Search  for anything...

Kuject 270PCS Solder Seal Wire Connectors, Self-Solder Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Stereo Wire Joint

  • Based on 38,890 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Nov 23
Order within 4 hours and 5 minutes
Available payment plans shown during checkout

Size: 270PCS


Features

  • Cost-effective Choice: Super - capacity package includes 60 White, 100 Red, 90 Blue, 20 Yellow
  • Time Saver: Solderless & Crimpless, all you need is just a heat gun to finish the connection, much faster and easier than the old way.
  • Better Waterproof and Seal Performance: There is two hot melt waterproof adhesive rings in each butt connector, which help it hold up better to moisture.
  • Fit for Confined and Narrow Spaces: Can be bent after connection and no need to crimp or solder in the confined area, just control the temperature via a heat gun.
  • IATF16949:2016 Listed: The Kuject solder seal connectors meet the newest standard of International Automotive Task Force, which is the most standardized way for you to repair or modify your car.

Color: RED BLUE YELLOW WHITE


Gauge: 10,12,14,16,18,20,22,24,26


Connector Type: Butt Splice


Contact Material: Tin


Insulation Material: Polyethylene


Product Dimensions ‏ : ‎ 9.96 x 7.09 x 0.63 inches; 8.11 ounces


Item model number ‏ : ‎ WT270


Date First Available ‏ : ‎ October 18, 2019


Manufacturer ‏ : ‎ Kuject


Country of Origin ‏ : ‎ China


Best Sellers Rank: #247 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #2 in Butt Terminals


#2 in Butt Terminals:


Customer Reviews: 4.5 4.5 out of 5 stars 38,890 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Wire Splice Kit
Size: 160PCS
After using crimp-style butt connectors for many years, I decided to give these a try. I am impressed! They are incredibly easy to use, and worked perfectly the first time. I have a small heat gun that I bought for use with surface mount devices on circuit boards, and it really does the job with these connectors. You just slide a connector over one of the wires, strip the ends of the two wires to be joined, bend the stripped ends into hooks and twist them together, slide the connector over the joint and apply heat. The solder quickly melted, and the tubing shrank down over the wires while the sealer also melted, sealing the joint. Quick, easy and permanent. Highly recommended! ... show more
Reviewed in the United States on February 22, 2024 by wadny

  • Revolutionary
Size: 400PCS
These are incredible. I have used these now for multiple applications, from a car to sprinkler wires to vending machines. Just carry a heat gun and short extension cord for most places and you're set. You do strip the wires farther than you usually would with a crimp. The only thing I will say somewhat as a warning is that they work way better with stranded wire than solid wire. I have had a couple instances where solid wire pokes a hole in the coupler and I have to start over. Other than that, these are easy to use, guarantee a solid connection, go waterproof, and make it so that the connection isn't a massive piece of plastic that you will be able to see even under shrinkwrap. If you cover the wire with shrinkwrap afterwards, you won't even notice that there is a splice in the wire ... show more
Reviewed in the United States on December 27, 2023 by Josiah Volz

  • THE JURY IS STILL OUT
Size: 200PCS
I THINK THESE WORK PRETTY WELL. YOU HAVE TO BE VERY SPECIFIC WITH THEM. I AM NOT SURE HOW MUCH THE SOLDER MELTS WITH A HEAT GUN. SLIDE THE UNIT ON WIRE**TWIST THE WIRES TOGETHER**SLIDE THE UNIT ON THE WIRE AND HEAT THE HECK OUT OF IT**AND OH I FORGOT YOU NEED TO PUT SHRINK TUBING ON AT THE BEGINNING SLIDE IT UP ON THE CONNECTION AND SHRINK THE HECK OUT OF IT. THE CONNECTION SEEMS GOOD AND DIFFICULT TO PULL APART. ... show more
Reviewed in the United States on January 4, 2024 by Danny R. Guill

  • Easy to use and solid connection
Size: 200PCS
Works so well I might assess my current splices and upgrade with these
Reviewed in the United States on March 6, 2024 by Glen Bachman

  • Great performance!
Size: 200PCS
Excellent wire harness repair. All in one saves time. What I like most about these is the spar they save. As a master automotive technician I find I’m repairing harnesses and getting rid of that bulk is the best feature. These are durable and work great when directions are followed. Only thing is the solder on some of the larger ones sometimes take a little long to melt. ... show more
Reviewed in the United States on February 26, 2024 by Ian D

  • Kuject 120PCS Solder Seal Wire Connectors - never knew I needed them
Size: 120PCS
I bought these after trying to rewire a trailer- replacing all of the lights. I started and got about halfway through and got sick of soldering and then using heat shrink tubes etc to join wires. I saw this product as my brother had a kit of these and it literally takes 20 seconds to not only connect wires but also watertight seal them. So far so good and my trailer is working like a charm. The first half of the trailer took me 1.5 hours, and then second half took around 15 minutes- it makes it so simple. I also installed a new car stereo in my daughter's vehicle and these were versatile enough that I could find connectors that were much smaller than what I used on the trailer wiring. I was able to join many different wires in minutes, and I am confident that it will stay joined better than the twist connectors I always used previously. You can either use these with a heatgun or a targeted lighted- but basically you have to get it hot enough to melt the solder in the middle of the connector- when that melts it creates a seal, and then the outer plastic tub shrinks to create a nice seal (also cosmetically pleasing- much more than the twist connectors.) I have seriouslly loved having these around and plan to use them consistently on my audio projects or low voltage projects in the future! ... show more
Reviewed in the United States on September 25, 2023 by Jasper_the_nightengaleBO

  • What a great product!
Size: 120PCS
Bought to repair splices on my boat, do not see how I have lived without these in my life! My recently purchased used boat has taped together wire splices all over the place that are corroding from exposure to moisture due to only being twisted & taped. Every one I find gets repaired with one of these connectors, and will not corrode again since they are now soldered & sealed from moisture. Do yourself a favor & get a mini heat gun with the heat shield for these, makes the installation super simple & quick. And the heat shield protects other wires behind the repair from a lighter flame... :-) ... show more
Reviewed in the United States on December 28, 2023 by JustaDude

  • Takes a long time to melt the solder.
Size: 200PCS
I can't compare these to other brands, but seem to take a bit of time to melt the solder. The colored rings that grip the cable jacket work very well.
Reviewed in the United States on March 10, 2024 by Kindle Customer

Can't find a product?

Find it on Amazon first, then paste the link below.