Best Harley Spark Plugs 2022: Top 15 Picks

Sometimes it might be quite difficult to find the best harley spark plugs. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this harley spark plugs buying guide.

We Recommend:

Best Harley Spark Plugs Reviews:

SaleBestseller No. 1
NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)
  • Come pre-gapped
  • The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode
  • Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
  • The ultimate in spark plug technology and performance from the industry leader
  • New metal shell plating has enhanced anti corrosion qualities
Bestseller No. 2
NGK 3521 CR9EIX Spark Plug (Iridium IX)
  • OEM/OES Manufacturer
  • High Quality
  • World Wide Leader
Bestseller No. 3
NGK 3932 Standard Spark Plug - DCPR7E, 1 Pack
  • Fit Type: Universal Fit
  • Package Dimensions: 1.778 H x 7.62 L x 2.286 W (centimeters)
  • Package Weight: 0.1 pounds
  • Country of Origin : Japan
Bestseller No. 4
2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs DCPR7EIX #3144 #6046 #97637 for 1999-2016 Harley Davidson Twin Cam…
  • 【SUPER POWER】Double Iridium IX Spark Plugs are designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response. Double iridium is the best spark plug material
  • 【MORE FUEL EFFICIENT】The flameout phenomenon rarely occurs when using double iridium spark plugs,The engine can also be kept in good running condition, resulting in lower fuel consumption. So it is really necessary to replace the good double iridium spark plugs.
  • 【LONGER LIFE】The fine Double Iridium tip ensures high durability and a consistently stable spark. Double Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines. Trivalent Metal Plating - Outstanding acceleration, long life ,high fuel efficiency and durability. Ultimate design, technology and performance.
  • 【COMPATIBLE MODELS】DCPR7EIX #3144 Replacement racing spark plug used by many professional car drivers and fit for 2000 Dyna Super Glide;1999-2016 Harley Davidson Twin Cam;XL Sportster 883/1200 1986-present; Ultra;Suzuki Boulevard ;If it has the same parameters as this product, it can be compatible
  • 【QUICK AFTER SALES SERVICE】One order = 2 Pieces ,We provide 12 months warranty service for this spark plugs, and we attach great importance to every customer's satisfaction. If for any reason we are not meeting your expectations, please feel free to contact us and we will do our best to resolve all your concerns.
Bestseller No. 5
E3 Spark Plugs E3.36 Powersports Spark Plug, Pack of 1
  • Fit Type: Universal Fit
  • The Patented Diamondfire Ground Electrode Is Secured To The Shell With Two Legs To Help Facilitate Heat Transfer, And To Withstand The Intense Vibration Of Powersport Engine Applications
  • Improved Starts: Patented Edge-To-Edge Design Concentrates Spark Energy, Which Results In Quick And Easy Starts In Any Conditions
  • For High-Performance Engines: Motorcycle Spark Plug For A Variety Of Powersport Applications, Specifically Designed To Increase Power, Reduce Fuel Consumption, And Improve Hydrocarbon Emissions
Bestseller No. 6
NGK 7634 Spark Plug, black
  • Fit type: Vehicle Specific
  • Quality Assured
  • Part number: 7634
  • Included components: SPARK PL
SaleBestseller No. 8
E3 Spark Plugs E3.34 Powersports Spark Plug, Pack of 1
  • FOR HIGH-PERFORMANCE ENGINES: Motorcycle spark plug for a variety of powersport applications, specifically designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions
  • PATENTED TECHNOLOGY: DiamondFIRE ground electrode is secured to the shell with 2 legs that help facilitate optimal heat transfer and withstand the intense vibration of powersport engine applications
  • IMPROVED STARTS: Patented Edge-to-Edge design concentrates spark energy, which results in quick and easy starts in any conditions
  • WHAT'S INCLUDED: One (1) E3.34 spark plug with a 90-day warranty. Features 14mm thread diameter; 0.750-inch thread reach plug with gasket seat; 13/16-inch hex size
  • REPLACES: Champion RN9YC, RN11YC, and RN12YC; NGK BPR5ES, BPR6ES, BPR7ES, and BR5ES
Bestseller No. 10
NGK Iridium IX BKR5EIX-11 Spark Plugs for 1984-2000 Harley Davidson Big Twin (Pair)
  • Come pre-gapped
  • The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode
  • Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
  • The ultimate in spark plug technology and performance from the industry leader
  • New metal shell plating has enhanced anti corrosion qualities
SaleBestseller No. 11
Champion Copper Plus 404 Spark Plug (Carton of 1) - RN12YC
  • Copper Plus - Dependable Performance and Durability
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Inhibits corrosion
  • Built to ISO and SAE standards for proven performance
Bestseller No. 12
TONRYCUE Spark Plug Wires for Harley Davidson Big Twin 1999-2019 FXD Dyna FXDWG Softail
  • Fitment: for Harley Davidson Big Twin 1999-2019 FXD Dyna Softail
  • Material: Made of high quality rubber material, Constructed with silicone throught the jacket, insulation and core to deliver high-temperature resistance
  • Rated Temperature: Rated at SAE Class E J2031 with a continuous operating temperature of 450° F
  • Package Included: 1 * spark plug wires
Bestseller No. 13
Iridium Performance Spark Plugs Pair for Harley Softail Slim Twin Cam repl. Harley# 6R12
  • The ultimate in spark plug technology and performance
  • Iridium electrode is smaller than a standard electrode; requires less voltage
  • Hotter spark and extended spark plug service life compared to conventional plugs
  • Has the distinctive black ceramic with and gold-colored corrosion-protected coating on the metal shell
  • Sold in pairs and replaces Harley# 6R12 / NGK# DCPR7EIX
SaleBestseller No. 14
NGK Iridium IX DCPR8EIX Spark Plugs for 2006-2016 Harley Davidson V-Rod (Pair)
  • Come pre-gapped
  • The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode
  • Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
  • The ultimate in spark plug technology and performance from the industry leader
  • New metal shell plating has enhanced anti corrosion qualities
Bestseller No. 15
V-Twin Performance Spark Plugs Replaces Harley spark plug #6R12.
  • V-Twin perfomance spark plugs features a copper core electrode for a longer service life, nickel plated housing, 95% pure alumina insulator and a heat crimping process to ensure a leak free seal.
  • Fits: FLT 1999-2016, FXST 1999-UP
  • FLST 1999-UP, FXD 1999-2017
  • XL 1986-UP

Last update on 2022-12-09 / Affiliate links / Images from Amazon Product Advertising API

How to find the best harley spark plugs?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best harley spark plugs for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good harley spark plugs recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the harley spark plugs need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for harley spark plugs to find what you’re looking for:

Brand

In some cases, the brand of harley spark plugs is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given harley spark plugs are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about harley spark plugs are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare harley spark plugs quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best harley spark plugs can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.