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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 Some Spark Plugs Have Two Part Numbers?

Why do some spark plug brands have two sets of numbers? Read More

How Long Will Iridium Spark Plugs Last?

Longevity varies on iridium plugs, dependant on the plugs features and application... Read More

What are the Different Champion Resistor Types?

What is the difference between Champion "Q", "R" and "X" resistor types? Read More

How Do I Find a Colder or Hotter Plug?

Each manufacturer has assigned a unique heat range to each plug. How can you find a plug in a hotter or colder heat range?... 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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