E3 Spark Plug Twin Cam Sportster Evolution Replaces HD 6R12 MFG#E3.36

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E3 SPARK PLUGSWEIGHT: 0.12 DEVELOPED BY RESEARCHERS FROM LEADING ENGINEERING UNIVERSITIES , E3'S PATENTED EDGE-TO-EDGE ELECTRODE DESIGN DELIVERS MAXIMUM PERFORMANCE WITH INCREASED EFFICIENCY MORE POWER AND REDUCED EMISSIONS IMPROVED FUEL ECONOMY AND LONGER ENGINE LIFE SOLD EACH E3 SPARK PLUGSFITS TWIN CAM 1999/LATER & SPORTSTER 1986/LATERREPLACES HD# 6R12BY: E3 SPARK PLUGS Show more