DENSO Iridium Spark Plug — Thread reach 19.1 mm, Thread size 14 mm, Spark gap 1.1 mm – 75-86 Big Twin, 79-98 Touring, 85-99 Softail, 91-00 Dyna, 82-94 FXR, 99-00 CVO, 84 Police
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Long-life iridium spark plug with fine-wire electrode for reliable ignition and reduced voltage requirements.