Best Spark Plugs for Harley Davidson 103

Accessories, Spark Plugs

While there are many brands of spark plugs, there are certain qualities that make them the best choice for a Harley Davidson motorcycle. This article will discuss Champion RA8WHP (9701) Iridium Spark Plugs, NGK Iridium IX DCPR7EIX, E3 spark plugs, and ACCEL spark plug wires. After reading the article, you should be able to choose the right spark plug for your bike.


NGK Iridium IX DCCR7EIX spark plugs for Harley-Davidson motorcycles are a great choice for your bike’s ignition system. These high-performance plugs feature fine-wire iridium in the center electrode and a platinum-coated ground electrode. They are great replacement spark plugs for your bike’s ignition system, but you should make sure to check the gap size before installing.

NGK Iridium IX DCCR7EIX spark plugs are a great choice for your bike’s ignition system because they offer consistent performance and reduced electrical quenching. These high-quality plugs also last longer than cheaper brands. The lifespan of these spark plugs can vary from 3 to 4,000 hours, and this largely depends on the quality of the gas used in your motorcycle.

This spark plug for your Harley-Davidson motorcycle features an yttrium-enhanced alloy for reduced side-wire temperature and a 5/8″ hex thread. In addition, these plugs feature a tapered ground electrode and insulator nose for improved spark gap. They are ideal for motorcycles that were produced between 1999 and 2016 and are compatible with a variety of Harley-Davidson models.

NGK Iridium IX DCCR7EIX spark plugs are one of the highest quality available. NGK Iridium spark plugs are designed to reduce carbon emissions and improve engine performance. They can be found in four-packs, ensuring you get the perfect fit for your motorcycle’s engine. They are also known for having long-lasting performance and are much less likely to misfire than regular spark plugs.

NGK Iridium IX DCCR7EIX spark plugs for Harley-Davidson 103 motorcycles come with an iridium-IX tip. This iridium tip is laser welded to the plug, which enhances its resistance to heat. This plug is also a great choice for Harley owners who want to improve the performance of their bikes.

Denso is an excellent generic brand for Harley-Davidson 103 motorcycles. The iridium electrodes on the NGK spark plugs are more resistant to heat and ensure better performance at high RPMs. Denso also makes iridium electrodes, which increase cold-starting, acceleration, and fuel ignition. The iridium electrodes improve fuel combustion and burn carbon deposits, making for a consistent spark.

Champion RA8WHP (9701) Iridium Spark Plug

The Champion RA8WHP (9701)Iridium Spark Plug for Harley Davidson (2003) is a good replacement spark plug for this model of motorcycle. It is made of iridium center electrode and platinum ground electrode. It has good user reviews and is relatively cheap. In case you’re wondering if it will fit your bike, here’s what to look for.

Before replacing your spark plugs, it’s important to check your motorcycle’s owner’s manual. You can find information about the recommended material for your bike in the manual. If you’re unsure, try speaking with your mechanic or browsing through a Harley user forum. Make sure you know what gapping your spark plugs should be at. The gap between the center electrode and the ground electrode should be less than two-thirds of the spark plug diameter.

The gap between the electrodes of your spark plug determines how efficiently the plug burns fuel. A wider gap will increase the risk of misfires and rough running. A plug with a wider gap will cause your engine to run poorly or even not start at all. The electrodes in a spark plug should be the recommended gap for your engine. If they are too large, you will need to replace them. The best option is to get one made of iridium, not platinum.

The Champion RA8WHP (9701)Iridium Spark Plug for Harley Davidson 104 comes with a warranty and a lifetime replacement policy. This replacement spark plug is suitable for Harley Davidson motorcycles with electronic ignition systems. While the Harley Davidson Motor Company strongly recommends the original equipment spark plugs, it is important to buy a replacement spark plug for your bike.

E3 spark plugs

If you’re looking for the best replacement spark plug for your 103 Harley, you’ve come to the right place. This ignition system device comes as a set of OEM plugs with pre-threaded and gapped threads. Each plug features a laser-welded iridium tip, which is known to last over 60,000 miles. This will improve the performance of your 103’s ignition system while increasing its lifespan.

Harley Davidson spark plugs are universal fit and come with a 0.6mm laser-welded tip. They’re great for cruising around town, but aren’t ideal for racing. They’re designed to work well in low temperatures and cold starts, but can handle the heat just as well. They’re also extremely durable, so you can feel safe knowing you’re getting quality replacement parts.

The thread diameter of E3 spark plugs is 12 mm, and the Hex size is 5/8″. You can install these plugs in your motorcycle without the hassle of gapping. These plugs are easy to install and are available in a wide variety of colors and designs. They’re also compatible with Harley Davidson motorcycles that were produced between 1999 and 2016. They have been designed with advanced technology to deliver an additional three horsepower in your engine.

The iridium electrode of the E3 spark plug is 25% smaller than the electrode made of other materials. Because of the smaller size, the electrode has a lower voltage requirement, making it easier to spark the engine and improve ignition system longevity. The plugs come in pairs. The iridium electrodes are available as one or two pieces. The combination of these two components increases performance and prolongs the life of your motorcycle.

Another option for your Harley Davidson 103 engine is the new E3 plugs. These spark plugs use plasma-assisted combustion technology. The company claims that these plugs increase horsepower and fuel efficiency, while also reducing emissions. If you’re looking for the best replacement spark plug, be sure to check out these two options. It might be worth it to invest in the new spark plug for your 103.

ACCEL spark plug wires

If you’re planning to replace the spark plug wires on your bike, you need to make sure that the type you choose matches the model. You also need to make sure that you purchase wires that transfer the maximum amount of voltage to the spark plugs. ACCEL spark plug wires are made from thick, durable wires and feature rust-free terminals. If you’re thinking of upgrading to a new motorcycle, this is a great way to maintain your bike’s performance and protect your investment.

ACCEL is a trusted brand that manufactures high-quality motorcycle accessories. Their spark plug wires for Harley Davidson are heavy-duty and affordable. The brand also makes Ton’s Performance spark plug wires, which are made with advanced technology. You can find them in eight or twenty-foot-long wires, and they’re compatible with many different motorcycle models. ACCEL spark plug wires for Harley Davidson models are compatible with vehicles with seat post coils, so you can’t go wrong with either of these.

ACCEL spark plug wires for Harley-Davidson motorcycles feature a thick insulator that protects the inner conductive metal. This insulator increases current flow capacity by as much as 300%. And the corrosion-free terminals ensure maximum spark to the spark plug. JPCycles also carries a long list of fitments for their spark plug wires. There’s a lot to consider when choosing a new spark plug wire for your motorcycle.

The premium ACCEL ignition wires have eight-millimeter silicone jackets for maximum protection. Their core is composed of fiberglass and Aramid for extra resistance against heat, oil, and moisture. The premium ignition wires are pre-cut to fit your bike’s Twin Cam 88 engine. They’re also longer than standard ignition wires. They measure eight inches long and 20 inches long.

While buying an ignition wire, consider the length. Generally, spark plug wires are made of copper and feature high resistance. However, some of them are made of low resistance and are not suitable for Harley-Davidson motorcycles. If you’re planning on replacing the spark plug wire on your Harley-Davidson motorcycle, make sure that you buy the correct size. Make sure you choose ACCEL spark plug wires for Harley-Davidson motorcycles.

Bestseller No. 2
V-Twin Performance Spark Plugs Replaces Harley spark plug #6R12.
  • V-Twin perfomance spark plugs features a copper core electrode for a longer service life, nickel plated housing, 95% pure alumina insulator and a heat crimping process to ensure a leak free seal.
  • Fits: FLT 1999-2016, FXST 1999-UP
  • FLST 1999-UP, FXD 1999-2017
  • XL 1986-UP
  • Color of plug may vary
Bestseller No. 3
NGK Iridium Sparkplug DCPR7EIX For HARLEY-DAVIDSON® Electra-Glide Ultra Classic FLHT/C/U/I® 1999-2016
  • Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.
  • Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer
  • NGK is the world's largest supplier of OEM spark plugs
  • Research Applications Prior to Purchase To Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed.
  • This Listing is for 1 Spark Plug
SaleBestseller No. 4
Tavaski 10.4mm 10mm Spark Plug Wire Kit Fit for Harley Davidson Big Twin 1999-2019 FXD Dyna Softail, Replace DYNA-409RD - Red Silicone
  • Fitment- The spark plug wire kit fit for Harley-Davidson Dyna and fit for Harley-Davidson Softail.Fits for virtually like factory location on cylinder Harley-Davidson or Big-Twin that has the coil mounted on the seat post. Warm Tips:Please check the description for the specific model.
  • Perfect Fit - The spark plug wire kit is great for replacement wire, relocation kits, new look, bobbers, scramblers, cafe racer etc. Replace number is DYNA-409RD.
  • Function - Timely replacement of the damaged spark plug wire can prolong the service life of the engine and reduce fuel waste.10.4mm high performance ignition wires available for street or race applications.
  • High Quality Material - The spark plug wire kit made of high-quality materials, wear-resistant, high reliability, long use time, and stable performance.reliable quality and durable.
  • You will Get: 2 * Red Spark Plug Wires (one 8" and one 20" long wires pre-crimped).
Bestseller No. 5
BDFHYK Set of 4 Iridium Spark Plug Compatible with 1988-2016 Harley-Davidson Sportster 1200, 1986-2016 Harley-DavidsonSportster 883 Engine Replacement for DCPR7EIX 6046 9701 97637
  • 【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. Fuller combustion efficiency, effectively reducing pollution emissions. Longer service life, generally more than twice that of a nickel alloy. The economic service life of 30000-40000 km.
  • 【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 9701 97637.
  • 【Buy with Confidence】: Exquisite craft,100% new and high quality auto parts,OE level durability.

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