NGK 6821 - Alternative spark plugs
There are 28 replacement spark plugs for NGK 6821. The cross references are for general reference only, please check for correct specifications and measurements for your application. 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 Amazon Associates.
- Thread diameter: 10.0 mm
- Thread reach: 12.7 mm
- Hex size: 16 mm
Specifications for NGK 6821
NGK 6821 on Amazon
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Replacement spark plugs for NGK 6821 on Amazon
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Applications of NGK 6821
| Brand | Model | Engine size | HP | KW | Year | Engine | # of cyl | Spark plug gap |
|---|---|---|---|---|---|---|---|---|
| KAWASAKI | Ninja 250 R | 250 | 2008 - 2010 | 2 | 0.5 | |||
| MOTO GUZZI | 125 2C4T | 125 | 1979 - 1983 | 1 | 0.5 | |||
| MOTO GUZZI | 254 | 250 | 1978 - 1980 | 4 | 0.5 | |||
| MOTO GUZZI | V 35 Imola II | 350 | 1979 - 1986 | 2 | 0.5 | |||
| MOTO GUZZI | V 50 Monza II | 500 | 1984 - 1987 | 2 | 0.5 | |||
| MOTO GUZZI | V 65 Lario | 650 | - 1986 | 2 | 0.5 | |||
| MOTO GUZZI | V 75, Duna | 750 | 2 | 0.5 |
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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.