NGK Iridium Spark Plug - CPR8EAIX-9

The NGK CPR8EAIX-9 Iridium spark plug is engineered to provide optimal engine performance and reli...

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Spark Plug For Kawasaki KFX 450 R 08-14 NGK CPR8EAIX-9 Iridium Fine Wire

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Product Information

Full details

The NGK CPR8EAIX-9 Iridium spark plug is designed for motorcycle enthusiasts and riders looking to optimize engine ignition and combustion efficiency. By utilizing advanced iridium material, this plug provides a more reliable spark and improved throttle responsiveness, making it an excellent choice for daily commuters and performance riders alike; however, users should ensure compatibility with their specific engine heat range requirements before installation to avoid performance issues.

All features

Model Part Number	708.02.23
Brand	NGK

Extended Product Information

FAQs

Can I gap my NGK Iridium spark plug?

It is generally not recommended to gap iridium plugs, as the fine center electrode is extremely delicate and can be easily damaged.

How often should I replace these plugs?

Due to their iridium construction, these plugs typically last significantly longer than standard nickel or copper plugs; however, follow your manufacturer's recommended service intervals.

Does this spark plug require special anti-seize?

NGK plugs feature a metal shell plating that provides anti-seize properties; in most cases, additional anti-seize is not required and can lead to over-tightening.

How do I know if the CPR8EAIX-9 is compatible with my bike?

Check your motorcycle owner's manual for the recommended spark plug model or use the NGK parts finder tool to confirm fitment based on your bike's make, model, and year.

What does the '8' represent in the model number?

The '8' indicates the heat range of the spark plug, which refers to its ability to dissipate heat from the combustion chamber.

Troubleshooting

Engine fails to start after installation

Verify that the spark plug wire or ignition coil boot is fully seated and making a secure connection with the plug terminal.

Rough idling or engine hesitation

Check that the plug was installed to the correct torque specification and confirm the heat range is appropriate for your specific engine model.

Visible fouling on the plug

Check for underlying issues such as an overly rich fuel mixture, a clogged air filter, or an ignition timing problem that may be causing incomplete combustion.

Pros and Cons

Pros

Improved throttle response and acceleration
Superior ignitability for cleaner combustion
Exceptional durability and resistance to electrode erosion
Consistent engine performance across diverse conditions
Reduced frequency of maintenance cycles

Cons

Higher initial cost compared to standard copper plugs
Specific heat range requires matching to OEM specifications
Requires careful handling to avoid damaging the fine center electrode

Setup, Compatibility & Care

To install, ensure the engine is completely cool to avoid thermal stress on the cylinder head threads. Carefully thread the plug by hand until it is seated before using a spark plug wrench to tighten it to the torque specifications provided in your motorcycle's service manual. Always check your bike's manual to ensure the '8' heat range of the CPR8EAIX-9 matches your factory requirements. During maintenance, inspect the porcelain insulator for cracks and check the ground electrode for excessive carbon buildup. Do not attempt to adjust the gap of iridium plugs using a standard coin-style gap tool, as this can damage the brittle iridium tip.