Bar's Leaks 1109 Liquid Copper Block Seal, Intake and Radiator Stop Leak, 18 oz. | One Step, Safe for All Cooling Systems
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Bar's Leaks 1109 Liquid Copper Block Seal, Intake and Radiator Stop Leak, 18 oz. | One Step, Safe for All Cooling Systems

Product ID: 9782295
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Details

  • Material
    Sodium
  • Brand
    Bar's Leaks
  • Style
    1 Pack
  • Item Weight
    18 Ounces
  • Item dimensions L x W x H
    7.5 x 2.6 x
💧No draining needed
🔧Universal coolant compatibility
🛠️Permanent leak fix

Description

🛠️ Fix leaks like a boss—one pour, permanent peace of mind!

  • SEAL LIKE A PRO - Permanently repairs leaks in engines, radiators, and cooling systems with a one-step pour-in formula.
  • SAFE SMART SOLUTION - Formulated to protect plastic, aluminum, and cast iron components without harming your cooling system.
  • STRENGTH IN EVERY DROP - Fiber additives lock with liquid copper to create a durable, long-lasting seal that outperforms regular stop leaks.
  • ZERO HASSLE MAXIMUM FIX - No draining required—just add directly to your radiator and get back on the road faster.
  • ALL INCLUSIVE COOLANT COMPATIBILITY - Works seamlessly with all traditional and extended life coolants, regardless of color or type.

Bar's Leaks 1109 Liquid Copper Block Seal is an 18 oz. advanced sodium silicate formula designed to permanently seal coolant leaks in all types of vehicles. Compatible with all coolant types and safe for plastic, aluminum, and cast iron parts, it requires no draining and uses fiber additives to create a strong, lasting repair.

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Specifications

MaterialSodium Silicate
BrandBar's Leaks
Style1 Pack
Item Weight18 Ounces
Item dimensions L x W x H7.5 x 2.6 x 2.6 inches
Water Resistance LevelWaterproof
Item FormLiquid
UPC046087011096
Unit Count1.0 Count
Global Trade Identification Number00046087011096
Number of Items1
Surface RecommendationCopper
ManufacturerBar's Leaks
Item Weight1.12 pounds
Product Dimensions7.5 x 2.6 x 2.6 inches
Item model number1109
Is Discontinued By ManufacturerNo
Manufacturer Part Number1109

Have a Question? See What Others Asked

Will this help to stop a block leak where the water pump connects to the cooling system?
Can it be used on 1968 327cid for leaking freeze plug?
heater core leak fixed?
Can this help with a 5.3l gm engine with the bad cylinder head castings? i'm saving for a replacement engine, just need this one to last a while

Reviews

M**X

Good Stuff

Works well. Had to use on a brand new replacement radiator that leaked at the crimped tank seams. would use again.

B**M

Works great

Fixed leak in my radiator on older car. Much cheaper than replacing it!

D**Z

Great product

This stuff is great it sealed a bad leak that I had

P**R

Just follow directions. If you need more put a small amount in.

It may take more than one bottle. Also Its better if you don't put antifreeze if AFTER the Bars If it needs antifreeze, put in before. It is pretty good. And follow directions about letting your car run for a short time. Its all on the bottle. It works better than the "Stop Leak" by Bars.

E**N

Fixed my leaky head gasket

I started noticing drips underneath my rather old car and knew it wasn't worth fixing so i did some research and bought this. I followed the directions carefully: drain some fluid, pour this in, idle for 15 min, and let it cool. After doing so i've noticed no more drips, it's only been about a week so i'll update after a while to let you know if it really lasts but so far it's been great.One note: After running this through the system I did have to clean out the overflow cap which the product had plugged thinking it was a leak. If you notice that when the engine is cool, your radiator hose has collapsed, that indicates negative pressure in the system, in other words it's not drawing fluid from the overflow: clean out the overflow lines and you should be all set.

S**E

I was hesitant

I decided not to use it after conducting further investigations. Some people said it clogs up their coolant system causing more damage and money down the line. I decided to find the reason for the leak and was glad I did because one of my flanges was made out of plastic and it had a crack so I replaced that with metal.

S**O

I don’t like

“I tried Bar’s Leaks hoping it would fix a small coolant leak, but it didn’t work at all. The leak kept coming back after just a few days, and it even left residue in the system. It felt more like a temporary band-aid than a real solution. Honestly, I wouldn’t recommend it — better to fix the problem properly instead of relying on this product.”

A**R

Worked for my old pickup

Worked on an old Chevy luv

Common Questions

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.
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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Bars Leaks 1109 Liquid Copper Block Seal Intake And Radiator | Desertcart Tanzania