Description:
About this item:
Experience the ultimate solution to coolant leaks with the K-Seal ST5516 HD, a multi-purpose, one-step permanent coolant leak repair. Our powerful formula works seamlessly with all antifreeze, making it a universal fit type for all your needs. No need for draining or flushing your system. This heavy-duty sealer was designed specifically for HGVs, tractors, heavy plant and other commercial vehicles. The K-Seal ST5516 HD, also known as a head gasket stop leak, works by sealing leaks efficiently and permanently. It also doubles as a radiator stop leak, effectively putting an end to any leaks in your radiator. The permanent leak sealer is easy to use - just shake, pour, and go. This product excels in fixing cracks and leaks in several components including the radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing, and engine blocks. With a single 8 fluid ounce bottle of our coolant leak sealer, you can treat up to 20 quarts cooling capacity. This heavy duty stop leak sealant is a must-have for all your coolant leak issues. So, forget your coolant leak worries with the K-Seal ST5516 HD. Experience the power of a seal stop leak that stops leaks permanently, offering peace of mind and extended life for your vehicle's cooling system. Trust the K-Seal coolant leak repair for a lasting solution to all your coolant leak problems.
Review:
4.3 out of 5
86.15% of customers are satisfied
5.0 out of 5 stars It works for small cars too
(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Used it on my 2004 malibu.I used half a bottle.Works great !!! I was shocked.The Car had water squirting out of the tail pipe every time you revved the motor...like alot.I shook it up and poured have into an empty water bottle then poured it into the hose that goes to the overflow. I didn't drain the antifreeze.It worked so fast I didn't belive it...But the car only has 78,000 or so miles so it shouldn't have had any problems that soon.So maybe the hole was small.Either way I'm super happy.3 weeks later it's still going.Oh yeah. And 3 weeks ago I failed my visual inspection while getting it smogged.I'll update ones I take it back.
5.0 out of 5 stars It worked!
I bought this larger size because I wanted to use it in two different vehicles. I put the majority of it in a vehicle that I needed to add antifreeze every couple days and was blowing white smoke out the exhaust. I no longer need to add antifreeze and there’s no white smoke. The other vehicle I needed to add antifreeze maybe once a week. I added the lesser portion to this vehicle and it is not used any antifreeze since.
5.0 out of 5 stars This stuff WORKS
The stuff really works. My F350 powerstroke had a leaking water pump after 266000 miles. It was leaking like a sieve. Poured the K-Seal in, leak slowed up within a minute, totally stopped after 5. I totally impressed with this product. I never write reviews, only if the product works better than expected or if the product is junk. 5 stars for K-Seal.
4.0 out of 5 stars pretty good at sealing stuff, even your heater core
I bought these to use on my 2011 f350 diesel with a leak on one of the front seals behind the water pump, if I wante to fix it right I would have to take the whole front end of my truck, fan, water pump, and even the front crank cover, no way,, so I bough this mainly because the manufacturer stated that this were permanent, not temporaty fixes, so Bought it, pour just half the bottle and wow! it stoppe, I was impress, but then a cold front arrived and neded to use my heater (wich I just replaced last winter with an OEM heater core) and bam!!! mildy warm air was comming out of the vents, so.... I guess i will now have to replace the heater core wich I can do in about 5 hours (take center console out, and then dash and it literally takes less than 5 minutes to take the old heater core out and put the new one in) I guess is better that taking the front endwhat I would do different now it would be using this product and then cutting my heater core lines and splicing then togheter to bypass my heater core, let this stop leak do the magic and then flush the old coolant, put new one in and then connect back the heater lines
5.0 out of 5 stars The only cooling system sealant to trust
Flush cycle and then back in with this product and water and then dump that water out to be able to put coolant back in it to be able to put it back in the service and a you know winter time scenario or summer to Winter scenario this stuff you just poured in and let it do its job and you're done you don't have to drain the coolant out you don't have to go through a big process of it throw it in there let her idle for a while they're back in service and go to work make some money and stuff keeps equipment and stuff operating when you don't have a chance to take it down or take it out of the field for a while and it'll get you by or it'll work as a permanent fix I wish I could get buy stocking in this stuff
1.0 out of 5 stars Don't buy it!
It will clog your system, it did it to my semi Volvo VNL670, stay out of this thing!
5.0 out of 5 stars Great product, works as advertised for slow coolant leak!
Works as advertised, fantastic product. Succeeded where Bar’s Leaks failed. 1990 F250 w/460 and constant coolant leak front of head below thermostat. Stopped leak within 5 minutes of adding product to radiator. Would definitely purchase again
5.0 out of 5 stars Fast shipping
Product works as advertised 👍🏽🏆🔥🔥🔥
This bar none the best stop leak
(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } I have 2015 long nose Peterbilt. Had a slow cold leak from the bottom of the radiator (only would leak as the engine cools down) then I would have to add about 1 litre of coolant the next morning. After I added this product a few weeks ago, I’ve added nothing and the coolant level is still at the top. Excellent quick fix rather than new radiator.
Very effective with intake gasket coolant leak
I had an unsatisfactory result with one of my cars I earlier reviewed. However, I had a visible gakset leak between the plastic intake manifold and cylinder head in 2007 Town Car, and was about to remove it for servicing until I thought, let me give K-Seal another shot since I had a small quantity left. The result was magic! The leak is gone, and been running dry and clean for a month now.
It really worked and saved a lot of money
There was a crack in head gasket of my car and coolant was leaking from there. Results in engine overheating.I added Kseal HD in in coolant and I had driven 5000 KM after that and crack is healed hence no overheating.Authorised service centre had asked to change the head gasket , that could have costed me around Rs. 75000.Local mechanic suggested to weld the crack. That too have costed around Rs. 20000.But Kseal costed me only Rs. 3500.And it really worked for me.
Gran sellador
Funciona y es fácil de usar
No use for coolant pump mild leaks
It s not sealing coolant pump mild leaks.. I can only seal radiator leaks, not in other places- saying by my own experience.. if coolant pump leaks, u better repair it instead of wasting on it..
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K-Seal ST5516 Heavy-Duty Multi-Purpose One Step Permanent Coolant Leak Repair, 16 oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
BHD14550
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Free delivery on orders over BHD 20
Product origin: United States
Electrical items shipped from the US are by default considered to be 120v, unless stated otherwise in the product description. Contact Bolo support for voltage information of specific products. A step-up transformer is required to convert from 120v to 240v. All heating electrical items of 120v will be automatically cancelled.
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