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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.
Autolite 217.
308
Most all brand spark plug brands are on the cross reference including Champion. Some of the brands that cross reference to Champion are Autolite and Denso,
I have autolite sparks plugs ARF32M and need to know the cross reference to NGK
64 Autolite Replaces Champion RN11YC, NGK BPR5ES
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..
Onan - P/N 167-0272 Champion - P/N RS17YX Autolite - P/N 106
What is the cross reference of BPR5ES to Champion Champion RN11YC
You can use the following plugs for a cross reference for a Champion CJ8 Denso - W20M-U NGK - BM7A or BM6A (BM6A is a hotter plug than the BM7A) Bosch - WS9EC Autolite Part # 255
NGK - BP5ES Champion - N11YC Autolite - 64 Bosch - WR8DC Denco - W16EXU Torch _ F5TC