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Learning Center

What Plugs Should I Use with Marine CDI?

Do not use a standard resistor type plug on an outboard marine motor with CDI... Read More

Wasted Spark Ignition Systems

Does a wasted spark ignition system require special spark plugs? Read More

Why Do NGK Plugs Have Two Numbers?

Many spark plug brands, including NGK, have two different ID numbers assigned to spark plugs... Read More

How Do I Find a Colder or Hotter Plug?

Each spark plug has a unique heat range. How can you find a plug that is a hotter or colder heat range?... Read More

How Long Will NGK Iridium Plugs Last?

NGK IX Iridium plugs are given a life expectancy of 40-50k miles, while their OEM Laser Iridium plugs typically last 80-100k miles... Read More

How Can I Find a High Performance Equivalent to My Regular Plug?

The best way to find a high performance equivalent is by using the application search... Read More

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