18-24 Softail, 17-24 Touring, 15-20 Street, 17-24 Trike
Manufacturer: Champion, Corso Inghilterra 2, 12084 Mondovi' Cn, Italy, http://www.federalmogul.com
Spark Plugs including a wider-base insulator which provides an easier path to speed the transfer of heat and a longer insulator nose containing a center electrode of pure copper inside of chrome-nickel to transfer heat between firings and help resist fouling.