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Gaskets and Gasket Kits

When installing new parts or servicing an engine, reliable gaskets, seals, and o-rings can be one of the most important elements on any job. Gaskets which seal and perform reliably are essential; no one wants to suffer avoidable leaks and performance loss. Zipper’s Performance Products sells gaskets and gasket kits from notable manufacturers like Cometic®, James®, and S&S® for all Haley-Davidson® engine types. Zipper’s Performance stocks most all gaskets, seals, and o-rings individually for 1966-up Big Twins and 1957-up Sportster® engines. (Individual parts are available by phone or email only.)
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  1. Be the first to review this product

    As low as: $42.49

    Choose a full top end gasket kit if you’re doing headwork along with your cam installation or a cam-change-only kit for bolt-in cam installations that don’t require head removal (includes cam, tappet, rocker lid gaskets and pushrod o-rings). Quality gaskets from James® Gaskets.
  2. Be the first to review this product

    As low as: $23.25

    AFM (Aluminum Foamet Material) Gaskets have a chemically blown, compounded nitrile synthetic foam-like rubber bonded to an aluminum core. AFM material does not require gasket sealers or silicone bead.
  3. Be the first to review this product

    As low as: $23.25

    AFM (Aluminum Foamet Material) Gaskets have a chemically blown, compounded nitrile synthetic foam-like rubber bonded to an aluminum core. AFM material does not require gasket sealers or silicone bead.
  4. Be the first to review this product

    As low as: $23.95

    We stock these copper base gaskets in 4 different thicknesses, allowing the builder to adjust cylinder deck height for precise piston-to-head squish area. Simplifies set-up when building performance engines.
  5. Be the first to review this product

    As low as: $20.49

    Cometic® "SLS" (Single Layer Steel) .020" base gaskets are made from spring steel for durability, with a .001" thick layer of viton rubber on both sides for improved leak resistance. Sold in pairs.
  6. Be the first to review this product

    As low as: $22.95

    Specialty head gaskets made of copper from Cometic®. Available for Evolution and Shovelhead applications.
  7. Be the first to review this product

    As low as: $44.95

    Cometic’s ‘MLS’ (Multi-Layer Steel’) gaskets are 3-piece head gaskets that are made up of a stainless steel center sandwiched by two viton-coated spring steel embossed outer layers for a seal that can withstand the shearing forces created in the head gasket environment. Non-intrusive rivets hold the combination together. Sold in 2 different thicknesses, .040” (standard) and .030” (high compression). Piston-to-head clearance should be verified (.030”-.032” optimum) before using .030” gaskets. Sold in pairs.
  8. Be the first to review this product

    As low as: $54.95

    Cometic® Gasket Sets for Shovelhead & Ironhead Sportster® Engines - These gaskets are used in critical sealing surfaces such as rocker box and cylinder base gaskets. Head gaskets included with these kits are Cometic’s ‘MLS’ ("Multi-Layer Steel’) gaskets. The balance of components included with these kits are made from the highest quality materials to ensure that your engine stays leak-free. Zipper's Performance stocks most all gaskets, seals and o-rings individually. Contact Us with your specific needs!
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