Name: K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
Brand: K-Seal
SKU: 5YVEFMOL00X1
Availability: OutOfStock
Rating: 4.3 (639 reviews)

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K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair

Brand

Color

Container Type

Size

K-Seal 8 fluid ounce bottle is effective to 20 quarts cooling capacity. Just shake, pour and go. It repairs leaks and cracks in radiator, head gasket, heater core, freeze plugs, water pump casing, cylinder heads and engine blocks.

Manufacturer Part Number

Model

Universal Product Code (UPC check)

Leak

Ease Of Use

Instructions

Radiator

Price

Engine

Seal

Following

Mixing

Antifreeze

Smell

Pouring

Package

Drip

Okay hear me out (I'm still in disbelief)!!!! I have a 2017 Lincoln MKC Reserve and my engine light has been on since late last year. I took my car to the shop (not dealer) and was told it was best for me to get a smoke test ($100). I was then told my purge valve needed to be replaced (part $214 dealer and $105 install fee from shop), light came back on a week later. Took my car back and was told I needed a tuneup (just had one last year, but okay ($260), like comes back on two weeks later. Now I'm fuming!!! Back to the shop to be told my coils needed to be replaced $325! Yep you guessed it… light back on a few weeks later! I called the shop heated to be told there's nothing else they could do! Ugh!! Anywho, I'm researching possible issues and solutions, when I came across this product! I was skeptical but for $11 it was worth it! I'm still in disbelief!!! My son put it in my coolant reserve, I followed the directions and two… YES 2 days later I get in my car and No Engine Light!!!! I'm going to buy one more and do it again next month!!!!

walmart.com

The absolute best product. Used in a 2014 Toyota Prius that had really bad valve cover leak.  The car would shake horribly and the repair shop said it would cost thousands to fix.  Put it in and with in 30 minutes there wasn't any hesitation. Radiator fluid levels remained the same.  It's been several weeks and still running fine with 240000 miles on it.

I was loosing antifreeze every week I had to check and refill my radiator. About a gallon a week. It was leaking from the head gasket, but there was no smoke. I used the K seal head gasket repair and it worked perfectly. This is a good product and really works. I highly recommend it.

K seal head gasket repair

This stop leak is simply amazing! I have a 2002 Ford Expedition with 170000 miles on the motor and the rubber gasket on top of the intake manifold was leaking where the coolant enters. I followed the instructions on the product and it stopped that leak almost instantly. I let the product circulate through the cooling and heating system and it's been a few months now and no coolant leak anywhere. This saved me hundreds of dollars in cost to replace the rubber gasket on top of manifold. I highly recommend this product.

I have had a leak in my heater core and tried various stop-leak brands. They all stopped the leak but then clogged my heater core. When I'd blow the clog out it would leak again. This product didn't do that. It just stopped the leak. I will buy other products from this company as needed.

Worked For Me!

Bought it to stop a drip from the heater core. The entire floorboard had water under the carpet. It was a mess. Cleaned up the mess and put the K Seal small bottle, 8 oz. in the radiator. Ran the Highlander for 1 hour and the drip stopped. It has been over 1 month and still no leak. Highlanders have a known issue with leaks around the top of the radiator and ours had begun to be wet on top in one corner. After K Seal the area was dry. So far so good.

Works and quickly

Does exactly what it says it does.  It works.  The moment you start smelling anti-freeze or see any sign of over-heating you might want to think about using this product.  Then add fresh antifreeze.  Nice cheap fix.  Finds the leaks and patches them.

It just works!

I used this for a possible head gasket leak in my Dodge Dakota, milky dip stick and water dripping from muffler seem.Changed oil and filter then added k-seal let it idle around 20 minutes and the next day no smoke,milky dip stick or leaking seem ,it's been over a weak and still good..I would give it a try for the price and hasn't clogged radiator or anything up..Temp fix but works!

I bought this product for my friend as he has a 1988 mercury Colony Park station wagon, and the heater core had a slight leak. After adding this product it sealed it. It has stopped leaking and he is down the road now worry free. The product does exactly what it says. It will do.

EXCELLENT PRODUCT, “IT WORKS”!

Ive used this at least 50 times.It works in most cases.NO chemical will repair ALL Head gaskets and coolant leaks.Even the very expensive labor intensive ones.I find this to work in most cases of small to moderate leaks. Products that "block up" large leaks also block up raditors and heater cores creating more problems.

Works in most cases

Real talk it garbage DONT buy doesn't work and will have you stranded it DONT seal or stop leaks I know first hand Don't buy this product is  a fraud and scam you be mad