cross reference ngk BP4HS
champion #940
Champion
64 Autolite Replaces Champion RN11YC, NGK BPR5ES
rj19lm
cj6y and cj7y are identical
NGK plug BP4HS - Gap for PW 50 is 0.6mm.
It crosses to a champion stock number 405.
NGK BP7ES, Bosch W7DC, Champion N9YC
Champion Spark Plug Co. is currently owned by Federal-Mogul.
Champion RA8HC has the same thread, seat, reach, hex size, and terminal type. I ordered a Kohler plug from Amazon and they actually shipped me this Champion Plug.
This plug is the Champion RCJ7Y.
Champion RCJ6Y