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10 Best Spark Plugs For Harley 103 in 2022 – [Top Picks]

Finding the best spark plugs for harley 103 is not an easy task. There are hundreds of similar products on the market which can be overwhelming to you.

To help you out, we have researched hundreds of customer reviews and feedback from all around the web and come up with the top 10 spark plugs for harley 103 you can buy today. So without further ado, let’s get into the list.

Top 10 Best Spark Plugs For Harley 103 – Picked by Experts

10 Best Spark Plugs For Harley 103 – Top Picks of 2022

Product 1
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
Product 2
Harley Electra Glide Classic 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
  • Harley Electra Glide Classic
Product 3
Accel 2418 Spark Plugs (Pair) 6R12 for Harley Davidson Twin Cam
  • Accel High Performance spark plugs for Harley-Davidson
  • Suitable for all Harley Davidson Twin Cam 1450/1550cc models from 1999 up
  • Spark plugs produce a larger spark for more power at high RPMs. Improves throttle response and fuel economy with less fouling
  • Accel number 2418, replaces OEM part 6R12
  • Sold in pairs
On SaleProduct 4
Harley-Davidson FXD/FLD Dyna Series (12-17) Clymer Repair Manual
  • Product code: LR-702.52.28
  • Editors of Clymer Manuals (Author)
  • English (Publication Language)
  • 544 Pages - 05/01/2018 (Publication Date) - Haynes Manuals N. America, Inc. (Publisher)
Product 5
NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)
  • Come pre-gapped
  • The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode
  • Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
  • The ultimate in spark plug technology and performance from the industry leader
  • New metal shell plating has enhanced anti corrosion qualities
Product 7
Harley Sportster Roadster XL 1200R Iridium Performance Spark Plugs Pair repl. OEM# 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
Product 8
Aokus 10.4mm 10mm Spark Plug Wire Compatible with Harley Davidson Big Twin 99-19 FXD Dyna Softail (Blue)
  • ● Replace for Manufacturer Part Number: DYNA-409BL
  • ● Fits for virtually like factory location on cylinder Harley-Davidson or Big-Twin that has the coil mounted on the seat post.10.4mm high performance ignition wires available for street or race applications
  • ●Perfect Fitment, directly replacement. Made of high quality material, reliable quality and durable.
  • ●Great for replacement wire, relocation kits, new look, bobbers, scramblers, cafe racer etc
  • ●Package includes: 2 * blue Spark Plug Wires (one 8" and one 20" long wires pre-crimped)
Product 9
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
Product 10
E3 Spark Plugs E3.36 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) E3.36 spark plug with a 90-day warranty. Features 12mm thread diameter; 0.750-inch thread reach plug with gasket seat; 5/8-inch hex size
  • REPLACES: Champion RA6HC and RA8HC; NGK DPR7EA9, DPR8EA9, DR7EA, DR8EIX, and DR8ES. Often used for V-Twin motorcycle engines, late-model Harley Davidson

Best Spark Plugs For Harley 103 Buying Guide

It’s important to have the proper knowledge, and advice before spending your money on spark plugs for harley 103. That’s exactly what this guide is for. We’ve explained all the important aspects to look for and compiled all our findings into a comprehensive list, so you can easily access the information that you need.

  • Quality of the product: Quality is something that you should always be concerned about when purchasing the spark plugs for harley 103. These days you can find so many products that are of bad quality that it is extremely difficult to tell the good ones from the bad ones. So make sure the quality is good enough.
  • Features of the product: Product features tell you if it will suit your needs and help you to make the right choice. However, features are not all the criteria for choosing a product. You also need to make sure that the spark plugs for harley 103 works as described.
  • Price of the product: Price is another essential factor you should consider when you are shopping for spark plugs for harley 103. Think about how much you need the product and compare it to the price you are willing to pay. Try to choose the item that you can afford and avoid paying overpriced products.
  • Existing customer reviews: When buying new spark plugs for harley 103, you should always look for customer reviews. Because customer reviews tell you what other customers think about the product, they help you avoid making costly mistakes.
  • Online marketplace: What marketplace you’re buying the spark plugs for harley 103 from is going to make a difference. If you’re buying it off Amazon, make sure the seller has a good reputation with a comparatively lower Best Seller Rank (BSR) in the category where the product is listed. Please don’t buy it off a random person that only has a few reviews.

Final Words

So now you have all the information on the best spark plugs for harley 103, and it’s your turn to pick the suitable spark plugs for harley 103 for yourself. You can choose from our list without any hesitation. And don’t forget, you can’t go wrong with our recommendation.