Dodge Stealth R/T
    1991-1996 Dodge Stealth R/T Turbo
    2001 Dodge Stratus R/T
    2001 Dodge Stratus SE
    1996-1998 Eagle Talon Base
    1995-1998 Eagle Talon ESi
    1991-1996 Ford Escort GT
    1992-1993 Ford Escort LX-E
    1993-1997 Ford Probe Base
    1997 Ford Probe GTS
    1993-1996 Ford Probe SE
    1990-1991 Geo Storm 2+2 GSi
    1999-2000 Honda Civic Si
    1994-1997 Honda Civic del Sol VTEC
    2011-2015 Honda CR-Z Base
    2011-2016 Honda CR-Z EX
    2016 Honda CR-Z EX-L
    2016 Honda CR-Z LX
    1994-1995 Honda Passport EX
    1994-1995 Honda Passport LX
    1991-1996 INFINITI G20 Base
    1994-1996 INFINITI G20 T
    1990-1992 INFINITI M30 Base
    1989 Isuzu I-Mark RS
    1990-1992 Isuzu Impulse XS
    1993-1995 Isuzu Rodeo LS
    1993-1995 Isuzu Rodeo S
    1992 Isuzu Stylus S
    1991 Isuzu Stylus XS
    1995 Isuzu Trooper Limited
    1992-1995 Isuzu Trooper LS
    1993-1995 Isuzu Trooper RS
    1992-1995 Isuzu Trooper S
    1998-1999 Jaguar XJR Base
    2004 Jeep Grand Cherokee Laredo
    2002-2004 Jeep Grand Cherokee Limited
    2002-2004 Jeep Grand Cherokee Overland
    2003-2005 Kia Rio Base
    2003-2005 Kia Rio Cinco
    1995-2002 Kia Sportage Base
    1995-2001 Kia Sportage EX
    2001 Kia Sportage Limited
    2003-2004 Land Rover Discovery HSE
    2003-2004 Land Rover Discovery S
    2003-2004 Land Rover Discovery SE
    1999-2000 Land Rover Discovery Series II
    2001 Land Rover Discovery Series II LE
    2001-2002 Land Rover Discovery Series II SD
    2001-2002 Land Rover Discovery Series II SE
    2002-2004 Land Rover Freelander HSE
    2002-2003 Land Rover Freelander S
    2002-2005 Land Rover Freelander SE
    2003-2005 Land Rover Freelander SE3
    1994-1995,1999-2003 Lexus ES300 Base
    2004-2006 Lexus ES330 Base
    2001-2005 Lexus GS300 Base
    1998-2000 Lexus GS400 Base
    2001-2007 Lexus GS430 Base
    2003-2009 Lexus GX470 Base
    2010-2012 Lexus HS250h Base
    2010-2012 Lexus HS250h Premium
    2001-2005 Lexus IS300 Base
    2002-2005 Lexus IS300 Sportcross
    1990-2000 Lexus LS400 Base
    2001-2006 Lexus LS430 Base
    1998-2007 Lexus LX470 Base
    1999-2003 Lexus RX300 Base
    2004-2006 Lexus RX330 Base
    2006-2008 Lexus RX400h Base
    1993-1994 Lexus SC300 Base
    1992-2000 Lexus SC400 Base
    2002-2010 Lexus SC430 Base
    1991 Lotus Elan Base
    2005-2007 Lotus Elise Base
    2006 Lotus Exige Base
    1990-1993 Mazda Miata Base
    1993 Mazda Miata LE
    1991 Mazda Miata SE
    1990-1994 Mazda Protege LX
    2003-2004 Mercedes-Benz C32 AMG Base
    2005-2006 Mercedes-Benz C55 AMG Base
    2002 Mercedes-Benz CL600 Base
    2003-2006 Mercedes-Benz CLK55 AMG Base
    2002 Mercedes-Benz S600 Base
    2001-2004 Mercedes-Benz SLK230 Kompressor
    2003-2004 Mercedes-Benz SLK32 AMG Base
    2005-2010 Mercedes-Benz SLK55 AMG Base
    1991-1994 Mercury Capri Base
    1991-1994 Mercury Capri XR2
    1991-1996 Mercury Tracer LTS
    2007-2008 Mini Cooper Base
    2007-2008 Mini Cooper S
    1991-1998 Mitsubishi 3000GT Base
    1991-1999 Mitsubishi 3000GT SL
    1995-1996 Mitsubishi 3000GT Spyder SL
    1995-1996 Mitsubishi 3000GT Spyder VR-4
    1991-1999 Mitsubishi 3000GT VR-4
    1992-1995 Mitsubishi Diamante LS
    1999 Mitsubishi Eclipse GS
    2000 Mitsubishi Eclipse GT
    1999 Mitsubishi Eclipse RS
    1999-2000 Mitsubishi Galant ES
    1999-2000 Mitsubishi Galant GTZ
    1999-2000 Mitsubishi Galant LS
    2011-2013 Mitsubishi Lancer DE
    2011-2017 Mitsubishi Lancer ES
    2011-2014 Mitsubishi Lancer ES Sportback
    1995-1996 Mitsubishi Montero LS
    1997-1998 Mitsubishi Montero Sport LS
    1997-1998 Mitsubishi Montero Sport XLS
    2011-2020 Mitsubishi Outlander Sport ES
    2017 Mitsubishi Outlander Sport GT
    2013,2018-2019 Mitsubishi Outlander Sport LE
    2011-2015,2019-2020 Mitsubishi Outlander Sport SE
    2019-2020 Mitsubishi Outlander Sport SP
    1995-1998 Nissan 200SX Base
    1995-1998 Nissan 200SX SE
    1995-1998 Nissan 200SX SE-R
    2001-2004 Nissan Frontier SC
    2002-2004 Nissan Frontier SVE
    1989-1994 Nissan Maxima GXE
    1989-1991 Nissan Maxima SE
    1991-1993 Nissan NX SE
    1991-1993 Nissan NX XE
    1998-1999 Nissan Sentra SE
    1991-1994 Nissan Sentra SE-R
    2002-2004 Nissan Xterra SE
    2002 Nissan Xterra XE
    1993-1994 Plymouth Colt Vista
    1993-1994 Plymouth Colt Vista SE
    2009-2010 Pontiac Vibe AWD
    2009-2010 Pontiac Vibe Base
    2003-2006,2009-2010 Pontiac Vibe GT
    2006-2010 Saab 9-3 2.0T
    2004-2005,2010-2011 Saab 9-3 Aero
    2004-2005 Saab 9-3 Arc
    2004-2005 Saab 9-3 Linear
    2011 Saab 9-3 Turbo4
    2010-2011 Saab 9-3X Base
    2005-2010 Scion tC Base
    2007-2008 Scion tC Spec
    2008-2012 Scion xB Base
    2003 Subaru Baja Base
    2003 Subaru Baja Sport
    1999-2002 Subaru Forester Base
    1999-2002 Subaru Forester L
    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

    Returns & Refunds Last Updated: April 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 of purchase to initiate a return. After this window, we are unable to accept returns. We do not offer exchanges — all approved returns are refunded per 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 days of approval. Items shipped without prior approval or outside this window will be refused and returned to sender.

    Return Conditions

    To be eligible for a return, items must be:

    • Unused and in original condition
    • In original packaging
    • Inclusive of all parts and accessories

    Custom ordered products are non-returnable. If you're unsure whether your item qualifies, contact us before purchasing.

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

    Fees to Know Upfront

    We believe in being transparent about costs:

    • Restocking Fee: 20% — deducted from all 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

    Damaged or Defective Items

    If your order arrives damaged or defective, 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

    If your item was damaged during shipping, this is handled as a carrier claim separate from our standard return process — we will assist you in filing that claim. Items confirmed to be defective due to a manufacturing or fulfillment error will have return shipping costs covered by Berry Performance Sales.

    Refunds

    Once we receive and inspect your return, refunds are processed within 3–5 business days back to your original payment method. You'll receive a confirmation once it's been issued.

    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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