For those who will be making over 630bhp these uniquely designed spark plugs are a must have. The extended electrode tip of the OEM spark plug will be prone to pre-ignition at higher power and boost levels. Upgraded spark plugs are a must have with our Stage 2 and 3 Supercharger packages.
KEY FEATURES:
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Higher Output for Supercharged applications
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Colder range for better compatibility in supercharged applications
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Direct replacement/bolt in for M156/M159
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Inexpensive way to gain power and efficiency
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Increased overall safety of engine parts
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Set of 8
* Important: Please be sure to check and set spark plug gap prior to installation.
