Navigating the many Best Harley Spark Plugs options on the market – from major brands like NGK,E3,CNPAPC to lesser-known names – can feel overwhelming. But we’re here to help simplify your search for the best products.
After extensive research testing hundreds of Best Harley Spark Plugs, we’ve selected the top contenders. Our number one recommendation is NGK Best Harley Spark Plugs based on its stellar performance and quality. Below you’ll find more of our top-rated picks for the best Best Harley Spark Plugs currently available.
Be sure to consult our handy buying guide as well for expert tips on choosing the right Best Harley Spark Plugs to suit your individual needs. It has all the crucial information you need to make an informed purchasing decision. With our guidance backing your choice, finding your perfect match will be smooth sailing!
Editor's Choice
NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)
Budget Pick
2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs DCPR7EIX #3144#6046#97637 for 1999-2016 Harley
Top 10 Best Harley Spark Plugs
We researched and compared the top products in the Best Harley Spark Plugs category to provide you with these recommendations.
1. NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)
- Come pre-gapped
2. NGK 6046 DCPR7EIX Spark Plug (Pack of 2)
- Quality Assured
3. NGK CR9EIX - Iridium IX Spark Plug - 4-Pack/--
- 4 pack NGK Iridium IX 3521 Spark Plug
- Genuine NGK Parts
- Includes original packaging and hardware
- Direct replacement auto parts
- Confirm vehicle fitment with Amazon Confirmed Fit
4. E3 Spark Plugs E3.36 Powersports Spark Plug (1) (E336)
- 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
5. NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- for Harley-Davidson Twin Cam and XL --- 4 PCS NEW
- NGK 6046 now s/s to NGK 97637
- NGK 97637 DCPR7EIX is the Newest Number
- NGK is the world's largest supplier of OEM spark plugs
- Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.
- This Listing is for 4 Spark Plugs
6. 2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs DCPR7EIX #3144#6046#97637 for 1999-2016 Harley
- SUPER POWERDouble 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 EFFICIENTThe 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 LIFEThe 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 MODELSDCPR7EIX #3144 Replacement racing spark plug used by many professional car drivers and fit for 2000 Dyna Super Glide1999-2016 Harley Davidson Twin CamXL Sportster 883/1200 1986-present; UltraSuzuki Boulevard ;If it has the same parameters as this product, it can be compatible
- QUICK AFTER SALES SERVICEOne 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.
7. 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
8. BDFHYK Set of 4 Iridium Spark Plug Compatible with 1988-2016 Harley-Davidson Sportster 1200，
- Precautions for Purchase:Compatible with 1988-2016 Harley-Davidson Sportster 1200 1986-2016 Harley-DavidsonSportster 883.Please confirm the compatibility according to the year/make/model of your vehicle and the OE number of the replaceable part.
- Spark Plug Features:BDFHYK Spark Plugs offer superior ignition performance, quicker and more sensitive ignition jumping, and a significant increase in power performance.
- Relive Performance:OE standard performance and durability TS16949 certified manufacturer. All center electrodes are made from extremely fine iridium electrodes for good ignition performance. Insulators are made from isostatic ceramics for high density, strength, and good insulation.
- Compatible Part Numbers:Spark Plug compatible to DCPR7EIX 6046 HF170B.
- Buy with Confidence: Exquisite craft,100% new and high quality auto parts,OE level durability.
9. OYEAUTO CR9EIX Iridium IX Spark Plug 4 Pack Compatible with Aprilia Arctic Cat Cannondale Ducati
- Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize. This motorcycle spark plug reference number: 3521,CR9EB,242045004,F002G40504,267700-1020,U27FE9,267700-0520,RGU94C,G55R,90793-20123,90793-22086
- The Iridium fine wire center electrode's durability is six times harder than platinum.Iridium alloys extremely high melting point is perfect for today's motorcycle engines .
- Long life spark plugs manufactured to OEM service interval specifications.
- Improve fuel economy, better acceleration and faster starts than other plugs.
- 12-month-warranty:During the warranty,if there is any problem with your plug,please contact us,we will refund you or send you a brand new replacement.
10. NGK Resistor Sparkplug DCPR7E for Harley-Davidson Sportster 1200 Custom XL1200C 1996-2019
- Triple-gasket sealing process.
- Consistent performance.
- Plug of choice in millions of vehicles.
- NGK is the world's largest supplier of OEM spark plugs.
- Tolerances are so close that the margin for error is near zero.
Peter
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