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,
Autolite 217.
308
NGK - BPR4EY AUTOLITE - 65
I have autolite sparks plugs ARF32M and need to know the cross reference to NGK
Is there a cross reference from a Generac Oil Filter P/N 0A45310244 to another brand?
696854
Onan - P/N 167-0272 Champion - P/N RS17YX Autolite - P/N 106
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
64 Autolite Replaces Champion RN11YC, NGK BPR5ES
Any auto parts store can cross reference this filter to another brand for you. Just ask.
Proofhouse.com has a store brand reference chart.