Fasteners & Hardware

Head studs, bolt kits, nuts, washers, bushings and mounting hardware for engines, suspension and drivetrains.

Find durable fasteners—bolts, nuts, screws, washers—at Agile Auto Parts, built for performance and reliability.

Find the parts that fit your car or truck.

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    Choosing fasteners and hardware

    Fasteners hold the engine and chassis together, so the grade and the torque value matter. High-strength studs and bolts hold a joint tighter than stock hardware, which helps with high boost, high compression or heavy loads. Follow the maker instructions for torque, thread lubricant and tightening sequence.

    Match the thread size, length and grip to the job. Head studs, main studs and rod bolts are specific to the engine family, while bushings, spacers and general hardware come in sets or by size. Always replace one-time-use fasteners when the instructions call for it.

    Polyurethane bushings are firmer than rubber and give a more direct feel, which suits performance driving, although they can pass on more noise and vibration.

    Brands we carry in this category include ARP, PEM, Energy Suspension, Allstar Performance, Yukon Gear & Axle, Torque Solution and Prothane.

    Common questions

    Are head studs better than head bolts?

    Studs give a more even clamping load and are the usual upgrade on high-power or boosted engines. Many street engines are fine with new bolts. Our blog has a full comparison.

    How do I find the right kit?

    Check the size, thread, connector or mounting details in the product title and description against what you have, and look at the photos. If you are unsure, contact our support team and we will help you check before you order.

    What if the part does not fit?

    Returns are accepted within 60 days, unused and in the original packaging, and return shipping is free. See Shipping & Returns for the details.

    All Fasteners & Hardware products, page 7

    Every product in this category, page by page. To see only the parts that fit your vehicle, use the vehicle selector at the top of the page.

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