Weistec M177 / M176 / M178 Spark Plug Set

Weistec Engineering spark plug set for Mercedes-AMG M177, M176, and M178 engine families. These NGK plugs are intended for both factory-replacement and high-performance applications where elevated cylinder pressure can cause misfires with the original plugs. One heat range colder than stock Helps reduce the risk of pre-ignition in modified engines Suitable for stock and high-power applications Designed for M176, M177, M177 LS2, and M178 engine families Complete engine set Fitment: Confirm engine code and vehicle application before ordering.