The Best Spark Plugs For Harley 103 of 2023

Quality Assured

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

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

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

Fit type: Vehicle Specific

Platinum ground to ensure high performance

Maintains stable operating temperature under all engine loads

Greatest engine performance regardless of engine type or ignition system

Champion iridium spark plugs feature a fine wire iridium center electrode that is laser-locked to the center electrode

The fine-wire center electrode and platinum V-trimmed ground electrode produce the sharpest spark focus; This provides the greatest engine performance regardless of the engine type or ignition system

Exclusive heat-active alloy allows the electrodes to reach optimal temperature quickly and maintain stable operating temperature under all engine loads

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

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

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

● 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)

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

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