{"title":"2020-2026 GM 2500HD\/3500HD 6.6L L5P Duramax Head Studs \u0026 Main Studs","description":"\u003cdiv\u003e\n\u003cinput id=\"post-1\" class=\"read-more-state\" type=\"checkbox\"\u003e\n\u003cp class=\"read-more-wrap\"\u003e\u003cspan class=\"read-more-target\"\u003eFor those pushing the limits of their 2020-2026 GM 6.6L Duramax L5P build, upgrading to high-performance head studs and main studs is necessary. These heavy-duty fasteners are designed to provide superior clamping force, preventing head gasket failures and engine damage when running high boost levels or increased horsepower. They're ideal for heavily modified or high-stress applications as they offer far greater strength and reliability compared to the stock bolts. Pair these studs with new \u003ca href=\"2020-2024-gm-duramax-66l-l5p-gaskets\" title=\"2020-2024 GM 2500HD\/3500HD 6.6L L5P Duramax Gaskets \u0026amp; Gasket Kits\" rel=\"noopener\" target=\"_blank\"\u003eGaskets\u003c\/a\u003e or any \u003ca href=\"2020-2024-gm-duramax-66l-l5p-rods-pistons-cams\" title=\"2020-2024 GM 2500HD\/3500HD 6.6L L5P Duramax Rods, Pistons \u0026amp; Cams\" rel=\"noopener\" target=\"_blank\"\u003eRods, Pistons \u0026amp; Cams\u003c\/a\u003e to get the most out of your 6.6L Duramax. \u003cspan class=\"headerspam\"\u003e\u003cstrong\u003eGM Duramax Fitments:\u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM 6.6L Duramax.\u003c\/span\u003e \u003cspan class=\"headerspam\"\u003e\u003cstrong\u003eSubmodel Fitments:\u003c\/strong\u003e WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.\u003c\/span\u003e \u003cspan class=\"headerspam\"\u003eSome exceptions apply, please see individual product pages for specific fitments.\u003c\/span\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003clabel class=\"read-more-trigger\" for=\"post-1\"\u003e\u003c\/label\u003e\n\u003c\/div\u003e","products":[{"product_id":"gator-hsk66l5p-head-stud-kit-17-21-gm-6-6l-duramax","title":"Gator Fasteners HSK66L5P Head Stud Kit | 2017-2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt for high-performance Duramax engines\u003c\/li\u003e\n\u003cli\u003eHandles 220,000 PSI tensile strength\u003c\/li\u003e\n\u003cli\u003ePrevents head gasket failure under boost\u003c\/li\u003e\n\u003cli\u003eMade from HD220 high-strength material\u003c\/li\u003e\n\u003cli\u003eRolled threads for added durability\u003c\/li\u003e\n\u003cli\u003eIncludes Gator Juice assembly lube\u003c\/li\u003e\n\u003cli\u003ePrecision machined and heat treated\u003c\/li\u003e\n\u003cli\u003eIncludes washers and nuts for install\u003c\/li\u003e\n\u003cli\u003ePerfect for towing and aggressive tuning\u003c\/li\u003e\n\u003cli\u003eIdeal for racing or sled pulling builds\u003c\/li\u003e\n\u003cli\u003eDirect replacement for factory head bolts\u003c\/li\u003e\n\u003cli\u003eEngineered for long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eKeep Your Engine in Check with a New Head Stud Kit\u003c\/h4\u003e\n\u003cp\u003eIf you're putting serious power to the ground with your L5P Duramax, head studs aren't just an upgrade, they're a necessity. The Gator Fasteners Head Stud Kit is built to handle the high cylinder pressures that come with big boost, heavy loads, and aggressive tuning. Whether you're building a street truck, towing rig, or weekend sled puller, this kit gives your engine the clamping force it needs to stay sealed and reliable under extreme conditions. Unlike factory head bolts that can stretch and allow gasket failure, these studs are made from HD220 material with an incredible 220,000 PSI tensile strength. That means they’re designed to lock your heads down tight, even when the pressure’s on. Threads are rolled after heat treating to improve fatigue resistance, ensuring long-term durability in the harshest environments.\u003c\/p\u003e\n\u003ch4\u003eStraightforward Install\u003c\/h4\u003e\n\u003cp\u003eThe kit includes everything you need for a proper install, studs, nuts, washers, and even Gator’s own “Gator Juice” assembly lube to make sure torque loads are applied evenly. It’s a complete, no-nonsense solution for anyone pushing their L5P beyond factory limits. And with precision machining and heat-treated components, you know you're getting quality that lasts. If you’re chasing horsepower or just want peace of mind under heavy towing, this is a rock-solid way to keep your head gaskets happy. Nothing bites like Gator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eForum postings could provide incorrect torque values. Please follow the included installation instructions for proper torque specifications and tightening sequence.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"file:\/\/\/C:\/Users\/nick.kovar\/Downloads\/install-instructions.pdf\" target=\"_blank\"\u003e\u003cstrong\u003eInstall Instructions\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Gator Fasteners","offers":[{"title":"Default Title","offer_id":49527009411356,"sku":"GTFHSK66L5P","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/gator-fasteners-sierra2500-heavy-duty-head-stud-kit-hsk66l5p.HG29006.webp?v=1743018652"},{"product_id":"230-4301-17-21-gm-66l-duramax-arp-head-stud-kit","title":"ARP 230-4301 Head Stud Kit | 2017-2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to unlock more performance out of your truck\u003c\/li\u003e\n\u003cli\u003eDelivers a reasonable balance of strength and durability\u003c\/li\u003e\n\u003cli\u003eEnsures smooth, reliable operation \u0026amp; long-lasting service\u003c\/li\u003e\n\u003cli\u003eMade of proprietary ARP 2000 Material\u003c\/li\u003e\n\u003cli\u003eHeat-treated prior to thread rolling for optimum strength\u003c\/li\u003e\n\u003cli\u003eRated at 220,000 psi tensile strength\u003c\/li\u003e\n\u003cli\u003eAmple clamping force prevents cylinder heads from shifting\u003c\/li\u003e\n\u003cli\u003eBroached stud ends install \u0026amp; make head removal easier\u003c\/li\u003e\n\u003cli\u003eComes with 0.5oz of ARP assembly lubricant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eComplete ARP Head Stud Kit for Aggressive 6.6L Duramax Builds\u003c\/h4\u003e\n\u003cp\u003eHead studs have long been a troublesome component of Duramax engines, allowing head-lift even during basic performance applications. If you're building your truck out for superior off-road performance or towing, you're going to want to swap out those head studs before they end up causing more problems down the road. That's exactly where these ARP Pro Series Head Studs come to play as they can easily handle aggressive and extreme driving conditions to get your truck's heads locked down even under intense levels of boost pressure. As direct replacement over stock, this head stud kit will ensure smooth and reliable operation for many years to come. Additionally, these studs deliver a reasonable balance of both strength and durability, so they'll be ready for just about anything you throw their way.\u003c\/p\u003e\n\u003ch4\u003eHeavy Duty Construction \u0026amp; Installation Info\u003c\/h4\u003e\n\u003cp\u003eEach one of these ARP Duramax Head Studs are made from ARP's proprietary 2000 material, rated at 220,000 PSI tensile strength, complete with insanely strong threads that are rolled after being heat-treated for optimum fatigue strength. Moreover, included in this kit come heat-treated, chromoloy steel 12-point nuts and parallel ground washers, with a black oxide finish for extreme durability. This ensures ample clamping force to prevent the cylinder heads from shifting even after stacking on any turbocharger upgrades, aggressive tuning, and any other extreme modifications. When it comes to installation, these heads are a direct replacement of your factory components and even come standard with broached ends to make the mounting and removal process that much easier. This kit even includes 1\/2oz of ARP assembly lubricant to ensure the process runs safely and smoothly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement for factory head bolts on Duramax\u003c\/li\u003e\n\u003cli\u003eMade from proprietary ARP 2000 material for strength\u003c\/li\u003e\n\u003cli\u003eRated at 220,000 psi tensile strength\u003c\/li\u003e\n\u003cli\u003eHeat-treated before thread rolling for fatigue resistance\u003c\/li\u003e\n\u003cli\u003eDesigned to prevent head-lift under high boost pressure\u003c\/li\u003e\n\u003cli\u003eIncludes 12-point nuts and parallel ground washers\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish improves corrosion resistance\u003c\/li\u003e\n\u003cli\u003eBroached stud ends make head removal easier\u003c\/li\u003e\n\u003cli\u003eKit includes ARP assembly lubricant for installation\u003c\/li\u003e\n\u003cli\u003eIntended for performance builds, towing, and heavy-duty use\u003c\/li\u003e\n\u003cli\u003eFits 2017–2025 GM Silverado\/Sierra 2500HD and 3500HD Duramax\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended for best results\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":49527342792988,"sku":"ARP230-4301","price":670.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/ARP230-4301_01.jpg?v=1722346229"},{"product_id":"100-9911-arp-ultra-torque-fastener-assembly-lubricant-20-oz","title":"ARP 100-9911 Ultra-Torque Fastener Assembly Lubricant (20 oz) | Universal","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduces fastener preload scatter\u003c\/li\u003e\n\u003cli\u003eEnsures consistent torque every installation\u003c\/li\u003e\n\u003cli\u003ePrevents seizing and galling of fasteners\u003c\/li\u003e\n\u003cli\u003eWorks from -50°F to 2000°F\u003c\/li\u003e\n\u003cli\u003eDelivers repeatable clamping force every time\u003c\/li\u003e\n\u003cli\u003eMetal-free formula with anti-seize properties\u003c\/li\u003e\n\u003cli\u003ePrevents rust and corrosion long-term\u003c\/li\u003e\n\u003cli\u003eEliminates need to cycle fasteners\u003c\/li\u003e\n\u003cli\u003e95%-100% preload accuracy on first pull\u003c\/li\u003e\n\u003cli\u003eMaintains preload within 5% across cycles\u003c\/li\u003e\n\u003cli\u003eIdeal for ARP and other performance hardware\u003c\/li\u003e\n\u003cli\u003eUniversal use for all threaded fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eMake Every Torque Pull Count From The Start\u003c\/h4\u003e\n\u003cp\u003eWhen you’re putting together a high-performance engine, every little detail matters, and that includes the lubricant you use on your fasteners. ARP's Ultra-Torque Fastener Assembly Lubricant gives you a serious edge right from the first pull. Designed to eliminate the need to cycle fasteners before final torque, this lube helps you hit that ideal clamping force on the very first go. Whether you're bolting down heads, main caps, or rods, you’ll get consistent and reliable results without second-guessing your torque wrench. It prevents seizing, galling, rust, and corrosion while making installation smoother and more predictable. This means fewer surprises, cleaner builds, and components that stay locked down under pressure. If you want peace of mind from the garage to the track, this 20 oz bottle of Ultra-Torque delivers every time.\u003c\/p\u003e\n\u003ch4\u003eEngineered For Precision In High Stress Builds\u003c\/h4\u003e\n\u003cp\u003eARP Ultra-Torque Fastener Assembly Lubricant is specifically formulated to maintain precise and repeatable fastener preload in even the most demanding applications. It obtains 95 to 100 percent of ARP's recommended installation preload on the first torque sequence, which eliminates the need to repeatedly cycle fasteners during engine mock-up or final assembly. The formula is a premium blend of extreme-pressure lubricants with anti-seize additives that perform across a wide temperature range from -50°F to 2000°F. Its metal-free makeup resists melting up to 360°F and provides excellent protection against thread galling and long-term corrosion. Once applied, it stabilizes preload within a 5 percent margin across grouped fasteners like cylinder heads, main caps, or rod caps, ensuring uniform clamping pressure. That level of control means more accurate bore dimensions during machining and less variability during final assembly. Whether you're blueprinting an engine or bolting together your weekend warrior, ARP Ultra-Torque is the go-to choice for dependable, high-precision fastener performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fits: \u003c\/strong\u003e Universal\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for use with all ARP fasteners\u003c\/li\u003e\n\u003cli\u003eDelivers 95%-100% of preload on first torque\u003c\/li\u003e\n\u003cli\u003eNo need to cycle fasteners before final install\u003c\/li\u003e\n\u003cli\u003eMaintains preload consistency within 5% across cycles\u003c\/li\u003e\n\u003cli\u003eHelps ensure uniform bore dimensions during machining\u003c\/li\u003e\n\u003cli\u003ePerforms across a wide -50°F to 2000°F range\u003c\/li\u003e\n\u003cli\u003eMetal-free formula prevents thread galling and seizing\u003c\/li\u003e\n\u003cli\u003eIncludes extreme-pressure and anti-seize additives\u003c\/li\u003e\n\u003cli\u003eProtects against rust and corrosion over time\u003c\/li\u003e\n\u003cli\u003eMelting point of 360°F under assembly conditions\u003c\/li\u003e\n\u003cli\u003eSafe for use on all threaded fastener materials\u003c\/li\u003e\n\u003cli\u003eUniversal fitment for automotive and industrial use\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":49527342858524,"sku":"ARP100-9911","price":27.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/100-9911.jpg?v=1743018438"},{"product_id":"ppe-118034700-head-stud-kit-17-24-gm-66l-duramax","title":"PPE 118034700 Head Stud Kit | 2017-2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis kit is built for high-performance and stock applications\u003c\/li\u003e\n\u003cli\u003eTensile strength of over 230,000 psi\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish, for protection from corrosion\u003c\/li\u003e\n\u003cli\u003e1 year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eExceeds Industry Standards\u003c\/h4\u003e\n\u003cp\u003eFor engine builders who demand the highest level of strength and precision in their fasteners, the PPE Head Stud Kit is the ultimate solution for high-performance diesel engines. With a focus on accuracy and strength, each stud is center-less ground with precision and is thread rolled to meet Mil-S-8879 specifications, resulting in increased durability and reduced stress at the threads.\u003c\/p\u003e\n\u003ch4\u003eAdds Longevity and Durability\u003c\/h4\u003e\n\u003cp\u003eWith an independently tested and verified tensile strength of over 231,900 psi, these studs outperform even the most venerable manufacturer. Whether you’re pushing your engine to its limits on the track or seeking increased longevity, the PPE Stud Kit delivers durability and confidence that surpasses your expectations. Each kit comes complete with everything you need for installation, hardened parallel washers, nuts, and specially formulated assembly grease.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0611\/8539\/2883\/files\/118034700_Install_Guide_v1.pdf?v=1654809206\" title=\"Installation Instructions\" target=\"_blank\"\u003e Installation Instructions\u003c\/a\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e This product can expose you to chemicals that are known to the State of California to cause cancer. For more information, visit \u003ca href=\"https:\/\/www.p65warnings.ca.gov\/\" rel=\"noopener noreferrer\" data-auth=\"NotApplicable\" data-linkindex=\"0\" target=\"_blank\"\u003ewww.P65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e","brand":"PPE","offers":[{"title":"Default Title","offer_id":49527569580316,"sku":"PPE118034700","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/20ppe_20118034700_01.jpg?v=1722359519"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/collections\/GM_Duramax_Head_Studs_Thumb_1.jpg?v=1738104940","url":"https:\/\/www.alligatorperformance.com\/collections\/2020-2026-gm-duramax-66l-l5p-head-studs-main-studs.oembed","provider":"Alligator Performance","version":"1.0","type":"link"}