SPARK PLUGS

Product information

What is a Spark Plug & what does it do?

Spark Plug Types

What is a Surface Discharge Spark Plug?

Part Numbering System

Product information

Spark Plug Types

The following table gives an example of the characteristics and service life of resistor spark plugs when used in a modern unleaded engine:
 

Type*

Centre Electrode

Ground Electrode

Service Life **

Benefits

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Nickel Alloy 

Nickel

Nickel

20,000 - 40,000 kms

Standard style Spark Plug

Nickel Alloy 
(V-Groove)

Nickel

Nickel

20,000 - 40,000 kms

Improved ignitability due to sparking at periphery of the electrode

Iridium IX

Iridium tip

Nickel

60,000 kms

Long service life and even better ignitability due to a small diameter centre electrode

Laser Platinum

Platinum tip

Platinum pad/chip

100,000 kms

Extremely long service life. High ignitability due to fine tipped centre electrode

Laser Iridium 

Iridium tip

Platinum pad/chip

100,000 kms

Extremely long service life. Improved high ignitability due to fine tipped centre electrode

DFE Iridium
(Double Fine Electrode)

Iridium tip

Platinum tip

100,000 kms

Superior ignitability due to fine tip centre and ground electrodes. Excellent service life.

*NGK Spark Plugs are designed to OEM requirements and as such, a variant of each of the above styles may not be available as it may not be an OEM requirement.
**Please note that the service life is provided as a general guide and may vary due to vehicle driving conditions.