Best Harley Spark Plugs

With the help of this article, you will be able to have a broader understanding of best harley spark plugs, as I will be discussing the features, pros, and cons in detail. Other than that, make sure to read until the end.

If you don’t have the time or the energy to look for the harley spark plugs that best suited for you, no worries; I have you covered. I have put together here a list of the best harley spark plugs currently available.

Top 10 Best Harley Spark Plugs

Reviews on 10 Top Rated Harley Spark Plugs

If you are looking for the Best Harley Spark Plugs, then any of these 10 would be a great choice for you.

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.
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
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
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
  • Color of plug may vary
Road Glide 1999-2014 Performance Spark Plugs Pair repl. OEM# 6R12
  • Conventional style spark plugs, available in OEM heat ranges
  • Plugs have a unique look with a black ceramic body
  • Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation
  • Sold in Pairs
  • Road Glide 1999-2014
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
CARBEX 10.4mm 10mm Spark Plug Wire for Harley Davidson Big Twin 99-19 FXD Dyna Softail (BLUE)
  • ❥100% brand new and high quality.
  • ❥Black 90 degree and straight boots.
  • ❥Suppression core wire, Taylor "409" blue .
  • ❥High Quality terminals.
  • ❥Package Include: 8" and one 20" long wires pre-crimped as images show.


The article ends here, detailing the best harley spark plugs. However, the best option for each person will vary depending on their individual needs and preferences. But here, the products we have listed above, have great features and are highly rated by customers. So, I hope that it may have helped you finalize your decision to choose the best one for you.

Last update on 2023-03-30 / Affiliate links / Images from Amazon Product Advertising API


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