NGK stk 6821 - Alternative spark plugs
There are 15 replacement spark plugs for NGK stk 6821. The cross references are for general reference only, please check specifications for your application.
Compatible plug on Amazon
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Specifications for NGK stk 6821
- Thread diameter
- 10.0 mm
- Thread reach
- 12.7 mm
- Hex size
- 16 mm
NGK stk 6821 replacement spark plugs
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When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network and Amazon Associates.
Replacement spark plugs for NGK stk 6821 on Amazon
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