NGK 3621 - Alternative spark plugs
There are 3 replacement spark plugs for NGK 3621. The cross references are for general reference only, please check specifications for your application.
Specifications for NGK 3621
- Thread diameter
- 14.0 mm
- Hex size
- 20.8 mm
NGK 3621 replacement spark plugs
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Possible alternatives for NGK 3621 on Amazon
No direct match found on Amazon. These spark plugs are matched through cross-referenced plugs, please verify fitment before buying.
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