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    Camshaft Cap Bolts, M156


    Availability: In stock


    Camshaft Cap Bolts, M156

    Weistec’s M156/M159 Camshaft Cap Bolts are a direct OEM replacement utilizing ARP hardware. The Bolt Set benefits from a significant increase in material strength over OEM. This allows for increased clamping forces on the M156 engine’s cam caps, inevitably putting an end to stress on your engine’s valvetrain. Unlike OEM units which stretch and warp, this bolt set can be effectively re-used time and time again when removing or replacing camshafts.

    Whether you are installing Weistec CNC Ported Heads, assembling a completely built engine or simply upgrading to SLS Valve Buckets, this bolt set is a must!

    Key Features:

    • 170,000 psi Tensile Strength

    • 140,000 psi Yield Strength

    • Direct OEM Replacement

    • Increased Clamping Force on Camshaft Caps

    • Reusable, unlike the factory bolts which are "one time use"

    PDF Filem156_arp_cam_cap (397 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.


    WARNING: Cancer and Reproductive Harm