Price: $8.85

Loctite Rear Window Defogger - Tab Adhesive - 0.03/0.02-Fl Oz Kit

Item # LT21351

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loctite tools  rear window defogger - tab adhesive 0.03/0.02-fl oz kit
loctite tools adhesives and sealants rear window defogger - tab adhesive 0.03/0.02-fl oz kit

Customer Photos

loctite tools adhesives and sealants lt21351

  • Adhesives and Sealants
  • Repair Kit
  • Loctite
  • .03 Oz
This rear window defogger tab repair kit allows anyone to reconnect a detached or broken rear window defogger tab to its grid easily and inexpensively. Specially formulated glue conducts electricity. Lowest Prices for the best tools from Loctite. Loctite Rear Window Defogger - Tab Adhesive - 0.03/0.02-Fl Oz Kit part number LT21351 can be ordered online at or call 800-298-8924 for expert service.

Loctite Tools - LT21351

This rear window defogger tab repair kit allows anyone to reconnect a detached or broken rear window defogger tab to its grid easily and inexpensively. Specially formulated glue conducts electricity.


  • Anyone can fix a detached rear window defogger tab
    • Easy-to-use kit simplifies repair
    • Inexpensive - saves the cost of having a shop perform the repair
  • Glue is specially formulated to conduct electricity
  • Instructions included
  • Made in the USA


  • Quantity: 1.48 mL
    • 0.03 fl oz Adhesive and 0.02 fl oz Activator

Process summary:

  1. Remove wire from tab; then clean tab and attachment area on rear window with rubbing alcohol
  2. Apply activator to tab and attachment area
  3. Allow 5 minutes for activator to cure and then apply glue to attachment area
  4. Push tab onto attachment area, hold in place for 1 minute and then reattach wire
  5. Wait 24 hours before using defogger


  • To work best, glue must be applied when temperature is between 50 F and 75 F
  • Alcohol required to remove old glue

21351 Loctite Rear Window Defogger Tab Adhesive

Customers Who Purchased This Tools Also Bought...

Customer Reviews

Loctite Rear Window Defogger - Tab Adhesive - 0.03/0.02-Fl Oz Kit - LT21351

Average Customer Rating:  4.1 out of 5 stars   (39 Customer Reviews)

This rear window defogger tab repair kit allows anyone to reconnect a detached or broken rear window defogger tab to its grid easily and inexpensively. Specially formulated glue conducts electricity.

- LT21351

by: ACDR5408/19/2013

Used the tab adhesive kit as directed and was very easy to apply. Waited the 24 hours as recommended and was a success. Defogger worked very well with a little dew on the glass this morning. It may take another month or two down here in Louisiana to get a good test on the final result but I have faith all will be well. Thanks to I probably would not have found a DIY product locally. 95941


Worked well for a while and then suddenly stopped working. Used some leftover grid repair compound to encircle the tab on the glass and has been working fine. Cant explain why it quit. If it quits working again, Ill just use solder.

ACDR54 - 02/17/2015


- LT21351

by: John C. Jorda12/05/2013

This is the second product I purchased to fix my tab which detached from my rear window defroster. The first product, a well known brand, cost three times as much as did not work at all. This product had easy to follow directions, took six minutes to complete and works great. I would highly recommend this for anyone who needs to reattach the rear defroster tab on their vehicle. It was cold when I used this product so I did warm the window with a hair dryer. Product was shipped quickly and received in just a few days. Thank you!! 109178

- LT21351

by: Roger S11/04/2014

Product worked great. Ordering was easy. Delivery was fast! Great company to deal with. Will definitely be purchasing from again! 159052


Still working!

Roger S - 11/04/2015


- LT21351

by: Tyson H.01/16/2014

Great product, easy to use! Make sure you follow the instructions exactly though! I installed during the Winter in about 35 degree temperatures, so I used a hair dryer to heat the contact points and the product before applying. One other thing I ran into, was the defrost tab not sticking to the window surface initially. I realized that my tab was bent slightly, and not making a solid contact. Make sure you clean both surfaces very well with alcohol as directed (I even sanded the tab a bit to get ALL residue off), and if your tab is bent slightly (like mine was), make sure it is completely flat before installing. 113952

- LT21351

by: John H03/17/2014

So far so good still attached to rear window defogger quick shipping and great follow up from etrailer 120956


Still working

John H - 03/17/2015


- LT21351

by: Eric10/20/2016

Although its a great concept to be able and repair defroster grid lines or re-attach the connector to the grid, it didn't work for my 2002 Tahoe (made the adhesive connection but not the electrical)-and many online forums and my mechanic said the same thing. Basically you usually have to buy a whole new rear glass. I guess this is worth a shot but don't count on it. 309105

- LT21351

by: Paul P.10/27/2014

A little hard to control the packet when dispensing the adhesive, but all in all a good product. Had to redo the repair after the Permatex product I originally used lost electrical continuity. Apparently this adhesive has maintained the conductivity after drying, checked with an ohm meter 24 hours after application and still showing connected circuit. 157983

- LT21351

by: Bob10/25/2015

Product was pretty straight forward to use. Make sure the temperature is appropriate and clean the area and the tab with rubbing alcohol prior to using the product. I just reattached a couple of days ago and it seems to be holding up ok, but the real test will be if it stays connected months from now. 230761

- LT21351

by: Patrick01/20/2014 did a great job all through the buying process! They emailed me every step of the way. I have used them in the past and will continue in the future. I have not had time to use the product yet, but you cannot go wrong with Loctite and had the best price and lowest shipping!! 114236

- LT21351

by: Gordon04/09/2017

Product is exactly as described. And it did a perfect repair to my grid connectors. The company E TRAILER was especially helpfull following the transaction from start to finish. Shipping was very fast. I am very happy with this company. 364836

- LT21351

by: sheila03/19/2013

I just used it last week and it seems to be working great. It was easy to apply but a little tricky to use in the winter. I had to use a lamp to keep the window warm enough. Your company was very easy and helpful to order from. 71592

- LT21351

by: DAVID A.10/09/2014


- LT21351

by: K. Molever05/10/2011

Tab Adhesive Product actually worked, and well, as you only get one try for this. good thing, I work for a sister company of Loctite. And couldn't find this in ANY local parts store. 13184

- LT21351

by: Paul V.12/28/2013

Followed instructions carefully and it did not work. It's garbage! etrailer shipped it quickly and they are great... but this particular product is a waste of time and money. 111375

- LT21351

by: CynthiaD.11/05/2014

So far so good. The product was easy to use and fixed my Rear Defogger. I haven't used the defogger as of yet, but so far the product is holding together. 159555

- LT21351

by: Constantine01/21/2013

I had a problem making it stick. I followed all of the directions. Maybe the tempurture was not right. It was about 46F. Thanks anyhow I just soldered it. 63670

- LT21351

by: Ralph B12/26/2016

This product works great. For the ten dollars and the ten minutes it takes, it is well wiliest it. Very easy to use. Follow instruction on package. 328001

- LT21351

by: t.o.09/16/2013

it certainly bonds the defogger and the terminal. instruction and the components seem better than permanex kit. not to mention cheaper too 100249

- LT21351

by: Tim Brandes12/16/2016

The adhesive adapter works great and it was delivered on time and in great condition! Couldn't have asked for a better experience. 325493

- LT21351

by: Gordon G.04/17/2013

Excellent product from a reliable source. Easy to use and much more inexpensive than a complete replacement. 76490

- LT21351

by: Chris B.11/18/2013

Great product. Price was very reasonable and the time frame from ordering to delivery was A-OK!! Thank you 107772

- LT21351

by: Mark06/04/2015

I not had the opportunity to use the product yet. I hope that everything works out. 200618

- LT21351

by: David M.12/17/2016

a little difficult to get at the contact but worked well with proper peparation 325821

- LT21351

by: Gordon G.10/31/2012

Great product at an excellent price. Easy to use if you follow the instructions. 58451

- LT21351

by: Kimberly S.12/23/2013

Clear instructions, easy to use, so far so good my rear defogger now works! 110911

- LT21351

by: John L01/26/2016

The last 3 packages of these I have ordered from you do not hold. 236281

- LT21351

by: Jerry S.10/24/2016

Worked a couple of times, not very well. Then failed completely. 310062

- LT21351

by: Rob02/28/2017

Does not create a circuit, so defroster still will not work. 346709

- LT21351

by: James S.02/11/2013

Quick delivery and product is what I was looking for. 65795

- LT21351

by: Ed F.11/30/2013

It didn't work. I followed directions to the T 108747

- LT21351

by: Brandon M02/21/2014

Works as advertised. Fast delivery as well 117163

- LT21351

by: T. Carroll12/13/2016

Product delivered on time and intact. 324579

- LT21351

by: Robert02/18/2013

Got it. Worked perfectly. Thanks. 66835

- LT21351

by: Kathy L.11/03/2014

Excellent service. Fast delivery! 159013

- LT21351

by: Terry01/21/2014

Product work as descripbe Thanks 114327

- LT21351

by: Krzysztof01/27/2014

Excellent product 5 star 114940

- LT21351

by: John D.08/10/2013

Great Product 94379

- LT21351

by: WallyB12/16/2016

Excellent 325414

- LT21351

by: ahren c11/18/2013

Good 107721


Ask the Experts about this Loctite Tools
Do you have a question about this Tool?

  • Loctite Rear Window Defogger Recommendation for Reconnecting Rear Window Defogger Tab
  • This Loctite Rear Window Defogger Tab Adhesive # LT21351 that you referenced should work well for your application. This product will work to reattach defogger/defroster tabs on rear windshields of vehicles. The heating element that runs through rear windshields is usually referred to as a defogger as it is generally more efficient at removing fog than removing frost. But either way it will work for you to reconnect the tab that is broken on your vehicle. Especially when it comes...
    view full answer...

  • Repairing Detached or Broken Rear Window Defogger Tab
  • Loctite Rear Window Defogger - Tab Adhesive # LT21351 is going to work well for you. Loctite knows how to make some adhesives so it is not likely you will run into the same issue as you did with previous repairs. Be sure to follow the instructions for the best results: 1.Remove wire from tab; then clean tab and attachment area on rear window with rubbing alcohol 2.Apply activator to tab and attachment area 3.Allow 5 minutes for activator to cure and then apply glue to attachment area 4.Push...
    view full answer...

Do you have a question about this Tool?

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Info for this part was:

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Written by:
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Expert Research:
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Updated by:
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