

🔧 Stick with the pros—mirror repairs that mean business!
Permatex 81840 Extreme Rearview Mirror Adhesive Kit delivers a professional-grade, 2-part adhesive and activator system with a medical-grade towelette for precise, mess-free application. Engineered with OEM-strength formula, it guarantees a durable, long-lasting hold for mounting rearview mirrors to windshields, curing fully in 24 hours. Ideal for DIYers and pros alike seeking a reliable, clean, and easy repair solution.














| ASIN | B000HBM4TC |
| Batteries | 1 Nonstandard Battery batteries required. |
| Best Sellers Rank | #2,772 in Automotive ( See Top 100 in Automotive ) #4 in Body Repair & Restoration Adhesives |
| Brand | Permatex |
| Color | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (5,226) |
| Date First Available | July 1, 2006 |
| Exterior | Machined |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00686226818409 |
| Is Discontinued By Manufacturer | No |
| Item Form | 2 part kit |
| Item Package Quantity | 1 |
| Item Volume | 0.03 Fluid Ounces |
| Item Weight | 0.48 ounces |
| Item model number | 81840 |
| Manufacturer | Permatex |
| Manufacturer Part Number | 81840 |
| Material | Cyanoacrylate |
| Model | ITW Permatex - 81840 |
| Number of Pieces | 2 |
| OEM Part Number | 81840 |
| Package Information | Towelette, Vial |
| Product Dimensions | 0.44 x 3.81 x 6.5 inches |
| Special Feature | 2-part adhesive and activator towelette |
| Special Features | 2-part adhesive and activator towelette |
| Specific Uses For Product | Repair |
| UPC | 686226818409 |
| Viscosity | Moderate |
| Viscosity Level | Medium |
| Water Resistance Level | Not Water Resistant |
S**Y
Great hold
This worked great for our fallen mirror. The package looked as if the product was leaking on the inside as other reviewers have mentioned. But we followed the directions and it worked perfectly. It's been several months in different temperatures, and it's holding solid
S**Z
So far, so good
My rearview mirror is always falling off and I usually have to take it to the local body shop. This time, they body shop told me to take it to the glass repair shop instead since it is obviously not staying on. Instead of doing what they recommended, I decided to just fix it myself, so I ordered this adhesive to glue the mirror onto the windshield. So far, my mirror is still holding strong and it was easy to do. The only thing I would say is a downside is that there was only one wipe included in the package, so although there is enough glue for more than one application, there is only one single use wipe included. If my mirror falls off again I'll just use an alcohol wipe, but it would still be nice to have 2-3 of the wipes that is comes with.
J**N
Garbage
Garbage. it may or may not work. my tube came cracked open which leads me to believe that this stuff is lying around and just old product. How do i open a return when I've cut open an empty glue tube and cut the packaging in half. Whats the point.
A**O
Great product
I've tried many adhesives before trying Permatex 81840, and by far it provided the greatest results. Old car, 2003 Chevrolet if that matters, but the mirror is the original ,after a few years this adhesives has worked the best. Dries quickly, no need to wait hours on end, great product.
S**C
It does the job...But mixed feelings for my application...
First, let me say this; The car I've used this on twice is a 1994 Thunderbird LX. The rear view mirror is self dimming and heavier than the average mirror. The first time my mirror dropped, I purchased this product, followed the directions and rehung the mirror. About 2 years later my mirror dropped again. So, I purchased this product and did the above again. HOWEVER... This time I screwed up. I glued the windshield mount on upside down without realizing it and let the adhesive set. OOOPS... Thank god for the internet as I watched a few video's that showed that most adhesives could be loosened by using heat. For me, cold weather had set in right after I screwed up. So, I had to do this gradually with a hair dryer, then a heat gun so I wouldn't crack the windshield. Luckily the windshield didn't crack, the mount came off and I was able to easily remove the adhesive from the glass and mount. I drove the car with the side view mirrors until it warmed up and I was able to reinstall the rear view...right side up. It's been around 2 years and still holding. We'll see if it drops again. Will I use this product again? Yes. I screwed up and was easily able to fix my mistake without going to a shop. If I have to go through this every few years, I already learned and know the routine. Suggestion for you... Before you clean your old adhesive off of your windshield, use a marker on the outside to show where the mount was. You will be able to see this outline from the inside to make sure you're position is correct as well as avoid installing the mount upside down. The marker will come off the outside easily with glass cleaner and a little steel wool/scotch brite. Overall, 5 stars for saving my butt when I messed up. 4 stars because I have had to go through this every few years. It could be the weight of my mirror, the adhesive, or something I don't realize I'm doing wrong. Either way, it does the job and has your back if you screw up.
A**A
Permatex Glue
It's just a little tiny bit in the container; however, you won't need more than a drop or two.
L**M
Easy to apply
Easy to apply. Clear instructions.
O**R
Does NOT WORK!! Can Crack Windshield due to chemical HEAT!!
I bought this Loctite Rear View Mirror specific glue and it FAILED in 5 days. Mirror fell off. It was not my first Rodeo, so everything was done correctly. Bond was just no good in Florida Heat. To add injury to FAILURE...just a day before it fell off I noticed a 1 inch crack going left and right from center of the Metal tab on windshield. (It's grown to 3 inches but seems to have stopped now. Can't be felt on either side of windshield with fingernail or Razor Blade, so it's not to the exterior.....YET.) I used just ONE DROP in center and pressed it up to the glass and held it in place for proper amount of time. NO crack seen the next day when I put the mirror on. The "Activator" reaction with the glue must have had some serious heat that I didn't notice on my Thumb while holding it. I tried the Loctite cheaper Glass Glue as well since it is rated to 176F and I've measured temps of over 140F on my Truck windshield. It failed within hours of mounting mirror after letting tab cure for 48 hours. I'm trying the Loctite 5 Minute Epoxy now. It's only rated to 120F so I'm not hopeful...but it's still on after two days now. LOL If this fails....I will use PERMATEX 5 Minute Epoxy that I have used on my Golf Clubs for Decades. I've NEVER had a bond fail on those clubs. Need the Heat Gun to change out shafts. P.S. I saw Ole' Scotty Kilmer using this stuff on YouTube and poo pooing people who say it fails...Pfftt...rofl :~)
O**A
سيء جدا لا يثبت
J**Z
Pega en menos de 5 segundos, lo mantienes con el dedo 30 segundos mas, y en media hora ya puedes instalar el espejo
O**R
follow the instructions to the letter and this kit works 100% the oem install adhered for 26 years, I expect no less from this install... :)
H**.
Following the manual and waiting for dry periods of eqch steps,the outcome is great.My mirror in a Chevy Astro van is heavy.The weather....well..Dubai! 42C normally.So...the challenge is on.As the first day,I can say it is snug.After few moments of putting the metal button with the mirror on,I couldn t move it anymore.Left for overnight with some tape on it to release the weight a bit.Today I tested.Boy....it s not going to come off easily.
G**T
Producto no funciona
Trustpilot
2 weeks ago
2 months ago