Denso
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Denso 3439 Spark Plug
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Denso 3439 Spark Plug
Durable iridium plugs that are almost impervious to wear, offering improved performance and fuel efficiency.
Denso 3439 Spark Plug
Item #: 10811523

Denso 3439 Spark Plug

89% of respondents would recommend this to a friend

Item #: 10811523

NAD 559

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Durable iridium plugs that are almost impervious to wear, offering improved performance and fuel efficiency.
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What Stands Out

Precision Engineering
The Denso 3439 Spark Plug is meticulously crafted for optimal performance, ensuring a perfect fit and precise ignition timing, which translates to improved engine efficiency and smoother operation.
Durable Construction
Featuring a robust design with high-quality materials, the Denso 3439 delivers exceptional longevity and resistance to wear, minimizing the need for frequent replacements and offering great value for money.
Enhanced Performance
This spark plug enhances fuel combustion, resulting in increased power output and reduced emissions, making it an excellent choice for environmentally conscious consumers seeking improved engine performance.

Product Details

Shop online for Denso 3439 Spark Plug at Ubuy Namibia. Find the best prices and deals on spark plugs. Get fast shipping and easy returns on Ubuy Namibia.
Brand NameDenso
Manufacturer Part Number3439
Global Trade Identification Number00042511034396
Number of Items1
Item HighlightReplaces AJ812146 C2P23089 XP5684 9029 22401-1HC1B 22401-EW61B 22401-JA01B 22401-JD01B. 80k-100k mileage rated.
UPC042511034396
Unit Count1 Count
OEM Equivalent Part Number1N19 18 110-MAZDA,22401-1HC1B-NISSAN,22401-2331R-NISSAN,22401-5R21B-NISSAN,22401-5R21B-RENAULT,22401-CK81B-NISSAN,22401-CP51B-NISSAN,22401-EA014-NISSAN,22401-EA015-SUBARU,22401-ED815-NISSAN,22401-JA01B-NISSAN,22401-JD01B-NISSAN,22401-JD07B-NISSAN,22401EW67B-NISSAN,7701065085-RENAULT
Included ComponentsSpark Plug
Item Weight1.28 ounces (36.29 grams)
Item Type NameSpark Plug
ManufacturerDenso
Model Number3439
Thread SizeRM
Compatible with Vehicle TypeCar, Truck
Automotive Fit TypeVehicle Specific Fit
Core MaterialIridium
Top Material TypeMetal
BrandDenso
Vehicle Service TypeCar, Truck

Who Should Buy?

Suitable For
  • Performance Enthusiasts

    Ideal for users seeking improved engine performance and efficiency with dependable spark plugs.

  • Cold Weather Drivers

    Engineered for reliable start-ups and operation in cold weather conditions, perfect for winter drivers.

  • Fuel Efficiency Seekers

    Great for those focused on maximizing fuel efficiency and minimizing emissions in their vehicles.

Not Suitable For
  • High-Performance Racing

    Not suitable for extreme racing applications where specialized spark plugs are required for peak performance.

Product Description

Denso 3439 Spark Plug

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Denso 3439 Spark Plug made of?

    Answer: The Denso 3439 Spark Plug features a superior construction with platinum tips that enhance its durability and performance. This material not only ensures excellent conductivity but also provides a longer lifespan compared to standard copper spark plugs. Ideal for high-performance vehicles, the platinum core aids in better ignition efficiency. Users often note improved fuel efficiency and smoother engine performance, making this spark plug a preferred choice for automotive enthusiasts and those maintaining their vehicles in top condition.
  • Question: What vehicles are compatible with Denso 3439 Spark Plug?

    Answer: The Denso 3439 Spark Plug is compatible with a wide range of vehicles, particularly those requiring a high-performance ignition system. This includes many models from manufacturers like Toyota, Honda, and Nissan among others. It’s important to check your vehicle's specifications to ensure compatibility. By using the right spark plug, drivers can expect enhanced engine performance, reduced emissions, and increased fuel economy, which is beneficial for both everyday driving and performance-driven applications.
  • Question: How do I know if I need to replace my Denso 3439 Spark Plug?

    Answer: Signs that indicate a need for replacing your Denso 3439 Spark Plug include engine misfires, difficulty starting, decreased fuel efficiency, or a rough idle. Regular maintenance checks should also involve inspecting spark plugs for wear and carbon build-up. If you notice your vehicle not performing at its best, troubleshooting spark plugs should be a priority. Changing them at appropriate intervals can help maintain engine efficiency and ensure reliable performance, especially in older vehicles or those subjected to harsh driving conditions.
  • Question: Can I use Denso 3439 Spark Plug in a turbocharged engine?

    Answer: Yes, the Denso 3439 Spark Plug is suitable for turbocharged engines, thanks to its robust construction and efficient thermal conductivity. Turbo engines generate higher levels of pressure and heat, making it crucial to have spark plugs that can withstand such conditions. Due to its platinum design, the Denso 3439 can perform reliably under these increased demands. Users often find that this spark plug helps in achieving optimal performance and engine responsiveness when used in turbocharged setups.
  • Question: What are the benefits of using Denso 3439 Spark Plug over standard plugs?

    Answer: The Denso 3439 Spark Plug offers numerous advantages over standard plugs, including improved ignition reliability and fuel efficiency. Its platinum tip provides a longer service life, reducing the frequency of replacements. In addition, the design promotes better performance in terms of acceleration and overall engine responsiveness. Drivers prefer this spark plug for high-mileage vehicles or performance-based applications as it ensures that the engine operates smoothly and efficiently, leading to a better driving experience.
  • Question: How should I install the Denso 3439 Spark Plug?

    Answer: To install the Denso 3439 Spark Plug, first ensure the engine is cool, then remove the old plugs using a spark plug socket and ratchet. Gap the new Denso plug according to your vehicle’s specifications, as proper gapping is crucial for optimal performance. Install the new spark plugs by hand to avoid cross-threading, and then tighten them to the recommended torque specifications. Finally, reconnect the ignition wires. Proper installation can lead to enhanced engine performance and prevent issues associated with misfiring or poor ignition.
  • Question: Are Denso 3439 Spark Plugs pre-gapped?

    Answer: Yes, Denso 3439 Spark Plugs are usually pre-gapped to meet general vehicle requirements, but it’s always best practice to double-check the gap setting according to your specific vehicle's manual. This ensures optimal performance and prevents engine misfire issues. Maintaining the correct gap is crucial as it affects ignition efficiency and engine performance. Regularly checking and adjusting the gap can lead to improved fuel economy and smoother operation of your vehicle.
  • Question: What are the signs of a failing spark plug?

    Answer: Signs of a failing spark plug, such as the Denso 3439, can include engine misfires, hard starts, poor acceleration, and decreased fuel efficiency. Other indicators include a rough idle or illuminated check engine light. Regular inspection is vital; if you observe any of these symptoms, it may indicate that your spark plug needs replacement. Addressing these signs promptly can restore your vehicle's performance and prevent more significant engine issues down the road.
  • Question: Can I use Denso 3439 Spark Plug in my motorcycle?

    Answer: The Denso 3439 Spark Plug is specifically designed for automotive use, but in some cases, it might be compatible with select motorcycles, especially those that use similar dimensions and specifications. Always consult your motorcycle’s manual to ensure compatibility before use. Choosing the right spark plug for your motorcycle can significantly enhance ignition efficiency and engine performance, contributing to a smoother ride and better overall handling.
  • Question: Where can I buy Denso 3439 Spark Plug?

    Answer: You can purchase the Denso 3439 Spark Plug conveniently through Ubuy. Ubuy provides a streamlined shopping experience, allowing you to find and order your spark plug with ease. Their platform offers a wide selection of automotive parts, ensuring you receive genuine products. With Ubuy, you can explore various automotive needs efficiently, making it your go-to destination for quality car maintenance supplies.

Denso Spark Plugs 3439 Editorial Review

The Denso 3439 Spark Plug has received mixed reviews from customers. While some customers have experienced problems with their car running poorly at higher speeds after using these plugs, others have noticed a difference in power and have recommended them. Installation of the plugs has been reported as easy, with some customers opting to do it themselves to avoid high labor costs at a local shop. Overall, these spark plugs are said to perform similarly to more expensive brands and provide an improvement in the car's performance.

Customer Reviews & Ratings

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Pros

  • Easy to install
  • Improved performance

Cons

  • Some customers experienced problems with car running poorly at higher speeds

Platform Trust & Buyer Confidence

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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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NAD 559

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