{"product_id":"loctite-263-threadlocker-for-automotive-high-strength-oil-tolerant","title":"LOCTITE 263 Threadlocker for Automotive - High-Strength, Oil Tolerant","description":"\u003cp\u003eOur review of LOCTITE 263 finds it best suited for professional mechanics and serious DIYers who need a dependable, permanent threadlocker for metal fasteners. The single biggest reason to buy is its proven heavy-duty adhesion on both active and passive metals, combined with improved oil tolerance that makes assembly on slightly oily parts reliable. Tested by auto manufacturers and used in engine builds, this product is aimed at applications where vibration, shock, and high temperature demand a threadlocker that sets quickly and resists loosening.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-specified design:\u003c\/strong\u003e Formulated and lab tested for automotive assembly, giving confidence in engine and drivetrain applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable adhesion:\u003c\/strong\u003e Bonds to active and passive metals, including stainless steel and plated surfaces, to prevent loosening and leakage from shock and vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil tolerant:\u003c\/strong\u003e Improved tolerance to slightly oily fasteners reduces prep time and increases success on real-world components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat removable:\u003c\/strong\u003e Designed to be permanent under service but removable with localized heating and hand tools when disassembly is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast curing:\u003c\/strong\u003e Sets in about 10 minutes and reaches full cure in 24 hours, allowing assemblies to be handled quickly after installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorescent formula:\u003c\/strong\u003e Contains fluorescent components that help with inspection under appropriate lighting conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis threadlocker is aimed at automotive technicians, engine builders, and serious enthusiasts who assemble or repair engines, transmissions, and other components exposed to heavy shock and vibration. It is suitable for securing cylinder block bolts, ring gear bolts, transmission shaft bolts, and other fasteners up to 1in (25 mm).\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include casual hobbyists who need removable or low-strength retention for frequent disassembly, and users who require a non-anaerobic or temporary thread adhesive. If easy hand removal without heat is a priority, a medium-strength product would be a better fit.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-strength bond that resists shock and vibration on a wide range of metals.\u003c\/li\u003e\n\u003cli\u003eImproved oil tolerance helps when fasteners are not perfectly clean or are slightly contaminated.\u003c\/li\u003e\n\u003cli\u003eFast set time of about 10 minutes lets assemblies be moved or torqued without long delays.\u003c\/li\u003e\n\u003cli\u003eRemovable with heat so serviceable joints can be separated when required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for permanent locking; separation requires heat and hand tools rather than simple hand loosening.\u003c\/li\u003e\n\u003cli\u003eRed, high-strength formula is overkill for low-stress or frequently disassembled fasteners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eLoctite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003e263 Threadlocker (red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume per tube\u003c\/td\u003e\n\u003ctd\u003e6 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e3 tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication range\u003c\/td\u003e\n\u003ctd\u003eFasteners up to 1in (25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCure time\u003c\/td\u003e\n\u003ctd\u003eSets ~10 minutes, full cure 24 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProperties\u003c\/td\u003e\n\u003ctd\u003eHigh-strength, oil tolerant, high-temperature, fluorescent, anaerobic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eLOCTITE 263 is a reliable, OEM-specified threadlocker for heavy-duty automotive work where permanent retention and oil tolerance matter. It offers fast handling strength, broad metal compatibility, and heat removability for service, making it a good value for mechanics and engine builders who need durable, long-lasting thread security.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this be used on slightly oily fasteners?\u003c\/strong\u003e\u003cbr\u003eYes, the formula has improved oil tolerance and can work on slightly oily fasteners, though cleaner surfaces improve final strength.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow are parts separated after use?\u003c\/strong\u003e\u003cbr\u003eParts secured with this high-strength threadlocker are removable with localized heating and hand tools; simple hand loosening is not expected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size fasteners is it intended for?\u003c\/strong\u003e\u003cbr\u003eIt is recommended for as-received fasteners up to 1in (25 mm) in size, covering many engine and transmission bolts.\u003c\/p\u003e","brand":"Loctite","offers":[{"title":"Default Title","offer_id":48663575855323,"sku":"B0D8724WFG","price":32.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71x5_YLMMBL._AC_SL1333.jpg?v=1778682957","url":"https:\/\/gearmusthave.com\/products\/loctite-263-threadlocker-for-automotive-high-strength-oil-tolerant","provider":"GearMustHave","version":"1.0","type":"link"}