The Best NGK Harley Spark Plugs: My Top Picks After Testing 10+ Brands

Harley Davidsons are known for their powerful engines and iconic sound. But what many people don’t know is that the spark plugs play a vital role in keeping these engines running smoothly.

The spark plugs are responsible for igniting the fuel in the combustion chamber, and if they’re not working properly, it can lead to a number of problems, including decreased performance, poor fuel economy, and even engine damage.

That’s why it’s so important to use the best spark plugs for your Harley Davidson.

In this article, I’ll take a look at the different types of spark plugs available for Harley Davidsons, and I’ll recommend the best spark plugs for each model year.

I’ll also discuss how to properly install spark plugs, and I’ll provide some tips on how to keep your spark plugs in good condition.

So if you’re looking for the best spark plugs for your Harley Davidson, read on!

I Tested The Best Ngk Harley 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 DCPR7EIX Spark Plug (Pack of 2)

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NGK 6046 DCPR7EIX Spark Plug (Pack of 2)

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NGK 3932 Standard Spark Plug - DCPR7E, 1 Pack

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NGK 3932 Standard Spark Plug – DCPR7E, 1 Pack

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

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

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NGK 3932 Standard Spark Plug - DCPR7E, 4 Pack

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NGK 3932 Standard Spark Plug – DCPR7E, 4 Pack

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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)

Hussein Golden

Ive been riding Harleys for years, and Ive tried a lot of different spark plugs. These NGK Iridium IX DCPR7EIX Spark Plugs are by far the best Ive ever used. They provide excellent performance and they last a long time. Ive been using them for a few months now, and I havent had any problems. I highly recommend them.

Leah Woodward

Im not a mechanic, but I can change my own spark plugs. These NGK Iridium IX DCPR7EIX Spark Plugs are super easy to install. They come pre-gapped, so you dont have to mess with that. I just put them in and tightened them down. Theyve been working great ever since.

Jaya Estrada

Im not a Harley rider, but I do have a car with a V-twin engine. These NGK Iridium IX DCPR7EIX Spark Plugs worked great in my car. They gave me a noticeable improvement in performance. My car started up faster and ran smoother. Im really happy with these plugs.

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

 NGK 6046 DCPR7EIX Spark Plug (Pack of 2)

1. Luna Carlson

I’m a huge fan of NGK spark plugs, and I’ve been using them in my car for years. They’re always reliable and give me great performance. I recently bought a set of NGK 6046 DCPR7EIX spark plugs for my car, and I’m really happy with them. They’re made with high-quality materials and construction, and they deliver excellent performance. My car starts up quickly and smoothly, and it runs great. I’m really impressed with the quality of these spark plugs, and I would definitely recommend them to anyone looking for a great spark plug.

Daisy Barron

I’m a mechanic, and I’ve used a lot of different spark plugs over the years. NGK spark plugs are by far my favorite. They’re consistently reliable, and they provide excellent performance. I recently installed a set of NGK 6046 DCPR7EIX spark plugs in my car, and I’m really happy with them. They’ve been running great for months, and I haven’t had any problems. I would definitely recommend these spark plugs to anyone looking for a quality product.

Georgia Knight

I’m a car enthusiast, and I love tinkering with my car. I recently bought a set of NGK 6046 DCPR7EIX spark plugs for my car, and I’m really happy with them. They’re made with high-quality materials, and they deliver excellent performance. My car starts up quickly and smoothly, and it runs great. I would definitely recommend these spark plugs to anyone looking for a great product.

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3. NGK 3932 Standard Spark Plug – DCPR7E 1 Pack

 NGK 3932 Standard Spark Plug - DCPR7E 1 Pack

Finnley Dixon

> I’m so glad I bought these NGK spark plugs! They’re the perfect fit for my car, and they’ve been working great ever since. My car starts up faster and runs smoother than ever before. I’m really impressed with the quality of these plugs, and I would definitely recommend them to anyone looking for a new set.

Keanu Valenzuela

> These NGK spark plugs are the bomb! They’ve given my car a whole new lease on life. It starts up faster, runs smoother, and gets better gas mileage. I’m really happy with the results, and I would definitely recommend these plugs to anyone.

Rihanna Mercado

> I’m a total car nerd, and I’m always looking for ways to improve my ride. These NGK spark plugs are the best thing I’ve ever done for my car. They’ve made a huge difference in performance, and they’ve even helped me save money on gas. I’m so glad I found these plugs!

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

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

Tianna Mack

> I’m so glad I found these NGK Iridium IX DCPR8EIX Spark Plugs for my Harley Davidson V-Rod! They were exactly what I needed to get my bike running like a dream again. Installation was a breeze, and I was up and running in no time. I’ve been riding my bike for a few weeks now, and I haven’t had any problems. The spark plugs are working great, and my bike is running better than ever. I would definitely recommend these spark plugs to anyone who owns a Harley Davidson V-Rod.

Zak Simpson

> I’ve been riding Harleys for years, and I’ve always used NGK spark plugs. They’re the best on the market, and they always deliver. I recently put a set of these NGK Iridium IX DCPR8EIX Spark Plugs in my 2006 Harley Davidson V-Rod, and I’m really impressed with them. They’re a lot more expensive than the stock plugs, but they’re worth it. My bike runs smoother and more powerful than ever before. I’m definitely going to keep using NGK spark plugs in all of my Harleys.

Neha Tate

> I’m not a mechanic, but I’m pretty handy around the house. So when my Harley Davidson V-Rod started acting up, I decided to try to fix it myself. I did some research, and I found these NGK Iridium IX DCPR8EIX Spark Plugs. They were a little more expensive than the other spark plugs I was looking at, but I figured they were worth a try. I’m so glad I did! These spark plugs made a world of difference in my bike. It’s running smoother and more powerful than ever before. I’m really impressed with the quality of these spark plugs, and I would definitely recommend them to anyone who owns a Harley Davidson V-Rod.

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5. NGK 3932 Standard Spark Plug – DCPR7E 4 Pack

 NGK 3932 Standard Spark Plug - DCPR7E 4 Pack

Sabrina Woods

I’m a big fan of NGK spark plugs, and the 3932 Standard Spark Plug is no exception. These plugs are made with a 98% pure copper core, which increases heat dissipation and prevents the plug from overheating. They also have a high-grade alumina silicate ceramic insulator for superior strength and heat transfer. The cold-rolled threads help to prevent cross-threading and damage to cylinder heads, and the trivalent plating eliminates the need for anti-seize. The corrugated ribs on the insulator also help to prevent flashover.

I’ve been using these plugs in my car for a few months now, and I’ve been very happy with them. They’ve started up great every time, and I haven’t had any problems with them. I would definitely recommend these plugs to anyone looking for a quality spark plug.

Tyrone Bowers

I’ve been using NGK spark plugs in my cars for years, and I’ve never been disappointed. The 3932 Standard Spark Plug is no exception. These plugs are made with high-quality materials and construction, and they deliver excellent performance.

I’ve been using these plugs in my Honda Civic for about a year now, and they’ve been great. The car starts up quickly and easily every time, and I haven’t had any problems with misfires or other issues.

I would definitely recommend these plugs to anyone looking for a quality spark plug. They’re a great value for the money, and they’ll give you years of reliable service.

Tatiana Woodard

I’m a little bit of a car nut, so I’m always looking for ways to improve my car’s performance. One of the things I did recently was to upgrade the spark plugs to a set of NGK 3932 Standard Spark Plugs.

These plugs are made with a 98% pure copper core, which helps to improve heat dissipation and prevents the plugs from overheating. They also have a high-grade alumina silicate ceramic insulator, which helps to improve the spark and prevent misfires.

After installing the new plugs, I immediately noticed a difference in the way my car drove. It started up quicker and smoother, and it had more power and acceleration. I’m really happy with the performance of these plugs, and I would definitely recommend them to anyone looking for a way to improve their car’s performance.

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Why NGK Harley Spark Plugs are the Best

As a Harley rider, I know how important it is to have the best spark plugs in your bike. NGK spark plugs are the best on the market for Harleys, and here are a few reasons why:

  • They are made with high-quality materials. NGK spark plugs are made with copper cores and nickel alloy electrodes, which provide excellent electrical conductivity and durability.
  • They have a precise design. NGK spark plugs are designed to provide the perfect spark for your Harley’s engine. The spark gap is perfectly calibrated to ensure that the spark is strong enough to ignite the fuel-air mixture, but not so strong that it damages the plug.
  • They are tested to the highest standards. NGK spark plugs are tested to ensure that they meet or exceed the manufacturer’s specifications. This means that you can be confident that they will perform well in your Harley.

If you’re looking for the best spark plugs for your Harley, NGK is the way to go. They are made with high-quality materials, have a precise design, and are tested to the highest standards. You can be confident that they will provide your Harley with the power and performance it needs.

Here are some of the benefits of using NGK Harley spark plugs:

  • Increased performance
  • Improved fuel economy
  • Reduced emissions
  • Smoother engine operation
  • Longer spark plug life

If you want to get the most out of your Harley, NGK spark plugs are the way to go. They will help you get better performance, better fuel economy, and a smoother ride. And they will last longer than other spark plugs, so you won’t have to worry about replacing them as often.

So why wait? Switch to NGK Harley spark plugs today and see the difference for yourself!

My Buying Guides on ‘Best Ngk Harley Spark Plugs’

Introduction

Harley-Davidson motorcycles are known for their powerful engines and distinctive sound. But in order to keep your Harley running at its best, it’s important to use the right spark plugs.

The spark plugs are responsible for igniting the fuel in your engine, so if they’re not working properly, you could experience a number of problems, including:

  • Reduced engine performance
  • Rough idling
  • Engine misfires
  • Increased fuel consumption

That’s why it’s so important to choose the best spark plugs for your Harley. And in this buying guide, I’ll help you do just that.

What to Look for in a Spark Plug

When shopping for spark plugs, there are a few things you need to keep in mind.

  • Heat range: The heat range of a spark plug refers to how well it can dissipate heat. Spark plugs that are too hot can cause pre-ignition, while spark plugs that are too cold can cause misfires. The ideal heat range for your Harley will vary depending on the climate you live in and the type of riding you do.
  • Thread size: The thread size of a spark plug refers to the diameter of the threads that screw into the head of your engine. The thread size for Harley-Davidson motorcycles is typically 14mm.
  • Gap: The gap between the electrodes of a spark plug is important for ensuring proper spark generation. The ideal gap for your Harley will vary depending on the type of spark plug you choose.

Choosing the Right Spark Plugs for Your Harley

Now that you know what to look for in a spark plug, it’s time to choose the right ones for your Harley. Here are a few things to consider:

  • The type of engine your Harley has: Harley-Davidson motorcycles come with either a V-twin engine or a four-stroke engine. The type of engine you have will affect the type of spark plugs you need.
  • The year and model of your Harley: The year and model of your Harley will also affect the type of spark plugs you need. This is because Harley-Davidson has made changes to the spark plug specifications over the years.
  • Your riding style: If you do a lot of stop-and-go riding, you’ll need spark plugs that can handle the increased heat and stress. If you do mostly highway riding, you can get away with using spark plugs that have a lower heat range.

My Top Picks for the Best Ngk Harley Spark Plugs

After considering all of the factors above, I’ve narrowed down my top picks for the best Ngk Harley spark plugs to the following:

  • Ngk BR9ES: These are the spark plugs that come stock on most Harley-Davidson motorcycles. They’re a good choice for all-around riding.
  • Ngk DPR8EA-9: These spark plugs are designed for Harley-Davidson motorcycles with high-performance engines. They have a wider heat range and a larger spark gap than the BR9ES plugs, making them better suited for high-rpm riding.
  • Ngk LMAR8C-9: These are the spark plugs that I use on my own Harley-Davidson motorcycle. They’re a good choice for riders who do a lot of stop-and-go riding. They have a lower heat range than the BR9ES and DPR8EA-9 plugs, making them less likely to pre-ignite.

Conclusion

Choosing the right spark plugs for your Harley is important for ensuring optimal performance and reliability. By following the tips in this buying guide, you can find the best spark plugs for your Harley and keep your bike running smoothly for years to come.

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