Champion STK 21 - Possible spark plugs for

Details about Champion STK 21:

  • Gap: 1 mm
  • Threaddiameter: M18x1.5
  • Threadreach: 11.7 mm
  • Hexsize: 21 mm
  • Terminaltype: SAE

Alternative spark plugs for Champion STK 21:

Brand Model
ACDelco 86TS
Autolite 37
Beck Arnley 176-5178
Bosch DR10BC
Bosch stk 7551
Champion RF14YC
Denso MA9P-U
Denso stk 5005
General Motors 5612149
Mopar 4339427
Motorcraft BSF42C
Motorcraft BSF82C
Motorcraft stk 20
Motorcraft stk 31
Napa X973
NGK WR5
NGK stk 2438
Valley Forge 18

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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.
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