ELECTRICAL SECTION RED PART NUMBERS INDICATE NEW PARTS 1-113 1 2 3 4 5 6 7 8 9 10 11 CONTENTS ELECTRICAL FRAME FRONT END CONTROL WHEEL ENGINE DRIVE TRAIN FUEL EXHAUST GENERAL REFERENCE Spark Plugs Model & Year HD Code / Part # E3 Code Twin Cam 1999/2017, Sportster 1986/Later 6R12 18043 & Indian Chief Models 2012/Later E3.36 Shovelhead Models 1975/1984 5R6A 18044 Big Twin Evolution 1984/1999 E3.34 Milwaukee-Eight® Models 2017/Later 6R10 18045 E3.39 E3 SPARK PLUGS • Developed by researchers from leading engineering universities, E3’s patented Edge-to-Edge electrode design delivers maximum performance with increased efficiency. • More power. • Reduced emissions. • Improved fuel economy. • Longer engine life. • Sold each. Electrode Detail 18045 18044 18043 Now Available For IndianTM
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