86-20 Sportster, (except 08-10 XR1200, 10-12 XR1200X), 99-17 Dyna, 00-17 Softail, 99-16 Touring, 97-02 M2, 97-98 S1, 97-99 S3, 09-16 Trike
Hersteller: NGK, Harkotstr. 41, 40880 Ratingen, Germany, http://www.ngk.de