{"product_id":"loctite-head-bolt-water-jacket-sealant-50-ml-oem-thread-sealant-and-anti-corrosion-lubricant","title":"Loctite Head Bolt \u0026 Water Jacket Sealant 50 ml — OEM thread sealant and anti-corrosion lubricant","description":"\u003cb\u003eLoctite 1158514 Head Bolt \u0026amp; Water Jacket Sealant is a 50 ml OEM-grade thread sealant that prevents corrosion and loosening on engine fasteners while lubricating threads for reliable assembly.\u003c\/b\u003e\n\n\u003cp\u003eThis compact, manufacturer-tested formula was developed for engine builders and technicians who need a dependable way to secure threaded connections that pass through coolant passages or are exposed to heat and vibration. Supplied in a 50 ml tube, the sealant fills thread gaps, reduces the chance of fastener movement over time, and protects metal surfaces from rust so components remain serviceable during future repairs.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this sealant improve assembly and reduce fastener failure?\u003c\/h3\u003e\n\u003cp\u003eThe product acts both as a lubricant during installation and as a cured seal that locks threads against vibration-induced loosening. Its chemistry allows a smooth torque application and creates a stable interface that preserves clamp load under thermal cycling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLubricates threads to ensure consistent torque readings and prevent galling.\u003c\/li\u003e\n  \u003cli\u003eFills micro-gaps between mating threads to preserve preload.\u003c\/li\u003e\n  \u003cli\u003eResists vibration and thermal stress typical in engine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engine components is this sealant best suited for?\u003c\/h3\u003e\n\u003cp\u003eDesigned for fasteners near coolant passages and critical engine joints, it works where sealing and corrosion protection are both necessary. The sealant is compatible with common engine metals and recommended for specific high-stress locations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHead bolts and studs that run through water jackets.\u003c\/li\u003e\n  \u003cli\u003eWater pump bolts and thermostat housing fasteners.\u003c\/li\u003e\n  \u003cli\u003eIntake manifold bolts and temperature sensor threads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes Loctite 1158514 trusted by professionals and OEMs?\u003c\/h3\u003e\n\u003cp\u003eThe formulation has been validated by automotive manufacturers, so it meets standards expected in repair shops and assembly lines. Its balance of sealing performance and removability makes it a practical choice for both new builds and maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM-spec testing ensures consistent performance in engine applications.\u003c\/li\u003e\n  \u003cli\u003eProvides corrosion protection to simplify future disassembly.\u003c\/li\u003e\n  \u003cli\u003eSmall 50 ml size for controlled use and minimal waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should the product be applied and what are basic precautions?\u003c\/h3\u003e\n\u003cp\u003eApply to clean, dry threads and assemble according to torque specifications. Allow the recommended cure time before pressurizing or running the engine, and avoid contamination with oils or coolants during application for best results.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean threads of oil, dirt, and old sealant prior to use.\u003c\/li\u003e\n  \u003cli\u003eApply an even coating to male threads; assemble and torque per OEM specs.\u003c\/li\u003e\n  \u003cli\u003eObserve any stated cure window before exposing to coolant or pressure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Loctite 1158514 is intended for professional mechanics, engine builders, and knowledgeable DIYers working on cooling-system-adjacent fasteners and other critical threaded joints. Use it when you need an OEM-validated solution that balances secure sealing, corrosion protection, and future serviceability in engines and related components.\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: Can I use this sealant on head bolts in aluminum engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s formulated for common engine metals including aluminum, providing sealing and corrosion protection without harming surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long before I can pressurize the cooling system after application?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Allow the manufacturer-recommended cure time; typically wait until the sealant has set per product instructions before pressurizing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Loctite","offers":[{"title":"Default Title","offer_id":48084761378974,"sku":"B004QXL4F2","price":40.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/loctite-head-bolt-sealant-front-label.jpg?v=1785862122","url":"https:\/\/northtrailauto.ca\/products\/loctite-head-bolt-water-jacket-sealant-50-ml-oem-thread-sealant-and-anti-corrosion-lubricant","provider":"North Trail Auto","version":"1.0","type":"link"}