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
Champion T04 COPPER PLUS RA8HC Spark Plug : Amazon.co.uk: Automotive
Champion Spark Plug - Harley 6R12
China Caterpillar Spark Plug 3016663 479-7702 G3500 4797702 1948518 Bosch 7306 - China Caterpillar Spark Plugs, Spark Plug
CHAMPION Spark Plug in the Small Engine Replacement Parts department at Lowes.com