{"product_id":"pqy-ls-head-studs-kit-for-chevy-2004-2019-5-3l-6-0l-heat-treated-12-point-studs-with-black-oxide-finish","title":"PQY LS Head Studs Kit for Chevy 2004-2019 5.3L\/6.0L — Heat-Treated 12-Point Studs with Black Oxide Finish","description":"\u003cb\u003ePQY Cylinder LS head studs kit is a direct-fit, high-strength 12-point stud and nut set engineered to replace worn or corroded head fasteners on 2004–2019 Chevy LS-series 4.8L\/5.3L\/6.0L engines.\u003c\/b\u003e\n\n\u003cp\u003eThis kit supplies the hardware needed to restore clamp load reliability at the head-to-block joint, using centerless-ground, heat-treated studs rated to roughly 180k psi tensile strength. PQY designed the set for direct replacement of factory bolts on many LS1\/LS3\/LS6 and Vortec applications, offering corrosion-resistant black oxide finishes, parallel-ground washers and matched 12-point nuts to simplify installation and improve durability compared with old, rusted fasteners.\u003c\/p\u003e\n\n\u003ch3\u003eWill this kit fit my Chevy 5.3L or 6.0L from 2004–2019?\u003c\/h3\u003e\n\u003cp\u003eYes — the PQY Cylinder LS Head Studs Bolts Kit is specified for 2004-and-newer LS-series engines including 4.8L, 5.3L and 6.0L variants. It replaces common factory part 234-4317 and fits many LS1, LS3, LS6 and Vortec blocks used across GM trucks and SUVs in that model range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible engines: LS1\/LS3\/LS6 and Vortec 4.8L\/5.3L\/6.0L (2004–2019)\u003c\/li\u003e\n  \u003cli\u003eDirect-replacement dimensions designed to match factory locations\u003c\/li\u003e\n  \u003cli\u003eReplaces part number 234-4317 where applicable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow strong are these studs and what torque values should I use?\u003c\/h3\u003e\n\u003cp\u003ePQY head studs are centerless-ground and heat treated to deliver high tensile strength and predictable clamping performance. They’re nominally rated around 180k psi tensile, with manufacturer-recommended torque settings for consistent installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eM11 head studs: torque to 70 ft-lbs for secure clamping\u003c\/li\u003e\n  \u003cli\u003eM8 studs: torque to 25 ft-lbs where specified\u003c\/li\u003e\n  \u003cli\u003eUse supplied parallel-ground washers and 12-point nuts for even load distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and finishes are used, and how do they handle heat and corrosion?\u003c\/h3\u003e\n\u003cp\u003eThe kit uses high-ductility iron fasteners with a black oxide finish for basic corrosion resistance and improved high-temperature performance versus untreated hardware. The combination of the substrate and finish gives a balance of toughness and thermal stability appropriate for routine engine temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIron studs and nuts with black oxide finish for rust resistance\u003c\/li\u003e\n  \u003cli\u003eHeat-treated and centerless-ground for dimensional accuracy\u003c\/li\u003e\n  \u003cli\u003eParallel-ground washers reduce distortion under load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included in the PQY head stud kit and is installation difficult?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains all common pieces needed for a full head-stud conversion on an LS engine with straightforward, bolt-on replacement procedures. Installation is accessible for anyone comfortable with cylinder-head work and following torque sequence and specification guidelines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e10 × M8 studs, 20 × M11 studs\u003c\/li\u003e\n  \u003cli\u003e30 × parallel-ground washers and 30 × 12-point nuts\u003c\/li\u003e\n  \u003cli\u003eDirect-replace design: swap out old bolts\/studs during head reinstallation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The PQY Cylinder LS Head Studs Bolts Kit is aimed at technicians, home mechanics and performance enthusiasts rebuilding or refreshing 2004–2019 Chevy LS-series 4.8L\/5.3L\/6.0L cylinder heads. Choose this set if you need stronger, corrosion-resistant replacement fasteners that match factory fitment and provide reliable clamp force for routine street, tow, or mild performance use. If any components are missing from the box, contact PQY customer support for prompt assistance.\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: Does this kit replace factory part 234-4317?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the PQY kit is designed as a direct replacement for part number 234-4317 where used on compatible LS engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What torque specs should I use for the studs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Torque M11 studs to 70 ft-lbs and M8 studs to 25 ft-lbs, using the supplied washers and correct sequence.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PQY","offers":[{"title":"Default Title","offer_id":48084079837342,"sku":"B0B4FP6GBT","price":79.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/pqy-head-studs-front-packaging.jpg?v=1785845741","url":"https:\/\/northtrailauto.ca\/products\/pqy-ls-head-studs-kit-for-chevy-2004-2019-5-3l-6-0l-heat-treated-12-point-studs-with-black-oxide-finish","provider":"North Trail Auto","version":"1.0","type":"link"}