Contents
The Best Harley Davidson Spark Plugs of 2023 – Reviewed and Top Rated
2,375 Reviews Scanned
- 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
- 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
- 【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.
- 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
- 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
Last update on 2025-09-07 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
How Do You Buy The Best Harley Davidson Spark Plugs?
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We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Harley Davidson Spark Plugs that you consider buying. Your questions might include the following:
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Potential sources can include buying guides for Harley Davidson Spark Plugs, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Harley Davidson Spark Plugs. Make sure that you are only using trustworthy and credible websites and sources.
We provide an Harley Davidson Spark Plugs buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Harley Davidson Spark Plugs currently available on the market.
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- Features: What bells and whistles matter for an Harley Davidson Spark Plugs?
- Specifications: How powerful they are can be measured.
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- Customer Ratings: Number ratings grade Harley Davidson Spark Plugs objectively.
- Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Harley Davidson Spark Plugs.
- Product Quality: You don’t always get what you pay for with an Harley Davidson Spark Plugs, sometimes less, and sometimes more.
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FAQ:
Q: What kind of spark plugs do Harley Davidson use?
A: NGK Harley Spark Plugs To keep your Harley V-twin firing right, you gotta have the proper spark. NGK Harley-Davidson spark plugs are specially made with exact specifications and rigid quality control to be the perfect match for Harley engines, With NGK Harley spark plugs your bike delivers all the horsepower and torque it’s supposed to.
Q: Which is the best spark plug for a Harley Davidson Twin Cam 88?
A: 2. E3.36 – E3 Spark Plugs for Harley Davidson Twin Cam 88 In contrast to the NGK mentioned above, the E3 Spark Plug E3.36 is a spark plug that can punch well above its weight in a tuned or modified engine. Unlike the iridium plug of the NGK, the E3 uses a yttrium-enhanced alloy for its electrode surface.
Q: What happens if you use the wrong spark plug?
A: If you choose the wrong plug for the job, your spark plug can begin to function as a glow plug instead. This will combust fuel at the wrong moment, impacting performance or destroying your engine. In testing, the metallurgy of this plug has been shown to result in temperatures up to 8% cooler.