• Your cart is empty
      0
      items

      Subtotal:$0.00

    :

    Clear
    Clear

          Denso 3445 - Spark Plug

          MPN: 3445
          The Denso 3445 Spark Plug ensures efficient ignition for your engine, enhancing performance and fuel efficiency. Designed for select Volkswagen and Mercedes-Benz models.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $5.85
          In stock

          Product Overview

          The Denso 3445 Spark Plug is engineered to meet OEM standards, ensuring optimal performance for your European vehicle. This essential component plays a critical role in your engine's operation, igniting the air-fuel mixture to drive the pistons and convert energy into horsepower. If your spark plugs are worn or damaged, you may experience power loss, hesitation, misfires, and poor startup performance. Denso spark plugs are designed for durability and longevity, with iridium options lasting up to 60,000 miles and platinum options rated for up to 100,000 miles. Choose Denso 3445 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Denso 3445 is equivalent to or replaces the following part numbers: XU22HDR9, 1321590003, 1321590103, 1321590203.

          Vehicle Compatibility

          • Volkswagen Touareg 3.6 V6 (2015–2016)
          • Volkswagen CC 3.6 V6 (2015–2016)
          • Volkswagen Passat 3.6 V6 (2015)
          • Mercedes-Benz C250 1.8 L4 (2015)
          • Mercedes-Benz SLK250 1.8 L4 (2015)
          • Mercedes-Benz G550 5.5 V8 (2015)

          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 Denso 3445 Spark Plug do?

          The spark plug ignites the air-fuel mixture in the engine's combustion chamber, facilitating the engine's power generation process. A properly functioning spark plug is essential for efficient engine performance.

          How do I know if my Spark Plug needs replacement?

          Common symptoms of a failing spark plug include reduced engine performance, difficulty starting the engine, misfiring, poor fuel efficiency, and an illuminated check engine light.

          Can I install the Denso 3445 myself?

          Yes, you can install the Denso 3445 Spark Plug yourself. Ensure you use dielectric grease during installation for a sealed connection, and consult your vehicle's manual for specific instructions.

          What are the symptoms of a faulty Spark Plug?

          Symptoms of a faulty spark plug include poor acceleration, engine misfires, rough idling, and increased emissions. If you are experiencing issues related to spark plugs, consult professional repair documentation for common trouble codes.

          Why should I choose Denso for my Spark Plug needs?

          Denso is a trusted brand known for high-quality automotive components. Order Denso 3445 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
              196190
            • Weight
              0.09 lbs
            • Dimensions (L x W x H)
              3.35 x 0.96 x 0.96 in
            • Barcode
              00042511034457
            • Manufacturer Part #
              3445
          • Brand
            Denso
          • Manufacturer
            Denso
          • MPN
            3445
          • Part Type
            Spark Plug
          • OE Part Numbers
            132 159 01 03, 1321590103, 132 159 00 03, 1321590003, 132 159 02 03, 1321590203
          • Cross Reference Numbers
            XU22HDR9
          • Features
            Center Electrode Core Material : Copper
            Center Electrode Tip Material : Nickel
            Ground Configuration : Standard
            Ground Electrode Core Material : Nickel
            Ground Electrode Quantity : 1
            Ground Electrode Tip Design : Standard
            Hex Size : 16.0
            Manufacturer Heat Range : 22
            Pre-Gap Size : 0.9
            Reach : 26.50
            Resistance : 5000.0
            Seat Type : Flat
            Thread Diameter : 12.00
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2015Mercedes-BenzC250Base (1.8 L4 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015Mercedes-BenzSLK250Base (1.8 L4 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015Mercedes-BenzG550Base (5.5 V8 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015VolkswagenCCExecutive 4 Motion (3.6 V6 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015VolkswagenTouaregV6 Executive (3.6 V6 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015VolkswagenTouaregV6 Lux (3.6 V6 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015VolkswagenTouaregV6 R-Line (3.6 V6 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2015VolkswagenTouaregV6 Sport (3.6 V6 GAS)Notes: Gap 0.035, DENSO is O.E. Manufacturer / Resistor Plug
          2016VolkswagenTouaregV6 Executive (3.6 V6 GAS)Notes: Gap 0.035, Resistor Plug
          2016VolkswagenTouaregV6 Lux (3.6 V6 GAS)Notes: Gap 0.035, Resistor Plug
          2016VolkswagenTouaregV6 Sport (3.6 V6 GAS)Notes: Gap 0.035, Resistor Plug
          2016VolkswagenCCV6 Executive 4Motion (3.6 V6 GAS)Notes: Gap 0.035, Resistor Plug
          2016VolkswagenPassatSEL Premium (3.6 V6 GAS)Notes: Gap 0.035, Resistor Plug
          Customer reviews
          Please sign in to add review
          There are no comments yet. Be the first to leave a comment

          We accept the following payment methods:

          Accepted payment methods

          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.

          Product questions

          No questions yet. Be the first to ask the question!