Champion STK 877 - Alternative spark plugs

Replacement spark plugs for Champion STK 877:

Brand Model
AC Delco M8
Champion Y82
Denso U20M-U
Denso stk 6003
General Motors 1559459
Napa X581
NGK stk 5812
Prestolite 09-10-06

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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.