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🔩 Lock it down, loosen it up — the pro’s choice for every bolt!
LOCTITE 243 is a blue, medium-strength threadlocker designed for automotive use, offering oil tolerance and reliable adhesion on all metals including passive substrates. It cures anaerobically within 10 minutes and fully in 24 hours, providing a removable yet secure bond for fasteners between 6mm and 20mm. Trusted by OEMs and professional mechanics alike, it ensures vibration resistance and easy maintenance with hand tools.




| Asin | B004L439FE |
| Best Sellers Rank | #8,180 in Automotive (See Top 100 in Automotive) #54 in Automotive Fillers, Adhesives & Sealants |
| Brand Name | LOCTITE |
| Color | Blue |
| Compatible Material | Metal |
| Container Type | Tube |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,203) 4.8 out of 5 stars |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340439078 |
| Included Components | (1) 243 Threadlocker for Automotive, Blue, 6-ml |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | automotive-thread-lock-sealers |
| Item Weight | 18 g |
| Manufacturer | Loctite |
| Material Type | Aluminum,Stainless Steel |
| Model | 1330799 |
| Number Of Pieces | 1 |
| Other Special Features Of The Product | Oil Tolerant, Medium Strength Bond, Removable with Hand Tools, Improved Adhesion on Various Metals and Passive Substrates |
| Part Interchange Info | 1330799 |
| Part Number | 1330799 |
| Specific Uses For Product | Automotive |
| Upc | 079340439078 |
| Viscosity Level | High |
| Volume | 6 Milliliters |
| Water Resistance Level | Water Resistant |
User
good
good
User
Handy threadlocker for gym gear
I used it on my son’s skateboard truck bolts after they kept backing out and they finally stayed tight. i like that it works on oily threads in the garage too, reallly saves me redoing stuff.
User
Good stuff, really works better than the 242 on stainless and oily environment
The 243 formula really makes a difference when used on stainless and other corrosion resistant metals, even with oil or grease contamination, like that you often get in tap holes of anything mechanical like engine, bikes, gears and sprockets, motors, etc. Using the 242, I often observed very poor, if not total lack of thread locking, when using stainless fasteners or in a shop environment, anywhere around greasy or oily parts. With the 243, I still yet to have a failure in thread locking and I've been using it for over a year now.36mL is a lot cheaper than the 6mL tube and no, it won't go to waste because you used it once a year ago and are afraid it's no good anymore. Simply cap it off properly and it's gonna remain usable for a very long time. Don't forget to shake it up before using it that day, just like you would shake and stir your paint before painting.
User
Great value , brand name quality.
Its loctite and it works. Short and simple!
User
Bueno
Muy buen producto. Les aconsejo agitarlo y al final sacudirlo hacia la base, con la punta hacia arriba ya que de lo contrario la diferencia de presión de la burbuja de aire dentro del resilience puede hacer que brote el contenido. En mi caso el producto fue algo espeso y tardó en asentarse. Cumple su función a la perfección. NOTA Cuenta con una indicación de ser posible generador de cancer .
Trustpilot
5 days ago
1 month ago