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    Spark Plugs, M156 , M159


    Availability: In stock


    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.

    Key Features:

    • 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

    PDF Filem156spark_gap (190.2 KB)Download
    PDF Filem156spark (376.6 KB)Download


    This policy only applies to installers and/or users who are in the United States, customers who reside in other countries should act in accordance with their local laws and regulations.
    Some Weistec Engineering performance upgrades may solely be used on vehicles in sanctioned competition which may never be used upon a public road or highway, unless permitted by specific regulatory exemptions (such as a CARB E.O.). For state specific details please visit the following website.
    It is the responsibility of the installer and/or user of the product to ensure that it is used in compliance with all applicable laws and regulations. If a product was purchased in error, do not install and/or use it. The purchaser must arrange to return the product(s) for a full refund.
    All performance modifications and installations are at the customer’s own risk. Weistec Engineering holds no responsibility either implied or otherwise for mechanical, electrical or other failure when using any aftermarket performance products.


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