parameter of AIX-LFR6,iridium,thread 14mm,reach 26.5mm (1.04"),hex size 16mm (5/8") , heat range 6, gap 0.8mm (0.32").
Match with NGK ,LFR6A,LFR6AIX
Match with DENSO,K20HR-U,IKH20
application chart for automobile,
