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⚡ Fix your fog, fast — don’t get left in the cold!
Permatex 21351 Electrically Conductive Rear Window Defogger Tab Adhesive is a universal, weather-resistant repair kit designed to quickly restore electrical connectivity to damaged rear window defogger tabs. This all-in-one solution ensures a durable, low-cost fix trusted by thousands of users, compatible with a wide range of vehicles including RVs.



| ASIN | B000HBGKWE |
| Auto Part Orientation | Rear |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #3,907 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Motors |
| Brand | Permatex |
| Brand Name | Permatex |
| Color | clear |
| Compatible with Vehicle Type | RV |
| Customer Reviews | 3.9 out of 5 stars 4,640 Reviews |
| Global Trade Identification Number | 00686226213518 |
| Included Components | Funnel |
| Item Thickness | 5 inches |
| Item Type Name | Window Defogger Tab Adhesive |
| Manufacturer | Permatex |
| Manufacturer Part Number | 21351 |
| Manufacturer Warranty Description | See Label |
| Material | Glass |
| Material Type | Glass |
| Model Number | 21351 |
| Number of Items | 1 |
| OEM Equivalent Part Number | 21351 |
| Orientation | Rear |
| UPC | 686226213518 |
| Vehicle Service Type | RV |
N**S
It actually works
It actually works I seen lots of reviews on this people saying it dont work I decided to try it and it works What I end up doing is sanding the contacts of the defroster terminal that came off the window and on the window it self and clean the contacts where it was mounted on the windshield then use the wipe it give you the activator wipe the contacts and the part on the glass wait 1 min while your doing that mix the solvent until it get like a brownish color then put a couple drops of the on the contacts and hold it onto the window for 2 min or so then let it cure 24 to 48 hours then you can use your back defrost again.
F**K
FOLLOW THE INSTRUCTIONS - SOLID FIX
Followed the instructions and the tab is very secure. Tested the heating element and it is working. I would bet that negative reviews are coming from people THAT DID NOT FOLLOW THE INSTRUCTIONS. BETCHA!! Will see if this fix lasts......for now it is solid.
R**1
Does not work.
Meticulously followed the instructions, waited 2 days just for good measure, tab still came off. This is garbage, don't waste your money, this is $15 garbage.
K**O
A superior window defroster tab adhesive
**Review: Permatex 21351 Electrically Conductive Rear Window Defogger Tab Adhesive** As an automotive enthusiast with a penchant for DIY repairs, I recently had the opportunity to test out Permatex's 21351 Electrically Conductive Rear Window Defogger Tab Adhesive. Let me tell you, this product exceeded my expectations in every way. First and foremost, the adhesive's conductivity is impressive. It forms a strong and reliable bond between the defogger tab and the rear window, ensuring optimal electrical connectivity. This means that once applied, I can trust that my rear window defogger will function flawlessly, providing clear visibility during inclement weather. Furthermore, I was impressed by the ease of application. The adhesive comes in a convenient tube with a precision applicator tip, allowing for precise and controlled dispensing. This made it easy to apply the adhesive exactly where needed, without any messy drips or spills. One of the standout features of this product is its durability. Once cured, the adhesive forms a strong and flexible bond that can withstand the rigors of everyday driving. Whether facing extreme temperatures, moisture, or vibrations, I have full confidence that the bond will remain intact, providing long-lasting performance. Additionally, I appreciated the versatility of this adhesive. While specifically designed for rear window defogger tab repair, I found that it could also be used for other electrical connections within the vehicle, such as repairing wiring harnesses or securing electrical components. In conclusion, Permatex's 21351 Electrically Conductive Rear Window Defogger Tab Adhesive is a game-changer for automotive enthusiasts and DIYers alike. With its impressive conductivity, ease of application, durability, and versatility, it's a must-have for anyone looking to tackle rear window defogger repairs with confidence. I can wholeheartedly recommend this product to anyone in need of a reliable and effective adhesive solution for their automotive electrical needs.
J**R
? ok
expensive, took a long time to dry, does not seem like it worked. instructions were clear. unknown how long it will last.
S**E
It works very good if you follow given instructions
Let me start with saying that regardless of what are some bad review, it works and it worked very nice for me! Obviously you need to take care of the surface by cleaning it. Follow the simple instructions exactly as they say, and you won’t regret this product! Applied activator after having cleaned surface and the lil connector that need to be stick to rear windshield, let it dry a while (5min), apply conductive glue to part and keep it for a 1min. It worked even though in a vertical position and gravity didn’t bother glue and was perfectly stuck! After 24h it should be fine to use, I personally waited more before using the rear windshield heater. Very nice and good product! Will add some photo, and trust me some idiot before soldered that connector and that’s why it came off and I had to clean the part with a solder to clean it properly from tin soldering residue. Anyway it was easy to use as well and functional, it’s already been 2 weeks and still fine. Will post photos.
D**N
Does not work very well
Followed instructions very carefully. Lasted about a month and that was it
K**H
It works instead of going to the dealer or glass place
So far working great 👍🏿
A**O
Jeep Liberty 2005 desempañador
Funciona muy bien se reparo un Jeep Liberty 2005 el cual se habia desprendido el conector del cristal trasero desepañador, muy facil de usar
J**Y
Product nooit ontvangen
Bestelling door jullie geannuleerd, zonder opgave van reden... dus product nooit ontvangen!!!
B**E
Nickel
Fonctionne super bien j'ai réparé la prise de dégivrage arrière sur ma 206 RC sans probleme.
M**A
Klej konektora
Nie polecam nie czymś się szyby odlatuje
P**O
No funciona
Una recepción. Se han seguido las instrucciones al pie de la letra y no pega. El adhesivo parece que está mal. Dinero tirado
Trustpilot
2 weeks ago
1 week ago