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Est. 1957
NGK

NGK Racing Spark Plug Box of 4 (R7420-9)

Box of 4

Sold as a complete box

Per Unit

$48.99

Box of 4 Total

$195.96

$195.96

for box of 4
Only 3 left in stock

NGK Racing Spark Plug Box of 4 (R7420-9). Built for extreme racing conditions.

Key Features

  • Designed for extreme and grueling racing conditions.
  • Trivalent metal plating offers superior anti-corrosion and anti-seizing properties.
  • Pure alumina silicate ceramic insulator provides strength and better heat transfer.
  • Special insulator nose configurations help improve throttle response.
  • Corrugated ribs on the insulator prevent flashover.
  • Copper core aids in heat removal from the combustion chamber.
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About this part

Product Details

When you're pushing your engine to its limits on the track, the right spark plug makes all the difference. These NGK Racing spark plugs are built specifically for those grueling racing conditions where reliability and consistent ignition are critical. They're designed to handle the intense heat and pressure found in high-performance racing applications.

The center electrode on these plugs features special designs to ensure they hold up over time and provide strong spark. You'll find NGK plugs used by champions across many racing venues because they offer ultra-high performance across a range of heat levels. The trivalent metal plating helps prevent corrosion and seizing, making installation and removal easier, which is always a plus when you're working on a race car.

These plugs are a solid option if you're building or maintaining a vehicle for racing. They come in a box of four, ready to get your engine firing on all cylinders when it counts.

Specifications

Brand
NGK
Manufacturer Part #
6448
UPC
87295164488

Frequently Asked Questions

NGK Racing Spark Plug Box of 4 (R7420-9)

$195.96