Autolite® 4164 Copper Spark Plug for V-Twins - Replacement for OEM# 6R12 - Fits 1986-Up Sportster (XL) and 1999-2017 Twin Cam Harley Models and All 1988-2008 Buell Models - MADE IN USA - Billet Proof Designs
Spark Plug Set RA8HC 24 Pack For Harley Davidson Models - ChopperShop.com
Champion Spark Plugs 'Copper Plus' ra8hc for Harley Davidson Sportster Year | eBay