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Main Cap Side Bolt Kit for Late Aluminum Block (06-10 GT)

Market Price $78.59 You Save 12% ($9.04)
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  • Item 18255

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    Features & Details

    • Upgraded Hardware
    • 12 Point Head Design
    • Made from 8740 Chromoly Steel
    • Black Oxide Finish
    • Rated at 200,000 psi
    • Made in the USA
    • Includes Side Bolts Only
    • Fits Late 2006-2010 4.6L Aluminum M9 Production Blocks
    Performance Upgrade. Securely install your Mustangs main caps by replacing that old weak factory hardware with high strength ARP Fasteners. ARP Fasteners are ideal for high performance street and track Mustangs.

    Premium Quality. Made in the USA from 8740 chromoly steel with a black oxide finish to resist corrosion, these ARP High-Performance Series Main Cap Side Bolts are hardened to a tensile strength of 200,000 psi to provide superior strength for long-lasting performance. They feature a wide-area flange to provide even load distribution during torquing.

    Application. This ARP Main Cap Side Bolt Kit is designed for use on late aluminum M9 production engine blocks found in 2006-2010 4.6L Mustangs. Includes Side bolts only.

    Fitment: 2006 2007 2008 2009 2010 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (10) Bolts
    Installation Info
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (2)

        2 Top Rated Questions

        Will these bolts work on a 2011 gt

        • These will not work on a 2011 GT Mustang as these are for the 4.6L engine. The 2011 GT Mustangs have the 5.0L engine which is a completely different size.

        Helpful (0)

        Is this best for 'light' power adder solutions ? I've heard that the stock cylinder head screws can get stretched when supercharged. Would this assist with strengthening the heads for low boost or lower HP power adder solutions ?150 HP or less for example?)

        • These bolts would be a good addition for low boost applications.

        Helpful (0)
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          Customer Reviews (2) Write a Review

          Overall Rating 5

          out of 5 stars

          • 5/5

            September 07, 2017

            Fit great

            These fit perfectly for my mid 01 cobra. The 156-5001 arp bolts were too small and these were just what I need since my block is a later aluminum block. If you have a mid 01 cobra after 06-01-01 these should work for you.


            Year: 2001 Submodel: Cobra

            Helpful (8)

          • 5/5

            March 14, 2016

            always high quality.

            I've never had a problem with arp hardware. I've used this side bolt kit and the main bearing caps showed no signs of cap walk when I disassembled the engine for more upgrades. Plus they are reusable!!


            Year: 2002 Submodel: GT

            Helpful (9)

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