NGK 6421 - Possible spark plugs for

Details about NGK 6421:

  • Threaddiameter: 14.0 mm
  • Threadreach: 7.8 mm
  • Hexsize: 16 mm

Alternative spark plugs for NGK 6421:

Brand Model
ACDelco CS41T
ACDelco CS42T
Autolite 2954
Autolite 2956
Autolite XST2956
Bosch 0241245539
Bosch HR9LPX
Bosch HS5E
Bosch WAK225T3
Brisk 3007
Brisk U15
Carlton 71010
Carlton CN6E
Champion 5847(Ezstart)
Champion DJ6J
Champion DJ6JT04
Champion RDJ6J
Denso 6041
Denso T22M-U
Denso T22MU
Denso WA22M
Denso WA22M-U
Denso WA22MU
Eyquem 755CJT
Motorcraft AF3NX
Prestolite 14F3N

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SPARK PLUG CONVERTER

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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