{"product_id":"yzqpnb-12-point-head-stud-bolt-kit-for-gm-ls-engines-2004-2019-8740-chromoly-black-oxide","title":"YZQPNB 12-Point Head Stud Bolt Kit for GM LS Engines (2004–2019) — 8740 Chromoly, Black Oxide","description":"\u003cp\u003e\u003cstrong\u003eYZQPNB's 12-point head stud bolt kit is a complete direct-replacement fastener set engineered to install and secure cylinder heads on 2004–2019 GM LS-series V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit supplies a full complement of hardened chromoly studs, 12-point nuts and precision washers designed specifically for many LS1, LS3 and other 4.8L–6.0L GM engines. It replaces part number 234-4317 as a non-OEM direct-fit option and is built to improve clamping consistency during head torqueing and repeated service. All components are manufactured from 8740 high-tensile chromoly steel with a black oxide finish, and washers are parallel-ground to distribute load evenly and give reliable torque readings.\u003c\/p\u003e\n\n\u003ch3\u003eWill this kit fit my 2004–2019 Chevy LS engine?\u003c\/h3\u003e\n\u003cp\u003eYes — the kit is intended as a direct replacement for many GM small-block LS applications spanning 2004 through 2019. It lists compatibility with LS1, LS3 and other common 4.8L, 5.3L, 5.7L and 6.0L engine variants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to replace part 234-4317 (non-OEM alternative)\u003c\/li\u003e\n  \u003cli\u003eCompatible with LS1, LS3, LS6, L98 and other referenced GM engines\u003c\/li\u003e\n  \u003cli\u003eFits 4.8L, 5.3L, 5.7L and 6.0L cylinders as stated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the kit built to withstand repeated engine service?\u003c\/h3\u003e\n\u003cp\u003eThe studs and nuts are made from 8740 chromoly steel and undergo quality checks for strength and dimensional accuracy. Components receive a black oxide surface finish for corrosion resistance and consistent torque behavior.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHardened chromoly studs for high tensile strength\u003c\/li\u003e\n  \u003cli\u003eParallel-ground washers to ensure even clamping and accurate torque readings\u003c\/li\u003e\n  \u003cli\u003e12-point nuts for positive engagement with common torque tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly is included in the package?\u003c\/h3\u003e\n\u003cp\u003eThe kit provides everything required to replace cylinder head fasteners for typical LS head installations, so you’ll have the proper count of studs, nuts and washers for an overhaul or service job.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e10 M8 studs (shorter studs supplied where needed)\u003c\/li\u003e\n  \u003cli\u003e20 M11 head studs sized for LS head applications\u003c\/li\u003e\n  \u003cli\u003e30 parallel-ground washers for uniform load transfer\u003c\/li\u003e\n  \u003cli\u003e30 12-point nuts to match the studs and simplify torque steps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDo I need any special tools or preparation to install these studs?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard head-stud replacement procedures: clean threads, follow torque sequence, and use a calibrated torque wrench. No proprietary tools are required, but thread prep and correct torque values for your specific engine are essential.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse thread chaser or clean existing threads before assembly\u003c\/li\u003e\n  \u003cli\u003eFollow manufacturer torque sequence and specified torque steps\u003c\/li\u003e\n  \u003cli\u003eCalibrated torque wrench and 12-point socket set recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Mechanics, engine builders and DIY enthusiasts who need a robust, cost-effective replacement for worn or damaged GM LS-series head bolts will find this kit useful. It’s targeted at professionals and home mechanics working on 2004–2019 LS1\/LS3 and similar 4.8L–6.0L engines who want a high-strength chromoly solution with parallel-ground washers for reliable clamping and repeatable torque readings. If you require a genuine OEM fastener, check factory sources; otherwise this kit provides complete hardware for most LS head installations. For any questions or support regarding fitment or installation, contact the seller so issues can be addressed promptly.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this an OEM part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, it is a direct replacement for part 234-4317 but not a genuine OEM component.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include all hardware for an LS head install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the package contains M8 and M11 studs, 30 washers and 30 12-point nuts for typical LS head applications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YZQPNB","offers":[{"title":"Default Title","offer_id":67586631532729,"sku":"B09N6M4X99","price":135.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/yzqpnb-front-packaging-head-stud-kit.jpg?v=1790488629","url":"https:\/\/redleafauto.ca\/products\/yzqpnb-12-point-head-stud-bolt-kit-for-gm-ls-engines-2004-2019-8740-chromoly-black-oxide","provider":"Redleaf Auto","version":"1.0","type":"link"}