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    Spark Plug Set, M157 / M278


    Availability: In stock


    Spark Plug Set, M157 / M278

    Weistec M157 / M278 spark plugs are designed and manufactured for not only high power applications but also factory replacement. The factory plugs do not handle the M157’s high cylinder pressures very well and frequently result in misfire problems, even on unmodified vehicles.

    The M157 / M278 spark plugs are also 1 step colder to help prevent pre-ignition in engines that are making more power than stock allowing you to further push the envelope of your vehicle.

    Key Features:

    • Higher Output for High Boost Applications

    • Colder range for better performance with increased horsepower levels

    • Direct replacement / bolt in for M157 / M278 engines

    • Suitable for all M157 / M278 vehicles from stock to highly modified

    • Set of 8

    PDF Filem157spark_gap (191.8 KB)Download
    PDF Filem157spark_1 (374.2 KB)Download

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    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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