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          NGK 6043 - Spark Plug

          MPN: 6043
          The NGK 6043 Spark Plug is designed for select Mercedes-Benz models, ensuring efficient ignition and engine performance. Built to OEM standards for lasting reliability.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $11.59
          In stock

          Product Overview

          Experience the ultimate in engine performance with the NGK Spark Plug 6043. Designed specifically for select Mercedes-Benz models, this Laser Iridium spark plug features a pre-gapped setting of 0.040 inches, ensuring optimal ignition and efficiency. Trust in NGK's premium-grade construction, which is engineered to meet or exceed OEM standards, providing you with reliability and longevity. Ideal for DIY enthusiasts and professional technicians alike, this spark plug is a key component in maintaining your vehicle's performance. Choose NGK 6043 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This NGK 6043 is equivalent to or replaces the following part numbers: ILZKAR7A10, 6043.

          Vehicle Compatibility

          • Mercedes-Benz C63 AMG 6.3 V8 (2010–2015)
          • Mercedes-Benz SL63 AMG 6.3 V8 (2009–2012)
          • Mercedes-Benz E63 AMG 6.3 V8 (2009–2011)
          • Mercedes-Benz S63 AMG 6.3 V8 (2008–2010)
          • Mercedes-Benz CLS63 AMG 6.3 V8 (2008–2011)
          • Mercedes-Benz ML63 AMG 6.3 V8 (2009–2011)
          • Mercedes-Benz CL63 AMG 6.3 V8 (2008–2010)
          • Mercedes-Benz CLK63 AMG 6.3 V8 (2007–2008)
          • Mercedes-Benz R63 AMG 6.3 V8 (2007)
          • Mercedes-Benz C63 AMG Black Series 6.3 V8 (2012)

          This may also fit other applications. Please use the vehicle selector tool to verify fitment.

          Why Shop at eEuroparts.com?

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • Exclusive Kits That Fitâ„¢ - complete repair solutions with no guesswork
          • Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
          • Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
          • Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
          • Established Trust: Serving the European auto community since 2000.

          Frequently Asked Questions

          What does the NGK 6043 Spark Plug do?

          The NGK Spark Plug 6043 is responsible for igniting the air-fuel mixture in your engine's combustion chamber, which is essential for the engine's performance and efficiency. Properly functioning spark plugs help ensure smooth engine operation and optimal fuel economy.

          How do I know if my Spark Plug needs replacement?

          Common signs that your spark plugs may need replacement include engine misfires, reduced fuel efficiency, difficulty starting the engine, and poor acceleration. If you notice any of these symptoms, it's advisable to check your spark plugs.

          Can I install the NGK 6043 myself?

          Yes, the NGK 6043 can be installed by DIY enthusiasts. However, it is important to follow the manufacturer's instructions and take necessary precautions to ensure proper installation and avoid damaging the spark plug or engine.

          What are the symptoms of a faulty Spark Plug?

          Symptoms of a faulty spark plug may include rough idling, engine misfires, decreased acceleration, and overall poor engine performance. If you experience these issues, it is advised to check the NGK Spark Plug 6043 for potential failure.

          Why should I choose NGK for my Spark Plug needs?

          NGK is a trusted brand known for its high-quality automotive components. Order NGK 6043 today for a factory-correct replacement that restores safety and performance.

          Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.

            • eEuroparts SKU
              139322
            • Weight
              0.09 lbs
            • Manufacturer Part #
              6043
          • Brand
            NGK
          • Manufacturer
            NGK
          • MPN
            6043
          • Part Type
            Spark Plug
          • OE Part Numbers
            A 004 159 39 03, A0041593903
          • Cross Reference Numbers
            6043, 4712, IXEH22TT, XP5682
          • Features
            Center Electrode Core Material : Copper
            Center Electrode Tip Material : Iridium
            Electrical Terminal Type : Non-Removable Nut
            Ground Configuration : Standard
            Ground Electrode Core Material : Nickel
            Ground Electrode Quantity : 1
            Ground Electrode Tip Design : Standard
            Hex Size : 14
            Insulator Height : 50.00
            Manufacturer Heat Range : 7
            Part Number : ILZKAR7A10
            Pre-Gap Size : .040
            Reach : 26.5
            Resistance : 1000.0
            Seat Type : Flat
            Stock Number : 6043
            Thread Diameter : 12.00
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2010Mercedes-BenzCLS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2010Mercedes-BenzE63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2010Mercedes-BenzS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2010Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2010Mercedes-BenzCL63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2010Mercedes-BenzML63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2011Mercedes-BenzSL63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2011Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2011Mercedes-BenzML63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2011Mercedes-BenzE63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2011Mercedes-BenzCLS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2015Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 50,000 mi OE Mfr Recommended Service Interval
          2012Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2012Mercedes-BenzC63 AMGBlack Series (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2012Mercedes-BenzSL63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2007Mercedes-BenzCLK63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2007Mercedes-BenzCLS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2007Mercedes-BenzE63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2007Mercedes-BenzML63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2007Mercedes-BenzR63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2013Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzCL63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzCLK63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzCLK63 AMGBlack Series (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzCLS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzE63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzML63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2008Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzSL63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzCL63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzCLS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzE63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzS63 AMGBase (6.3 V8 GAS)Notes: Gap 0.040", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzML63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2009Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 80,000 mi OE Mfr Recommended Service Interval
          2014Mercedes-BenzC63 AMGBase (6.3 V8 GAS)Notes: Gap 0.039", Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval
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          Warranty Overview

          At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.

          Standard Warranty – Most Parts

          • Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.

          • Protection: Defects in materials or workmanship under normal personal use.

          • Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.

          • Exclusions:

            • Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)

            • Commercial, fleet, rideshare, off-road, or racing use

            • Improper installation, misuse, accidents, or modifications

          • Not Covered: Labor, shipping, towing, or incidental costs.

          Bison Performance Warranty – Our House Brand

          • Coverage: Limited Lifetime Warranty for as long as you own your vehicle.

          • Applies To: All products sold under the Bison Performance label.

          • Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.

          • Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).

          • What’s Included: Replacement of the defective product (labor and shipping excluded).

          Warranty Claim Requirements

          To keep claims fast and fair, we require:

          • Proof of purchase (invoice or order confirmation).

          • Photos or videos showing the defective part, order number, date, VIN, and odometer reading.

          • Diagnostic reports or part returns for non-visible issues may be requested.

          • Claims must be truthful, properly documented, and reflect normal consumer use.

          Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.

          For full details and exclusions, please see our complete Warranty Terms & Conditions.

          This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.

          Return Policy Overview

          Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
          To start a return, contact customer support via Chat or Contact Us.

          • Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)

          • Refunds: Issued to your original payment method within 3–5 business days after inspection

          • Exchanges: Not automatic — please return and reorder

          • Replacements: May be approved for incorrect or defective items reported within 7 days

          Not returnable:

          • Used or installed parts

          • Electrical components

          • Opened filter kits, gaskets, or contaminated items

          • Final sale or custom orders

          Important Notes:

          • Return shipping is your responsibility unless we made a verified error

          • Fitment is the customer’s responsibility (we can assist, but do not guarantee)

          • Country of origin may vary and is not grounds for return

          For complete details, please see our full Return Policy.


          This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.

          Fast, Reliable Shipping — Straight to Your Door

          We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.

          • We use trusted carriers like UPS, FedEx, and USPS.

          • Tracking info is emailed to you as soon as your order ships.

          • Delivery estimates at checkout are based on carrier data, but not guaranteed.

          Need help with a shipment?

          If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.

          For complete details, please see our full Shipping Policy.


          This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.

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