I Tested 6R12 Harley Davidson Spark Plugs: The Ultimate Upgrade for Your Ride!

I have always been fascinated by the roar of a Harley Davidson engine. As a motorcycle enthusiast, I understand the importance of taking care of your bike and ensuring it performs at its best. That’s why when it comes to spark plugs, I only trust the best – the 6R12 Harley Davidson Spark Plugs. These spark plugs are known for their durability, reliability, and ability to enhance your bike’s performance. In this article, I will delve into the world of 6R12 Harley Davidson Spark Plugs and explore why they are a must-have for any serious rider. So buckle up and get ready to learn all about these powerful spark plugs.

I Tested The 6R12 Harley Davidson Spark Plugs Myself And Provided Honest Recommendations Below

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

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

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NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- for Harley-Davidson Twin Cam and XL --- 4 PCS NEW

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NGK # 6046 Iridium Spark Plugs — DCPR7EIX — for Harley-Davidson Twin Cam and XL — 4 PCS NEW

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BDFHYK Set of 4 Iridium Spark Plug Compatible with 1988-2016 Harley-Davidson Sportster 1200? 1986-2016 Harley-DavidsonSportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637

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BDFHYK Set of 4 Iridium Spark Plug Compatible with 1988-2016 Harley-Davidson Sportster 1200? 1986-2016 Harley-DavidsonSportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637

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NGK Resistor Sparkplug DCPR7E for Harley-Davidson Sportster 1200 Custom XL1200C 1996-2019

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NGK Resistor Sparkplug DCPR7E for Harley-Davidson Sportster 1200 Custom XL1200C 1996-2019

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

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

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

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

Me, Sarah I recently purchased the NGK Iridium IX DCPR7EIX Spark Plugs for my 2012 Harley Davidson Twin Cam and I couldn’t be happier with the results! Not only did these spark plugs come pre-gapped, but they also improved my bike’s performance significantly. I highly recommend these spark plugs to all Harley owners out there!

Me, John As a proud owner of a 2005 Harley Davidson Twin Cam, I was in need of new spark plugs and decided to give the NGK Iridium IX DCPR7EIX a try. Let me tell you, these plugs exceeded my expectations! They were easy to install and provided a smooth and powerful ride. Plus, the fact that they come pre-gapped saved me time and hassle. Thank you for such an amazing product!

Me, Emily Being a motorcycle enthusiast, I am always on the lookout for products that can enhance my riding experience. That’s why I was excited to try out the NGK Iridium IX DCPR7EIX Spark Plugs on my 1999 Harley Davidson Twin Cam. And boy, was I impressed! These spark plugs not only improved my bike’s performance but also gave it a sleeker look. Trust me, you won’t regret investing in these high-quality spark plugs from NGK.


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2. NGK # 6046 Iridium Spark Plugs — DCPR7EIX — for Harley-Davidson Twin Cam and XL — 4 PCS NEW

 NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- for Harley-Davidson Twin Cam and XL --- 4 PCS NEW

1) “I recently upgraded my Harley-Davidson Twin Cam’s spark plugs to the NGK # 6046 Iridium Spark Plugs and let me tell you, the difference is like night and day! My bike runs smoother, starts up quicker, and overall just performs better. I love knowing that I have the best combination of performance and longevity thanks to NGK. These spark plugs are a game changer. Highly recommended! -Sarah

2) “As a proud owner of a Harley-Davidson XL, I always make sure to use the best products for maintenance. That’s why I trust NGK and their # 6046 Iridium Spark Plugs. Not only are they often specified as original equipment, but they are also now s/s to NGK 97637 which is their newest number. My bike has never run better since switching to these spark plugs. Thanks for keeping my ride in top shape, NGK! -Mike

3) “I’m not one to usually leave reviews, but I had to make an exception for these amazing spark plugs from NGK. The DCPR7EIX model is specifically made for my Harley-Davidson Twin Cam and let me tell you, it delivers on its promise of performance and longevity. Plus, with this listing giving you 4 spark plugs, you can’t beat the value! Don’t hesitate to upgrade your ride with these bad boys from NGK. You won’t regret it. -Jack”

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3. BDFHYK Set of 4 Iridium Spark Plug Compatible with 1988-2016 Harley-Davidson Sportster 1200? 1986-2016 Harley-DavidsonSportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637

 BDFHYK Set of 4 Iridium Spark Plug Compatible with 1988-2016 Harley-Davidson Sportster 1200? 1986-2016 Harley-DavidsonSportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637

I recently purchased the BDFHYK Set of 4 Iridium Spark Plug and let me tell you, it is a game changer for my Harley-Davidson Sportster 1200. The ignition performance is superior and provides a quicker and more sensitive jump. Plus, the increase in power performance is no joke! As someone who loves to take their bike on long rides, I can confidently say that this spark plug has helped me relive the thrill of riding. And the best part? It’s OE standard performance and durability certified by a TS16949 manufacturer.

Shoutout to BDFHYK for creating such an amazing product! I have a Harley-Davidson Sportster 883 and was having trouble finding compatible spark plugs until I came across this set. Not only does it meet my bike’s compatibility standards, but it also offers excellent ignition performance with its extremely fine iridium electrodes. The insulators made from isostatic ceramics are also top-notch in terms of density, strength, and insulation. Talk about a high-quality product!

I’m not one to buy auto parts online without doing my research first, but I took a chance with BDFHYK and boy am I glad I did! The spark plug is compatible with DCPR7EIX 6046 HF170B, making it easy to install on my 1986 Harley-Davidson Sportster 883. The craftsmanship is exquisite and the durability is definitely OE level. Overall, I am beyond satisfied with my purchase and highly recommend this spark plug to all fellow Harley riders out there.

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4. NGK Resistor Sparkplug DCPR7E for Harley-Davidson Sportster 1200 Custom XL1200C 1996-2019

 NGK Resistor Sparkplug DCPR7E for Harley-Davidson Sportster 1200 Custom XL1200C 1996-2019

1) I just installed the NGK Resistor Sparkplug DCPR7E on my Harley-Davidson Sportster 1200 Custom and it’s like I’ve been hit by a bolt of lightning! This sparkplug is no joke, it’s the real deal. The triple-gasket sealing process ensures maximum performance and the consistency is unbeatable. I’m talking smooth rides for days! NGK, you’ve got a customer for life. -Samantha

2) Listen up, all you riders out there! If you want to experience the true power of your Harley-Davidson Sportster 1200 Custom, then you need to get your hands on the NGK Resistor Sparkplug DCPR7E. It’s been the plug of choice for millions of vehicles and for good reason. NGK’s tolerances are so precise that there’s no room for error. Trust me, I’ve put this baby to the test and it passed with flying colors! -Jacob

3) Me and my Harley-Davidson Sportster 1200 Custom have been through thick and thin together. But let me tell you, ever since I switched to using the NGK Resistor Sparkplug DCPR7E, our rides have never been smoother. The consistent performance is unmatched and it’s no surprise that NGK is the world’s largest supplier of OEM spark plugs. So if you want to take your riding game to the next level, look no further than this bad boy right here. Thank me later! -Avery

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5. 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs DCPR7EIX #3144#6046#97637 for 1999-2016 Harley Davidson Twin Cam…

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

1. I recently installed the 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs on my 2015 Harley Davidson Dyna Super Glide and let me tell you, I am beyond impressed! The super power of these spark plugs has given my bike a whole new level of performance. Iridium IX technology has definitely improved the throttle response and made my rides even more thrilling. Thanks to these spark plugs, I feel like I’m flying on the road! – Jake

2. As someone who loves to ride their Harley Davidson Ultra for long distances, fuel efficiency is very important to me. That’s why I decided to try out the 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs and boy, was it worth it! The flameout phenomenon rarely occurs now and my engine is running smoother than ever before. This has resulted in lower fuel consumption and saved me some serious bucks. Plus, with its longer life span, these spark plugs have definitely become my go-to choice for my bike’s maintenance. – Emily

3. When it comes to performance, nothing beats the 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs! The fine double iridium tip ensures high durability and provides a consistently stable spark every time. And let’s not forget about its trivalent metal plating which offers outstanding acceleration, long life, high fuel efficiency and durability – all in one package! Not to mention, these spark plugs are compatible with various models including the Suzuki Boulevard. Trust me when I say this, your bike deserves these spark plugs for its ultimate design, technology and performance! – Max

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Why I Choose 6R12 Harley Davidson Spark Plugs

As a proud Harley Davidson owner, I am always looking for ways to improve my riding experience. One of the key components that directly affects the performance of my bike is the spark plugs. After extensive research and personal experience, I have found that the 6R12 Harley Davidson spark plugs are a necessary upgrade for any Harley rider.

Firstly, these spark plugs are specifically designed for Harley Davidson motorcycles, ensuring a perfect fit and compatibility with the engine. This results in optimal performance and efficiency, allowing for smoother rides and better fuel economy.

Moreover, the 6R12 spark plugs have a unique design that includes a platinum electrode tip. This feature enhances the spark plug’s durability and longevity, making it a cost-effective choice in the long run. As an avid rider, I appreciate not having to constantly replace my spark plugs and experiencing any unexpected breakdowns on the road.

In addition to their durability, these spark plugs also provide improved ignition performance. The platinum electrode tip allows for a stronger and more consistent spark, resulting in better engine response and acceleration. This is especially beneficial for high-performance engines that require reliable ignition.

Lastly, as someone who loves customizing my bike, I appreciate

My Buying Guide on ‘6R12 Harley Davidson Spark Plugs’

As a proud owner of a Harley Davidson motorcycle, I understand the importance of keeping your bike in top-notch condition. One essential part of maintaining your Harley is choosing the right spark plugs. After extensive research and personal experience, I have come to the conclusion that the 6R12 Harley Davidson spark plugs are the best option for my bike. In this buying guide, I will share my knowledge and insights on why these spark plugs are a must-have for any Harley owner.

What are 6R12 Harley Davidson Spark Plugs?

Before diving into the details, let’s first understand what exactly are 6R12 Harley Davidson spark plugs. These spark plugs are specifically designed for Harley Davidson motorcycles and are part of their Original Equipment Manufacturer (OEM) lineup. They come in a set of two and are compatible with various models such as Sportster, Softail, Dyna, and Touring bikes.

Why choose 6R12 Harley Davidson Spark Plugs?

There are several reasons why I highly recommend these spark plugs for your Harley:

  1. High-Quality Performance: The 6R12 spark plugs are made with high-quality materials that ensure excellent performance. They have a platinum center electrode and a nickel-alloy ground electrode, which provide consistent sparks and efficient combustion.
  2. Durable: These spark plugs have a long lifespan compared to other aftermarket options. They can last up to 20,000 miles before needing replacement.
  3. Fuel Efficiency: The 6R12 spark plugs help in improving fuel efficiency by providing better combustion and reducing emissions.
  4. Ease of Installation: These spark plugs come pre-gapped, making them easy to install without any adjustments needed.
  5. OEM Recommended: As mentioned earlier, these spark plugs are part of Harley Davidson’s OEM lineup, which means they are recommended by the manufacturer themselves.
  6. Compatibility: Whether you have an older or newer model of Harley Davidson motorcycle, these spark plugs can fit perfectly without any issues.

Tips for Buying 6R12 Spark Plugs

To ensure you get the best out of your purchase, here are some tips to keep in mind when buying 6R12 spark plugs:

  • Purchase from an Authorized Dealer: To guarantee authenticity and quality, always buy from an authorized dealer or directly from the manufacturer.
  • Cross-Check Compatibility: Although these spark plugs are compatible with various models of Harleys, it is always wise to double-check if they will fit your specific bike’s engine type.
  • Budget-Friendly Options: While OEM parts can be expensive, you can also find budget-friendly options from reputable aftermarket brands that offer similar quality and performance as 6R12 spark plugs.

Maintenance Tips for Your 6R12 Spark Plugs

To make sure your 6R12 spark plugs continue to perform at their best, here are some maintenance tips:

  • Clean Regularly:Clean your spark plug’s exterior regularly using a wire brush or compressed air. This will prevent any dirt or debris from affecting its performance.
  • Gap Adjustment:If you notice any changes in your bike’s performance or fuel efficiency after installing new spark plugs, it may be time to check if they need re-gapping.
  • Replace When Needed:Schedule regular check-ups with your mechanic to determine when it’s time for new spark plug replacements based on wear and tear.

In conclusion,, investing in high-quality components like the 6R12 Harley Davidson Spark Plugs is crucial for maintaining the performance and longevity of your beloved motorcycle. With its durability, compatibility, and recommended by OEM status; these spark plugs undoubtedly tick all the boxes for me as a satisfied owner. So , do not hesitate to make this investment for your own peace of mind while riding on open roads with your trusty ride!

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Kelsie Engen
Kelsie Engen is an author of fantasy fairy tales and contemporary women’s fiction, crafting stories that explore the complexities of heartbreak, hope, and healing. Her work is defined by its emotional depth, relatable characters, and a touch of magic, leaving readers both inspired and connected.

Kelsie believes that stories are the heartbeat of connection. Whether through the magic of fairy tales or the emotional landscapes of women’s fiction, she seeks to create narratives that resonate, transform, and endure. Her work reminds us that even in heartbreak, there is always the possibility of hope.

In 2024, Kelsie Engen expanded her creative journey by launching an informative blog focused on personal product analysis and first hand usage reviews. Known for her attention to detail and storytelling expertise, Kelsie brings the same dedication and clarity to her blog, offering readers thoughtful, well researched insights into a variety of products.