Best Spark Plugs for Harley

With the help of this article, you will be able to have a broader understanding of best spark plugs for harley, 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 spark plugs for harley that best suited for you, no worries; I have you covered. I have put together here a list of the best spark plugs for harley currently available.

Top 10 Best Spark Plugs for Harley

Reviews on 10 Top Rated Spark Plugs for Harley

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

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
Motoforti 2 Pcs 10.4mm 10mm Spark Plug Wire Kit for Harley Davidson Big Twin FXD Dyna 2000-2017 for Harley-Davidson Softail 1999-2017 Spark Plug Wires Motorcycle DYNA-409RD Red Silicone
  • [OE Number] DYNA-409RD. This is available for street or race applications.
  • [Fitment] For Harley-davidson Dyna FXD 2000-2017, For Harley-davidson Softail 1999-2017. Normally fit for like factory location on cylinder for Harley-Davidson or Big-Twin which has the coil mounted on the seat post. Please confirm make/model/year and size of the spark plug before purchase.
  • [Features] Come with 10.4mm & 10mm rubber ends, black 90 degree and straight boots for pre-crimped. Adopted with silicone material for whole jacket, insulation and core to bear high-temperature.
  • [Function] Prolong the service time of the engine and reduce fuel waste. A replacement for wire, relocation kits, new look, bobbers, scramblers, cafe racer etc.
  • [Package] Include 2x Spark plug wire pre-crimped. Please connect it with original way or search professional video when replace it in doubt.
Spark Plug Wires Black 8.8mm For Davidson 883 1200 Sportster XL 86-03,‎2104-0143,144025,Black, Vanshly
  • √【OEM Part Number】:2104-0143
  • √【Compatible with】:2002-2003 Davidson 883 Roadster XLR ,1996-2003 Harley-Davidson 1200 Custom XLC ,1999-2003 Harley-Davidson 883 Custom XLC ,1988-2003 Harley-Davidson Sportster 1200 XLH ,1986-2003 Harley-Davidson Sportster 883 XLH ,1986-1987 Harley-Davidson Sportster 1100 XLH ,1986-1995 Harley-Davidson 883 Deluxe XLH ,1987-2003 Harley-Davidson 883 Hugger XLH ,1996-1997 Harley-Davidson 1200 Sport XLS ‎
  • √【High-Quality】:The spark plug wire kit is made of high-quality materials, with wear resistance, high reliability, long service life and stable performance. Helps provide maximum voltage and ensures final performance.
  • √【Function description】:The spark plug wire is used as the medium between the ignition coil and the spark plug to power the engine. It can transfer the high-pressure fire distributed by the distributor to the spark plug and then drive the engine to rotate. Engine spark plug wire damage will cause engine fire and cause engine shaking. Timely replacement of damaged spark plug wires can prolong the service life of the engine and reduce fuel waste.
  • √【Warm Tips】:If you encounter problems during the installation process, please contact us immediately,Please make sure your model matches what is listed he
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.
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
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
  • Fit type: Universal Fit
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
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


The article ends here, detailing the best spark plugs for harley. 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 2023-03-26 / Affiliate links / Images from Amazon Product Advertising API


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