Champion 5843 - Alternative spark plugs

Replacement spark plugs for Champion 5843:

Brand Model
Autolite 255
Autolite XST255
Autolite XST2974
Autolite XST2976
NGK stk 6521

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The Spark Plug Cross references are for general reference only. Check for correct application and spec/measurements. Any use of this cross reference is done at the installers risk.