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Precise Ignition for Petrol Engines

NGK spark plugs have been igniting since the 1930s. But sparks don’t just simply ignite. It takes a high amount of precision to create spark plugs that perform well and are extremely resistant in doing so.

No. 1 worldwide in Automotive Original Equipment


> 1,600 part numbers available for European markets

89% coverage of vehicles in operation in Europe (source: TecDoc)

Extensive range for power sports and power tools

NGK spark plugs Technologies

Almost every petrol engine on the market can use NGK spark plugs

From passenger cars and bikes to Formula 1 and motorcycle racing. Niterra has in over 60 years established itself as a heavily relied upon original equipment manufacturer (OEM). Because of its clear commitment to delivering the highest quality and continuously raising the bar, Niterras are the first choice for an array of vehicle manufacturers.

In order to meet growing expectations, Niterra regularly invests in research, technology and development. As a result, the company produces over 1,000 different types of spark plugs for almost every type of engine This includes automotive engines, as well as motorcycles, marine, power sport and many other applications. To sum up, the Niterras range offers the right product for nearly every demand!

  • Unique design to guarantee the best possible performance

  • Wide range of different heat ratings for high thermal endurance

  • High-performance spark plugs for the newest engine technologies

Spark Plug Requirements

As the main source of power in any petrol engine, a spark plug performs an essential function: It is responsible for igniting the air-fuel mixture in the combustion chamber of petrol engines. This combustion process creates power, which sets the vehicle in motion. To make sure this process runs smoothly, the spark delivered by the spark plug must ignite just before the piston reaches its highest point and the compression is at its greatest.


Types of Spark Plugs

Iridium Spark Plugs
Platinum Spark Plugs
Spark Plugs with Multiple Ground Electrodes
Spark Plugs with V-Groove in the Centre Electrode
Spark Plugs with Supplementary Spark Gap
Semi-surface Ignition Type Spark Plugs
Hybrid Spark Plugs
Racing Spark Plugs
LPG/CNG Spark Plugs




Electrode wear of spark plugs and the difference between single spark and wasted (double) spark systems

Blog: Most common questions about spark plugs

Everything you need to know about the precious ignition part

Frequently Asked Questions - Spark Plugs

What does a spark plug do?
What are the symptoms of bad spark plugs?
Why do spark plugs fail?
What metal is used in spark plugs?
How often do you need to change spark plugs?
Is spark plug torque necessary?
What causes carbon fouling on spark plugs?
When should you use colder spark plugs? Do hotter spark plugs make a difference?
Are all spark plugs the same?