I have autolite sparks plugs ARF32M and need to know the cross reference to NGK
NGK BKR5E
I"ve been trying to find an answer to this question myself and belive the Autolite 3924 corresponds to the Champion RC12YC.24-7423 - Champion RC12YC Spark PlugRC12YC Champion Replaces Autolite 3924, NGK BCPR6ES..
a ngk cr7hsa spark plug
i use ngk cr7hsa in my 79 xr 80, its a pritty standed plug a Honda shop should have it
it depends on the make but i buy cr8hsa plugs. they are made but the company ngk. in the manual it says you shuld buy the ngk plugs. cr6hsa-cold weather cr7hsa-regular weather (factory plug) cr8hsa-highest you can buy, it is for maximum performance and hot weather