--- product_id: 149710836 title: "Loctite 243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799)" brand: "loctite" price: "Β₯10645" currency: JPY in_stock: true category: "Loctite" url: https://www.desertcart.jp/products/149710836-loctite-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high store_origin: JP region: Japan --- # Medium-strength lock High-temp resistant Oil tolerant formula Loctite 243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799) **Brand:** loctite **Price:** Β₯10645 **Availability:** βœ… In Stock ## Summary > πŸ”§ Lock it down, heat it up, and never let go! ## Quick Answers - **What is this?** Loctite 243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799) by loctite - **How much does it cost?** Β₯10645 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/149710836-loctite-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high) ## Best For - loctite enthusiasts ## Why This Product - Trusted loctite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Easy Disassembly:** Designed for hand tool removalβ€”service your vehicle without hassle - β€’ **Oil & Heat Resilience:** Maintains bond strength even in oily, high-temperature automotive environments - β€’ **Race-Proven Performance:** Trusted by professional race teams for engine assembly and maintenance - β€’ **Reliable Vibration Lock:** Secures fasteners from 1/4" to 3/4" (6-20mm) against loosening under stress - β€’ **Universal Metal Compatibility:** Works flawlessly on stainless steel, aluminum, plated surfaces, and more ## Overview Loctite 243 Threadlocker is a medium-strength, blue anaerobic adhesive designed for automotive fasteners sized 6-20mm. It offers superior oil tolerance and high-temperature resistance, locking and sealing threaded metal parts to prevent loosening from vibration. Compatible with various metals including stainless steel and aluminum, it cures without primers and allows easy disassembly with hand tools. Widely trusted in professional racing and automotive repair, it ensures durable, reliable fastening in demanding conditions. ## Description LOCTITE 243 is a general purpose, medium strength, primerless, blue threadlocker with improved oil tolerance. For fasteners between 1/4" to 3/4" (6mm to 20mm). Parts can be separated using hand tools.LOCTITE 243 is a general purpose threadlocker that provides a medium strength bond. This product works on all metals, including passive substrates such as stainless steel, aluminum, and plated surfaces. It is proven to be tolerant of minor contamination.STEADFAST ADHESIONLOCTITE 243 is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. Suitable for applications on less active substrates such as plated surfaces, where disassembly with hand tools is required for servicing.LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Engines of nearly every professional race car are assembled and maintained with LOCTITE brand adhesives, sealants, gasket makers, and coatings. Whether gasoline or diesel, from bolts and gaskets to cooling lines and core plugs, Henkel products are used to seal, secure, and repair vehicle components. ## Features - May cause an allergic skin reaction. - May cause respiratory irritation. - DESIGN. Ideal for fasteners between 1/4-Inch to 3/4-Inch (6 mm to 20 mm). - SECURE. Locks and seals while preventing parts from loosening due to vibration. - RESULTS. Secure, one-piece assembly that will not loosen under stress. - EASY TO USE. Parts can be separated using hand tools. - APPLICATION. Rocker studs, rocker adjustment bolts, bolts on valve and cam covers, oil pans, disc brake calipers, intakes and alternators, pulley assemblies and much more. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004L439FE | | Best Sellers Rank | 148,232 in Automotive ( See Top 100 in Automotive ) 738 in Fillers, Adhesives & Sealants | | Brand | Loctite | | Colour | Blue,Red | | Compatible Material | Metal | | Container Type | Tube | | Customer Reviews | 4.8 4.8 out of 5 stars (3,224) | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 00079340439078 | | Included Components | (1) Threadlocker 243 Surface Insensitive-Medium Strength Tube, Blue, 6-ml | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Type Name | Loctite 1330799 Threadlocker 243 Surface Insensitive-Medium Strength Tube, Blue, 6-ml | | Item Volume | 6 Millilitres | | Item Weight | 18 g | | Manufacturer | Loctite | | Manufacturer Part Number | 1330799 | | Material | Aluminum,Stainless Steel | | Model Number | 1330799 | | Number of Pieces | 1 | | Other Special Features of the Product | Heat and oil resistant | | UPC | 079340439078 | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Loctite - **Colour:** Blue,Red - **Item form:** Liquid - **Material:** Aluminum,Stainless Steel - **Special feature:** Heat and oil resistant ## Images ![Loctite 243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799) - Image 1](https://m.media-amazon.com/images/I/81InQQNOf1L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: is there a loctite that resists gasoline ?** A: Most of our Loctite anaerobic sealants and threadlockers will resist gasoline once they're fully cured. The right product will depend on your application requirements. Please call 1-800-LOCTITE (562-8483) to receive a product recommendation from one of our engineers. **Q: How do I open the Loctite 243 bottle?** A: You simply twist the cap and it should open. **Q: Is this good to use on battery cable bolts?** A: Yes this can be used on the threads. Loctite 243 is a plastic so keep it off the post where good electrically conductive contact is required. I am thinking a car battery here. If this is a different design and IF THIS THREADED ASSEMBLY REQUIRES ELECTRICALLY CONDUCTIVY DO NO USE OUR PLASTIC THREADLOCKER IT WILL INSULATE AND GENERATE RESISTANCE. **Q: Can this still be effective on a bolt that is threaded, left to sit, and then threaded again to torque spec?** A: Left for set how long? When you remove the bolt, if it's still wet then yes, but I would wipe it off and reapply because I would want a thicker application for a tighter bond. ## Frequently Bought Together - LOCTITE 243 Automotive Threadlocker Blue - Medium Strength Thread Lock, General Purpose, Oil Tolerant - 36 ml, 1 Pack - Loctite 271 Automotive Threadlocker Red - High Strength Thread Lock, Fluorescent, Heavy-Duty, Works on All Metals - 36 ml, 1 Pack - Loctite 272 Automotive Threadlocker Red – High Temp Thread Lock, Heavy-Duty High Strength Applications, Works on All Metals - 36 ml, 1 Pack --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/149710836-loctite-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high](https://www.desertcart.jp/products/149710836-loctite-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-07*