Spark Plugs, M156 , M159
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.
- Higher Output for Supercharged applications
- Colder range for better compatibility in supercharged applications
- Direct replacement/bolt in for M156/M159
- Inexpensive way to gain power and efficiency
- Increased overall safety of engine parts
- Set of 8
* Important: Please be sure to check and set spark plug gap prior to installation.
This product can expose you to chemicals including carbon black, silica - crystalline, formaldehyde, and lead which are known to the State of California to cause cancer, and lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.