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Learning Center

Why Do Failed Oxygen Sensors Need to Be Replaced?

When functioning properly, oxygen sensors monitor the levels of unburned oxygen in exhaust, sending signals to a vehicle's PCM... Read More

Wasted Spark Ignition Systems

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

Spark Plug Anatomy

How do I choose the correct plug? Read More

What is a Spark Plugs Heat Range?

The term heat range refers to the speed with which a plug can transfer heat from the combustion chamber to the engine head... Read More

Bosch Spark Plug Metal Types

What are the various metal types used in Bosch spark plugs? Read More

What are Copper Core Spark Plugs?

Almost all spark plugs use a copper cored center electrode to conduct the electricity, jump the gap, and promote heat dissipation... Read More

Bosch Center Electrode Designs

Center electrodes come in a variety of shapes and sizes... Read More

Bosch Ground Electrode Designs

Ground electrodes come in a variety of shapes and sizes... Read More

What is a Resistor Spark Plug?

Resistor spark plugs prevent interference with electronic equipment... Read More

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