NGK Racing Spark Plug Box of 4 (R2349-10)

If you're building a high-performance engine for the track, you need spark plugs that can handle the heat and pressure of racing. These NGK Racing spark plugs are made specifically for those demanding conditions, designed to keep your engine firing reliably when it matters most. They're a popular choice among racers because they've proven themselves in competition.

The center electrode on these plugs has a special design to ensure it holds up under extreme use and provides a strong spark. NGK uses a pure alumina silicate ceramic insulator, which is strong and transfers heat well, helping to keep the plug at the right temperature. The special insulator nose shape can also help improve throttle response, giving you a more immediate reaction when you hit the gas. Plus, the trivalent metal plating on the outside helps prevent corrosion and seizing, making them easier to install and remove later.

This set comes with four plugs, which is what most 4-cylinder engines need. The copper core inside helps dissipate heat, and the triple seals are there to prevent any leaks.