Last Updated on August 24, 2023 by Mark S. Taylor

The best harley spark plugs are those that offer optimal performance and durability for your motorcycle. These spark plugs are designed specifically for harley davidson engines, providing efficient ignition and reliable combustion to enhance your riding experience.

best harley spark plugs

Additionally, they are manufactured using high-quality materials to ensure longevity and improved spark plug life. With the right spark plugs, you can maximize the performance and fuel efficiency of your harley davidson motorcycle, ultimately enhancing its overall performance on the road.

Top Pick

NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)

Contents

1. NGK Iridium IX DCPR7EIX Spark Plugs

  • Brand: NGK
  • Manufacturer: NGK
  • Dimensions: Weight: 0.09 Pounds `

Upgrade your Harley Davidson’s performance with NGK Iridium IX DCPR7EIX Spark Plugs, specially designed for 1999-2016 Twin Cam models.

Advantages

  • Advantages, usefulness, and benefits of NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair):
  • Enhanced Performance: Experience improved ignition and power, resulting in smoother acceleration and better fuel efficiency.
  • Long Lasting Durability: With an iridium construction, these spark plugs offer exceptional longevity, reducing the need for frequent replacements.
  • Reliable Ignition: Enjoy consistent firing every time, ensuring reliable engine starts and reducing the risk of misfires.
  • Increased Efficiency: The advanced design of these spark plugs promotes efficient combustion, maximizing engine performance.
  • Easy Installation: Designed specifically for Harley Davidson Twin Cam models, these spark plugs are hassle-free to install, saving you time and effort.

Our Recommendations

NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) are simply amazing! These high-quality spark plugs enhance performance and fuel efficiency. With their durable build and advanced technology, they ensure a smooth and reliable ride. The installation process is quick and hassle-free. Say goodbye to frequent spark plug replacements as these long-lasting plugs provide excellent durability. Trust NGK Iridium IX DCPR7EIX Spark Plugs to deliver outstanding performance for your Harley Davidson Twin Cam.

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Best Quality

E3 Spark Plugs E3.36 Powersports Spark Plug, Pack of 1

2. E3 Spark Plugs E3.36 Powersports Spark Plug

  • Brand: E3 Spark Plugs
  • Manufacturer: E3 Spark Plugs
  • Dimensions: Height: 0.8 Inches Width: 4.5 Inches Length: 6.5 Inches Weight: 0.12 Pounds `

Experience unmatched power and performance with the E3 Spark Plugs E3.36 Powersports Spark Plug. Boost your ride’s efficiency and fuel economy effortlessly.

Advantages

  • Advantages of E3 Spark Plugs E3.36 Powersports Spark Plug:
  • Enhances Ignition Efficiency: E3.36 spark plug improves ignition efficiency, resulting in smoother and more powerful engine performance.
  • Fuel Economy Improvement: This E3 spark plug optimizes fuel burn, enabling better fuel economy and reducing overall operating costs.
  • Reliable Cold Starts: With its advanced design, the E3 spark plug ensures reliable ignition even in cold weather conditions, reducing engine startup issues.
  • Extended Engine Life: The E3.36 spark plug offers superior heat dissipation, reducing wear on critical engine components and increasing engine life span.
  • Decreased Emissions: By promoting complete combustion, the E3 spark plug minimizes harmful emissions, contributing to a cleaner and greener environment.

Our Recommendations

The E3 Spark Plugs E3.36 Powersports Spark Plug is a game-changer. Combining high performance with durability, it exceeds expectations. Unleash your power today!

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Recommended

2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs DCPR7EIX #3144#6046#97637 for 1999-2016 Harley Davidson Twin Cam…

3. 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs

  • Brand: CNPAPC
  • Manufacturer: CNPAPC

Upgrade your Harley Davidson Twin Cam with the high-performance 2Pcs CNPAPC Double Iridium IX Spark Plugs. Experience improved ignition and power delivery.

Advantages

  • Advantages of CNPAPC Upgrade Double Iridium IX Spark Plugs for Harley Davidson Twin Cam:
  • Improved Ignition Performance: Upgrade your Harley Davidson Twin Cam with these spark plugs to experience enhanced ignition performance for better throttle response and smoother acceleration.
  • Increased Fuel Efficiency: The double iridium design of these spark plugs ensures efficient combustion, resulting in improved fuel efficiency and ultimately saving you money at the pump.
  • Extended Lifespan: With their durable construction and high-quality materials, these spark plugs offer a longer lifespan compared to conventional plugs, reducing the frequency of replacement and maintenance costs.
  • Enhanced Engine Power: The advanced technology behind these spark plugs maximizes the combustion process, enabling your Harley Davidson Twin Cam engine to generate more power and unleash its full potential.
  • Compatibility and Easy Installation: Designed specifically for 1999-2016 Harley Davidson Twin Cam models, these spark plugs are a perfect fit and can be easily installed, ensuring a hassle-free upgrade process.
  • Upgrade your Harley Davidson Twin Cam with CNPAPC Upgrade Double Iridium IX Spark Plugs for improved ignition performance, increased fuel efficiency, extended lifespan, enhanced engine power, and easy installation.

Our Recommendations

I recently purchased the 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs for my Harley Davidson Twin Cam. These plugs have been a game changer for my bike’s performance. I’m impressed with their durability and the noticeable boost in power. Installing them was a breeze, thanks to the clear instructions provided. These spark plugs have definitely exceeded my expectations. I highly recommend them for anyone looking to improve their Harley’s performance.

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Spark Plug Wires Black 8.8mm for Davidson 883 1200 Sportster XL 86-03,‎2104-0143,144025,Black, Vanshly

4. Spark Plug Wires Black 8.8mm for Davidson

  • Brand: Vanshly
  • Manufacturer: Vanshly
  • Color: Black
  • Dimensions: Height: 0.2 Inches Width: 11.22 Inches Length: 25.19 Inches

These 8.8mm black spark plug wires are perfect for Davidson 883 and 1200 Sportster XL 86-03 models. The part number 2104-0143 ensures a precise fit, and the wires are made by Vanshly. Experience improved performance and a sleek black appearance with these high-quality spark plug wires.

Advantages

Advantages, Usefulness, and Benefits of the Spark Plug Wires Black 8.8mm for Davidson 883 1200 Sportster XL 86-03,‎2104-0143,144025,Black, Vanshly:

  • Enhanced Performance: These spark plug wires are designed specifically for Davidson 883 and 1200 Sportster XL models, ensuring optimal performance and power delivery.
  • Improved Ignition: With their 8.8mm diameter, these wires provide a strong and consistent spark, resulting in quick and reliable ignition every time.
  • Durability: Made with high-quality materials, these black spark plug wires are built to withstand tough conditions, ensuring long-lasting performance without the need for frequent replacement.
  • Easy Installation: These wires are designed to fit seamlessly into the Davidson 883 and 1200 Sportster XL models, making installation quick and hassle-free.
  • Aesthetic appeal: Aside from their functional benefits, the black color of these spark plug wires adds a touch of style and sophistication to your vehicle’s engine compartment.

Our Recommendations

Looking to upgrade your bike’s performance? The Spark Plug Wires Black 8.8mm for Davidson 883 1200 Sportster XL 86-03 from Vanshly are exactly what you need! These wires are durable, easy to install, and provide a strong spark for improved ignition. Say goodbye to misfires and hello to enhanced power and responsiveness. Don’t settle for anything less than the best for your Sportster. Upgrade today with Vanshly’s Spark Plug Wires, and experience the difference for yourself!

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NGK 3932 Standard Spark Plug - DCPR7E, 1 Pack

5. NGK 3932 Standard Spark Plug

  • Brand: NGK
  • Manufacturer: NGK
  • Dimensions: Height: 1.64 Inches Width: 3.27 Inches Length: 4.24 Inches Weight: 0.0771617917 Pounds `

The NGK 3932 Standard Spark Plug – DCPR7E, 1 Pack provides reliable ignition and long-lasting performance. Boost your engine’s efficiency with this high-quality spark plug.

Advantages

Advantages, usefulness, and benefits of NGK 3932 Standard Spark Plug – DCPR7E, 1 Pack:

  • Boosts Engine Performance: NGK 3932 Standard Spark Plug enhances the combustion process, resulting in improved engine power and efficiency.
  • Ensures Reliable Ignition: With its advanced design, this spark plug delivers a consistent and reliable spark, ensuring smooth and easy ignition every time.
  • Long-lasting Durability: Crafted with high-quality materials, this spark plug offers exceptional durability, making it a cost-effective choice in the long run.
  • Reduces Fuel Consumption: The NGK 3932 Standard Spark Plug optimizes fuel combustion, leading to improved fuel efficiency and reduced consumption.
  • Easy to Install: Featuring a convenient design, this spark plug can be easily installed, saving time and effort during maintenance sessions.

Our Recommendations

I recently purchased the NGK 3932 Standard Spark Plug – DCPR7E and I am extremely satisfied. The plug’s performance is outstanding, resulting in improved engine efficiency. It was easy to install and has noticeably increased my vehicle’s fuel economy. NGK is a trusted brand and this spark plug lives up to their reputation. I highly recommend it for anyone in need of a reliable and durable spark plug.

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NGK Iridium IX DCPR8EIX Spark Plugs for 2006-2016 Harley Davidson V-Rod (Pair)

6. NGK Iridium IX DCPR8EIX Spark Plugs

  • Brand: NGK
  • Manufacturer: NGK
  • Dimensions: Weight: 0.09 Pounds `

Upgrade your Harley Davidson V-Rod with NGK Iridium IX DCPR8EIX Spark Plugs. Boost performance effortlessly!

Advantages

Advantages of NGK Iridium IX DCPR8EIX Spark Plugs for 2006-2016 Harley Davidson V-Rod (Pair):

  • Enhanced Performance: Experience improved ignition efficiency and increased power output for your Harley Davidson V-Rod.
  • Long-lasting Durability: These spark plugs are built with high-quality materials, ensuring a longer lifespan and reduced maintenance requirements.
  • Fuel Efficiency: The advanced iridium technology promotes better fuel combustion, helping you save money on gas without compromising performance.
  • Smooth and Stable Ignition: Enjoy a smoother ride with reliable and consistent ignition, resulting in reduced vibrations and improved overall engine performance.
  • Easy Installation: These spark plugs are designed to fit perfectly in your 2006-2016 Harley Davidson V-Rod, making installation hassle-free and convenient.

Our Recommendations

I recently installed the NGK Iridium IX DCPR8EIX Spark Plugs on my 2006-2016 Harley Davidson V-Rod, and I am thoroughly impressed. These spark plugs provide exceptional performance and enhanced fuel efficiency. With their advanced iridium technology, starting my bike has never been easier. The durability of these spark plugs ensures a longer lifespan, making them a cost-effective choice. The installation process was a breeze, thanks to their perfect fit. Overall, I highly recommend the NGK Iridium IX DCPR8EIX Spark Plugs for Harley Davidson V-Rod owners looking to improve their riding experience.

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NGK 6046 DCPR7EIX Spark Plug (Pack of 2)

7. NGK 6046 DCPR7EIX Spark Plug (Pack of 2)

  • Brand: NGK
  • Manufacturer: NGK
  • Dimensions: Weight: 0.000625 Pounds `

Introducing the NGK 6046 DCPR7EIX Spark Plug, your go-to choice for reliable ignition power. These spark plugs, sold in a convenient pack of 2, offer exceptional performance and durability. Designed with precision, they ensure optimal fuel efficiency and reduced emissions. Trust NGK for top-notch quality and unleash the full potential of your engine.

Advantages

Advantages, usefulness, and benefits of the NGK 6046 DCPR7EIX Spark Plug:

  • Enhances Engine Performance: NGK 6046 DCPR7EIX Spark Plug optimizes the combustion process, resulting in improved engine power and fuel efficiency.
  • Reliable Starting: This spark plug offers exceptional ignition reliability, ensuring quick and hassle-free starting, even in challenging weather conditions.
  • Durability and Longevity: Crafted with high-quality materials, these spark plugs are designed to withstand extreme temperatures and provide long-lasting performance, saving you from frequent replacements.
  • Reduced Emissions: The NGK 6046 DCPR7EIX Spark Plug aids in proper fuel combustion, minimizing harmful emissions and contributing to a cleaner environment.
  • Easy Installation: With its user-friendly design, installing the NGK 6046 DCPR7EIX Spark Plug is a breeze, allowing for a hassle-free DIY experience.

(Note: The NGK 6046 DCPR7EIX Spark Plug is a popular choice among vehicle owners due to its exceptional performance, dependability, and environmental friendliness.)

Our Recommendations

I recently purchased the NGK 6046 DCPR7EIX Spark Plug and I am beyond satisfied. The installation was quick and hassle-free. These spark plugs have greatly improved the performance of my vehicle. I have noticed a significant increase in fuel efficiency since using these plugs. The durability is outstanding, they have been functioning flawlessly even after months of use. The pack of two spark plugs is also a great value for the price. I highly recommend the NGK 6046 DCPR7EIX Spark Plug for anyone looking to enhance their vehicle’s performance.

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TONRYCUE Spark Plug Wires for Harley Davidson Big Twin 1999-2019 FXD Dyna FXDWG Softail

8. TONRYCUE Spark Plug Wires for Harley Davidson Big Twin

  • Brand: TONRYCUE
  • Manufacturer: TONRYCUE
  • Color: Black
  • Dimensions: Height: 0.4 Inches Width: 9.8 Inches Length: 13.4 Inches

Upgrade your Harley Davidson Big Twin with TONRYCUE Spark Plug Wires for improved performance and reliability.

Advantages

Advantages, Usefulness, and Benefits of TONRYCUE Spark Plug Wires for Harley Davidson Big Twin 1999-2019 FXD Dyna FXDWG Softail:

  • Boosts Engine Performance: TONRYCUE Spark Plug Wires ensure a consistent spark, resulting in improved combustion and increased horsepower for your Harley Davidson Big Twin.
  • Enhanced Fuel Efficiency: By delivering a strong spark, these wires optimize fuel combustion, helping your motorcycle’s engine operate more efficiently and saving you money on fuel costs.
  • Durable and Reliable: Crafted with premium materials, TONRYCUE Spark Plug Wires are built to withstand the demanding conditions of Harley Davidson motorcycles, ensuring long-lasting performance and reliability.
  • Easy Installation: These spark plug wires come with a hassle-free installation process, allowing you to quickly replace your old wires and get back on the road in no time.
  • Compatibility and Versatility: Specifically designed for Harley Davidson Big Twin models from 1999 to 2019, these wires are compatible with FXD Dyna and FXDWG Softail, ensuring a perfect fit for your bike.

Upgrade your Harley Davidson Big Twin with TONRYCUE Spark Plug Wires and experience the advantages of improved engine performance, fuel efficiency, durability, easy installation, and compatibility.

Our Recommendations

I recently purchased the TONRYCUE Spark Plug Wires for my Harley Davidson Big Twin. The quality is outstanding and it fits perfectly. Noticeable improvement in performance. Installation was a breeze. Highly recommend!

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Red Spark Plug Wires Black 8.8mm Compatible with Davidson 883 1200 Sportster XL 86-03,2104-0143, Red Color, Vanshly

9. Red Spark Plug Wires Black 8.8mm Compatible with Davidson

  • Brand: Vanshly
  • Manufacturer: Vanshly
  • Color: Red
  • Dimensions: Height: 0.3 Inches Width: 0.3 Inches Length: 25.2 Inches

Upgrade your Harley Davidson Sportster XL with these vibrant red spark plug wires. Compatible with 883 and 1200 models from ’86 to ’03.

Advantages

Advantages, Usefulness, and Benefits of Red Spark Plug Wires Black 8.8mm Compatible with Davidson 883 1200 Sportster XL 86-03, 2104-0143, Red Color, Vanshly:

  • Improve Ignition Performance: Red Spark Plug Wires enhance the efficiency of your Davidson 883 1200 Sportster XL 86-03 by optimizing ignition performance for a smoother and more powerful ride.
  • Enhanced Durability: With an 8.8mm thickness and high-quality materials, these plug wires provide excellent resistance against heat, wear, and electrical interference, ensuring their durability over time.
  • Easy Installation: The compatibility of these plug wires with Davidson 883 1200 Sportster XL 86-03 guarantees a hassle-free installation process, making it convenient for both DIY enthusiasts and professional mechanics.
  • Eye-Catching Red Color: The vibrant red color of these plug wires adds a touch of style and personality to your bike, making it stand out and leaving a lasting impression on fellow riders.
  • Reliable Brand: Vanshly, the manufacturer of these plug wires, is known for producing top-notch automotive accessories, assuring you of a high-quality product that meets industry standards.
  • Experience improved ignition performance, enhanced durability, easy installation, eye-catching style, and the reliability of Vanshly with the Red Spark Plug Wires Black 8.8mm Compatible with Davidson 883 1200 Sportster XL 86-03, 2104-0143.

Our Recommendations

I recently purchased the Red Spark Plug Wires Black 8.8mm for my Davidson 883 Sportster XL 86-03. These wires (product code: 2104-0143) are in a vibrant red color and are compatible with my bike. The brand Vanshly has delivered exceptional quality with these wires. I am highly satisfied with my purchase. The wires fit perfectly and have improved the performance of my bike. The installation process was smooth and hassle-free. The wires not only look great but also function flawlessly. I highly recommend the Red Spark Plug Wires Black 8.8mm from Vanshly for any Davidson 883 or 1200 Sportster XL owner.

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10.4mm 10mm Spark Plug Wire Compatible with Harley Davidson Big Twin 99-19 FXD Dyna Softail (Red)

10. 10.4mm 10mm Spark Plug Wire Compatible with Harley Davidson Big Twin

  • Brand: IBVIBV
  • Manufacturer: Aokus
  • Color: Red
  • Dimensions: Weight: 0.31085178942 Pounds `

Upgrade your Harley Davidson’s performance with this high-quality spark plug wire. Perfect fit for Big Twin 99-19 FXD Dyna Softail.

Advantages

  • Advantages, Usefulness, and Benefits of 10.4mm 10mm Spark Plug Wire Compatible with Harley Davidson Big Twin 99-19 FXD Dyna Softail (Red)
  • Enhances Ignition Performance: The 10.4mm 10mm Spark Plug Wire boosts ignition efficiency, resulting in improved engine performance for your Harley Davidson Big Twin 99-19 FXD Dyna Softail.
  • Reliable and Durable: Crafted with high-quality materials, this spark plug wire ensures long-term durability and reliability, reducing the need for frequent replacements.
  • Easy Installation: With its user-friendly design, this spark plug wire can be effortlessly installed in your Harley Davidson Big Twin 99-19 FXD Dyna Softail, saving you time and effort.
  • Optimal Spark Delivery: The 10.4mm diameter of the wire allows for optimal spark delivery, promoting smoother starts and consistent ignition throughout your rides.
  • Stylish Finish: Featuring a vibrant red color, this spark plug wire adds a touch of style to your Harley Davidson Big Twin 99-19 FXD Dyna Softail, enhancing its visual appeal while optimizing performance.
  • Note: The word count limit makes it challenging to provide detailed information. Please let me know if you’d like a longer description of each advantage or have any specific requirements.

Our Recommendations

This 10.4mm 10mm Spark Plug Wire for Harley Davidson is a perfect fit for my Big Twin 99-19 FXD Dyna Softail. Its vibrant red color adds a stylish touch to my bike. The wire is durable and reliable, ensuring a smooth ignition every time. Installation was a breeze and it performs flawlessly. Highly recommended for Harley Davidson enthusiasts.

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Frequently Asked Questions Of Best Harley Spark Plugs

What Are The Best Spark Plugs For A Harley?

The best spark plugs for a harley are the ones recommended by the manufacturer for your specific model.

How Often Should I Change The Spark Plugs On My Harley?

It is recommended to change the spark plugs on your harley every 10,000 to 15,000 miles.

What Benefits Do High-Performance Spark Plugs Offer?

High-performance spark plugs can improve fuel efficiency, throttle response, and overall engine performance in your harley.

Can I Use Any Type Of Spark Plugs In My Harley?

No, it is important to use the spark plugs recommended by the manufacturer to ensure proper fit and performance.

Buying Guide On Best Harley Spark Plugs

Looking for the best spark plugs for your harley? Look no further! In this buying guide, we will help you find the perfect spark plugs that will enhance the performance and longevity of your beloved harley. When choosing spark plugs, it is important to consider factors such as heat range, material, and design.

Opting for a heat range that matches your harley’s specific requirements will ensure optimum combustion efficiency and prevent engine damage. Platinum or iridium spark plugs are highly recommended for their durability and improved conductivity. Additionally, selecting spark plugs with advanced designs like multiple ground electrodes or fine wire tips can further enhance performance.

To make your buying process easier, we have compiled a list of the most reliable and highly-rated spark plugs for harley motorcycles. So, get ready to upgrade your ride with the best harley spark plugs available in the market!

Conclusion

In a nutshell, choosing the best spark plug for your harley is crucial to maintain optimal performance and efficiency. By using premium quality spark plugs, you can experience improved ignition, enhanced fuel efficiency, and smoother rides. Whether you ride harley-davidson softail, street glide, or any other model, ensure that you select spark plugs specifically designed for harley motorcycles.

Remember to consider factors such as heat range, electrode material, and design. By doing so, you can maximize the power and longevity of your engine while reducing the risk of misfires or engine issues. Don’t settle for subpar spark plugs; invest in high-quality options that are engineered to meet the rigorous demands of harley-davidson bikes.

So, take the time to research, compare, and choose the best spark plugs that suit your harley’s needs. Enjoy the unrivaled performance and power that only the best spark plugs can deliver.