NGK 5820 Spark Plug
NGK 5820 Spark Plug
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NGK

NGK 5820 Spark Plug

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Key item features

  • Ceramic Insulator: NGK's OE ceramic technology utilizes high-grade alumina silicate ceramic for a stronger insulator, optimizing dielectric performance.
  • Racing Design: Designed for racing, this spark plug features a conventional nickel alloy center electrode with a V-groove for consistent performance.
  • Durable Plating: Trivalent metal plating provides superior anti-corrosion and anti-seizing properties, facilitating easy installation and removal.
  • Copper Core: A solid copper core, 98% pure, ensures superior heat dissipation, conductivity, and ultra-wide heat ranges.
  • Thread Protection: Cold-rolled threads prevent cross-threading and potential damage to cylinder heads during installation.
  • Specialized Usage: Recommended for racing use only, it incorporates special configurations and designs for enhanced durability and ignitability.
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Current price is $10.98
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Arrives by Fri, Jul 31
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Sold and shipped by Sixity Auto
4.567262121764491 stars out of 5, based on 2743 seller reviews(4.6)
Free 30-day returns
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$10.47
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Shipping, arrives by Fri, Jul 31 to Columbus, 43215
Sold and shipped by PartsHawk
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3.9 out of 5 stars
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7 ratings6 reviews
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Showing 1-3 of 6 reviews

Mar 20, 2026
Jamie Dean
5 out of 5 stars review

Seller Verified Purchase

Plug temp range

I have been using ngk plugs for the first time in my racecar. I was experiencing plug foul and kept replacing the plugs to find the right heat range for short runs. Finally got the coldest plug and put them in and so far so good. Using ngk racing plugs in the range of coldest for a small block chevy and its working great no fuel out yet. Spent the day at the track testing and tuning and all is great now.

Review from jegs.com
Helpful?14B3EYIDWD0148699088
Sep 1, 2015
Dynomo
5 out of 5 stars review

Spark plug purchase

I bought these to replace autolite plugs that I've used for years after having two bad brand new sets and an inventory of them going in the trash...can't trust them since they moved there manufacturing to mexico

Review from jegs.com
Helpful?14B3EYIDWD0148699088
Sep 22, 2015
buttercutter
5 out of 5 stars review

Plugs are good

Bought these from Jegs found out that I could buy them local from O'Reilly's for about a dollar cheaper each. That's with a racer discount

Review from jegs.com
Helpful?14B3EYIDWD0148699088