champion #940
Champion
Rc12yc
rj19lm
cross reference ngk BP4HS
It crosses to a champion stock number 405.
Champion RDZ19H
.023"
NGK BP7ES, Bosch W7DC, Champion N9YC
spark plug is good but when its plug in to coil on spark
64 Autolite Replaces Champion RN11YC, NGK BPR5ES
.025 inch per the manual.