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DK Hardware Professional Tax Exempt? Net 30? - DK Net Terms
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30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.
Hex Size
7/8"
Thread Size
0.709"
Nomenclature
D-21 TRACTOR SPARKPLUG
Electrode
Nickel Copper Alloy
Fill Gap Size
0.023 to 0.028"
Suitable for: Lawn and Garden
Patented high voltage semi-conductor resistor for maximum EMI suppression. Copper core center electrode reduces engine misfire caused by fouling. Triple seal assembly with upper and lower metal gaskets and sillment seal, eliminates spark plug failure due to heat or mechanically induced stress. Triple-coated shell, Tintac and Ultraseal over zinc plating resist corrosion and spark plug seizure.