NGK 6421 - Alternative spark plugs
There are 27 replacement spark plugs for NGK 6421. The cross references are for general reference only, please check specifications for your application.
Specifications for NGK 6421
- Thread diameter
- 14.0 mm
- Thread reach
- 7.8 mm
- Hex size
- 16 mm
NGK 6421 replacement spark plugs
- ACDelco CS41T
- ACDelco CS42T
- Autolite 2954
- Autolite 2956 Buy from Amazon
- Autolite XST2956 Buy from Amazon
- Bosch 0241245539
- Bosch HR9LPX Buy from Amazon
- Bosch HS5E Buy from Amazon
- Bosch WAK225T3
- Brisk 3007
- Brisk 77316
- Brisk U15
- Carlton 71010
- Carlton CN6E
- Champion 5847(Ezstart)
- Champion DJ6J Buy from Amazon
- 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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Replacement spark plugs for NGK 6421 on Amazon
Replacement spark plugs for NGK 6421 on Ebay
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