Looking for some of the best Best Harley Spark Plugs? As you may know, there are dozens of brands available in the market such as NGK,E3,CNPAPC,SYKRSS and some come with vastly different price tags. Let us help you out here – we have handpicked the Best Harley Spark Plugs for you.
To compile our list, we’ve researched and evaluated a range of the best-selling products on the market. We recommend NGK Best Harley Spark Plugs as our top pick because of its exceptional overall performance. Want to explore more options? Read on! There’s also a buying guide to help you make a wise shopping decision.
Editor's Choice
NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)
Premium Pick
2Pcs CNPAPC Iridium IX Spark Plugs DCPR7EIX #3144#6046#97637 for 1999-2016 Harley Davidson Twin Cam
Budget Pick
E3 Spark Plugs E3.36 Premium Powersports Spark Plug for V-Twin Motorcycles, Harley Davidson Engines,
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 Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)
- Come pre-gapped
- The ultimate in spark plug technology and performance from the industry leader
- Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
- New metal shell plating has enhanced anti corrosion qualities
2. E3 Spark Plugs E3.36 Premium Powersports Spark Plug for V-Twin Motorcycles, Harley Davidson Engines,
- UNIVERSAL FIT: The E3.36 spark plug is designed to fit a wide range of powersport applications, including V-Twin motorcycle engines, late-model Harley Davidson engines, and other high-performance vehicles
- DIAMONDFIRE TECHNOLOGY: Patented DiamondFIRE edge-to-edge electrode delivers a faster, more complete burn, increasing power by up to 4%-12% and improving fuel economy by up to 3%-13% depending on engine class
- LOWER EMISSIONS: The more complete burn helps to reduce emissions, minimize carbon buildup, promote cleaner combustion, and support compliance with modern environmental and emissions standards
- ENHANCED PERFORMANCE: Designed for high-performance engines, improves power by up to 12%, enhances fuel efficiency by up to 13%, and helps reduce emissions in both 2-stroke and 4-stroke engines for cleaner operation
- LONG-TERM BENEFITS: Reduces CO and hydrocarbon emissions by up to 58% and 42%, respectively, but also minimizes carbon buildup, contributing to long-term engine health and optimized combustion
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. 2Pcs CNPAPC 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 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 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.
5. NGK (3932) DCPR7E Spark Plug - Pack of 4
- 4 pack NGK Standard 3932 Spark Plug
- Genuine NGK Parts
- Includes original packaging and hardware
- Direct replacement auto parts
- Confirm vehicle fitment with Amazon Confirmed Fit
6. SYKRSS DCPR7EIX Iridium Spark Plugs 4 Pack Compatible with Harley-Davidson Sportster 1200 1988-2016
- OE StandardOur spark plugs meet or exceed OE standards for form,fit and function. Made of high temperature resistant material,it can withstand thermal stress and is durable.Quick and easy installation,excellent and reliable performance.Our premium ignition coil kits are a quick and easy direct replacement for your engine coils, giving your vehicle the spark it needs! Iridium spark plugs DCPR7EIX Replace for 6046 HF170B spark plug.
- CompatibilitySpark plugs Compatible with Harley-Davidson Sportster 1200 1988-2016, Compatible with Harley-Davidson Sportster 883 1986-2016, 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Sportster. Note:Please recheck your vehicle compatibility (year/make/model) in the product description/pictures before purchasing. Please check the OE number: DCPR7EIX 6046 HF170B.
- Excellent QualityThe SYKRSS spark plug is made of precious iridium metal, embedded with copper core, plus ceramic insulator, with strong ignition performance,fast starting, improve fuel efficiency, prolong the service life features. They are widely used in automobiles, motorcycles, airplanes, garden tools, yachts, industrial engines and many other fields. Automobile replacement spark plugs can save fuel consumption and improve automobile performance.
- SolutionTo solve common ignition system problems such as backfires, misfires, stalls, engine shakes, poor idling and regaining power, check engine light circuit failures and severe stalls. All spark plugs and coil packs undergo rigorous quality control testing for reliable operation under all operating conditions and peak engine performance across the entire engine speed range, providing better performance spark plugs and reliability.
- Customer ServiceSYKRSS attaches great importance to your shopping experience, if you encounter any issues with our spark plugs iridium, please contact us immediately, and we will respond to you within 48 hours. We are committed to providing 1 year quality guarantee service.We are a professional automotive component manufacturer with a mature industrial production line. Choose SYKRSS, choose high-quality products.
7. NGK (2115) BPR5EIX-11 Iridium IX Spark Plug, Pack of 1
- Fit Type: Vehicle Specific
8. NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- Compatible with Harley-Davidson Twin Cam and XL --- 4
- 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
9. NGK DCPR7EIX Spark Plug (2 Pack)
- Quality Assured
- High Quality
- World Wide Leader
- OEM/OES Manufacturer
10. E3 Spark Plugs E3.34 Powersports Spark Plug for Motorcycles, ATVs, Snowmobiles, and More, Patented
- FOR POWERSPORT ENGINES: Built for motorcycles, ATVs, snowmobiles, and other high-performance engines to increase power, improve fuel efficiency, and reduce emissions across a variety of riding conditions
- DIAMONDFIRE TECHNOLOGY: Patented ground electrode with two legs enhances heat transfer and durability, delivering optimized combustion to meet the intense demands of powersport applications
- MORE POWER AND FUEL EFFICIENCY: E3 Spark Plugs deliver up to 12% more power and up to 13% better fuel economy in small engines, and up mid-single digits on automotive applications, helping to enhance overall engine performance and reduce fuel consumption across a wide range of vehicles
- LOWER EMISSIONS: The more complete burn helps to reduce emissions, minimize carbon buildup, promote cleaner combustion, and support compliance with modern environmental and emissions standards
- VERSATILE FIT: Replaces Champion RN9YC, RN11YC, RN12YC and NGK BPR5ES, BPR6ES, BPR7ES, BR5ES; includes one E3.34 spark plug with 14mm thread diameter and 0.750-inch thread reach
Peter
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