Top 9 Kseal Coolant Repair – Cooling System Additives

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1. K-Seal

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Heater Core, Block, Water Pump Casing, and Freeze Plug, Trade Trusted-Stop Leak, K-SEAL Coolant Leak Repair, Head Gasket, ST5501 8oz, Multi-Purpose Formula Stops Leaks in the Radiator, Pour and Go

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K-Seal #ad - The only car radiator and gasket sealant university tested to meet ASTM D3147. Scientifically tested: safe and effective, the repair withstands the high pressure of the combustion chamber, our cracked block repair can seal leaks up to 1/32 of an inch! Once cured, all without failing or clogging the cooling system.

Over 8 million bottles sold worldwide! Repairs in minutes: formulated to permanently weld radiators, including hard plastic aluminum heads and blocks in old and new cars. Us bestseller. Check the technical Specification section of this page for extra instructions for a successful repair. Customer support: if k-seal engine coolant leak stop doesn’t seal, the system might be over-pressurized. Pour and go: our cooling system sealer is easy to use: just shake the bottle, add to your radiator/overflow and run the engine! Unlike some traditional products, it mixes with all types of antifreeze, absolutely no draining or flushing required.

Save time/money. Seals cracks and stops leaks: a diy alternative to costly repairs, freeze plug, our coolant leak fix permanently seals cracks and holes! It quickly repairs your leaking radiator, heater core and water pump casing with no adverse impact on efficiency.
BrandK-Seal #ad
ManufacturerK-Seal #ad
Height6 Inches
Length7.87 Inches
Weight0.6 Pounds
Width2 Inches
Part NumberST5501
ModelST5501
WarrantyWhen K-Seal makes a repair we guarantee it will be permanent

2. K-Seal

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Water Pump Casing & Heater Core, Head Gasket, K-SEAL Coolant Leak Repair ST5516 Heavy Duty 16oz, Multi-Purpose Formula for Truck/Tractor Coolant Leaks in the Radiator, A True Pour & Go -Trade Trusted

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K-Seal #ad - Save time/money. Customer support: if our engine coolant leak doesn’t seal your head gasket, the system might be over-pressurized. Check the technical Specification section of this page for extra instructions for a successful repair. Us bestseller. The only industrial coolant sealant university tested to meet ASTM D3147.

Repairs in minutes: create a permanent weld within the entire coolant system, AG, including on hard plastic radiators and aluminum heads and blocks in larger capacity engines, RV etc. Scientifically tested: safe and effective, our heavy Duty Coolant stop leak repair seals leaks up to 1/32 of an inch! Once cured, it withstands the high pressure of the combustion chamber, without failing or clogging the cooling system. Pour and go: our cooling system sealer is easy to use just shake the bottle, no draining, it mixes with all types of antifreeze, add to your radiator/overflow and run the engine! Unlike some competitive products, flushing or pulling the thermostat required.

Seals cracks and stops leaks: avoid expensive downtime, freeze plug, leaking radiator, block, our coolant stop leak will permanently seal cracks and holes! Quickly repair your head gasket, heater core & water pump casing with no adverse impact on efficiency. Over 8 million bottles sold.
BrandK-Seal #ad
ManufacturerK-Seal #ad
Height1.9 Inches
Length5.9 Inches
Weight1.2 Pounds
Width4.1 Inches
Part NumberST5516
ModelST5516
WarrantyWhen K-Seal makes a repair we guarantee it will be permanent

3. K-Seal

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K-SEAL Ultimate Permanent Head Gasket Repair ST3501 16oz Multi-Purpose Formula Stop Leaks in the Head Gasket, Trade Trusted Stop Leak, Radiator & Heater Core. A True Pour & Go, Cracked/Porous Blocks

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K-Seal #ad - Over 8 million bottles sold. Us bestseller. Save time/money. Repairs in minutes: permanently fix blown head gaskets, cracked heads and cracked/porous blocks including aluminum heads in old and new cars. Pour and go: our head gasket sealer is easy to use just shake, absolutely no draining, add to your radiator/overflow and run the engine! Unlike some competitive products, it mixes with all types of antifreeze, flushing or pulling the thermostat required.

Seals cracks and stops leaks: a diy alternative to costly repairs, our head gasket fix permanently seals cracks and holes! Quickly repair your blocks, leaking radiator, freeze plug, heater core and water pump casing with no adverse impact on efficiency. Check the technical Specification section of this page for extra instructions for a successful repair.

Scientifically tested: safe, the repair withstands the high pressure of the combustion chamber, our head gasket and block repair seals leaks up to 1/32 of an inch! Once cured, effective, all without failing or clogging the cooling system. The only head gasket and block sealant that is 3rd party tested to meet ASTM D3147. Customer support: if our head gasket repair leak doesn’t seal your intake gasket, the system might be over-pressurized.
BrandK-Seal #ad
ManufacturerK-Seal #ad
Height8 Inches
Length2.5 Inches
Width2.5 Inches
Part NumberST3501ND
ModelKSLST3501
WarrantyLifetime warranty does not cover abuse

4. Bar's Leaks

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20 oz., Bar's Leaks 1100 Head Gasket Repair

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Bar's Leaks #ad - Repairs blown head gaskets. Included components: Unit, Instruction Guide. Stops block leaks. Head gasket sealant is not compatible with antifreeze and must only be added to the cooling system after ALL ANTIFREEZE has been flushed and removed. Dual action 2 part formula — liquid ceramic: liquid penetrates large and small leaks to form a seal actually harder than the original head gasket — REINFORCED FIBERS: Fiber additives lock together with liquid to increase strength and promote a permanent seal. Seals cracked cylinder heads and blocks.
BrandBar's Leaks #ad
ManufacturerBar's Leaks #ad
Height8.3 Inches
Length1.8 Inches
Weight1.5 Pounds
Width3.4 Inches
Part Number1100
Model1100
Warranty1 year manufacturer

5. Bar's Leaks

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Bar's Leaks Cooling System Repair, 16.9 oz

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Bar's Leaks #ad - Premium carbon fiber formulation for extended protection. Compatible with all brands of anti-freeze including conventional green or blue and extended life red/orange or yellow OAT/HOAT coolant. Stops cooling system leaks.
BrandBar's Leaks #ad
ManufacturerBar's Leaks #ad
Height8.4 Inches
Length1.8 Inches
Width3.6 Inches
Part Number1150
Model1150
WarrantyNo

6. Engine Ice

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0.5 Gallon, Engine Ice TYDS008 High Performance Coolant

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Engine Ice #ad - Easy to use – premixed with deionized water for out-of-the-bottle use. Engine ice hi-performance coolant is biodegradable, phosphate free and non-toxic, typically reduces operating race temperatures and effectively keeping boil over temperatures to 256° Fahrenheit or less and freeze-up protection to -26° Fahrenheit.

Engine ice hi-performance coolant is legal in ccs and ASRA road racing and permitted at many tracks around the world. With an average reduction in operating temperatures of 10° Fahrenheit - 20° Fahrenheit Engine Ice is perfect for racing or street, motorcycle or auto, ATV or snow machine.

Uses propylene glycol, which has been proven to eliminate water pump gasket and seal failures; it has also shown in high load, high stress conditions to reduce operating temperatures more than standard coolants. Engineered to keep your operating temperatures at optimum performance to not lose power through excess heat; Engine Ice is safe for aluminum and most all metals.
BrandEngine Ice #ad
ManufacturerEngine Ice #ad
Height3 Inches
Length9 Inches
Weight4.3 Pounds
Width6.2 Inches
Part NumberTYDS008
ModelTYDS008

7. Thermocure

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Safely Removes the Rust from Cars Cooling System, Thermocure Coolant System Rust Remover, 32 oz Bottle

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Thermocure #ad - Thermocure uses the latest technology in rust and corrosion removal to totally revitalize automotive cooling systems. Therocure by evapo-rust, cures engine overheating by removing the rust from your cooling system! Thermocure restores the engine ability to transfer heat to the coolant allowing engines to run cooler and last longer.

Non-toxic biodegradable non-corrosive safe on skin and eyes No fumes or bad odors Contains no acids, wood, rubber, or VOCs Safe on other metals, solvents, bases, plastic, and glass. Thermocure removes rust scale and deposits from radiator, water pumps, water jackets, and engine blocks and heads.
BrandThermocure #ad
ManufacturerThermocure #ad
Height3.07 Inches
Length0.98 Inches
Weight2.7 Pounds
Width2.24 Inches
Part NumberTC001
ModelTC001

8. Bar's Leaks

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Bar's Leaks 1186 Liquid Aluminum Stop Leak, 16.9 oz

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Bar's Leaks #ad - Seals radiator leaks. Special shipping information: This item cannot be returned and has additional shipping restrictions. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Bar's leaks liquid aluminum stop leak seals radiator leaks. Lowers water temperature. Repairs gasket leaks. Seals freeze plug leaks.
BrandBar's Leaks #ad
ManufacturerBar's Leaks #ad
Height7.4 Inches
Length2.6 Inches
Weight1.2 Pounds
Width2.6 Inches
Part Number1186
Model1186
Warranty1 year manufacturer

9. J-B Weld

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J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste, 3 oz

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J-B Weld #ad - Simple to use: when fully cured, small gaps, machined or sanded. Versatile & dependable: ideal for repair work on : exhaust manifolds, catalytic converters, pipe connections, fire boxes, mufflers, outdoor grills, gas and commercial furnaces and water heaters.

Our heavy duty adhesives repair & restore it right the first time. Do it yourself: big or small, you can diy it with j-b. It is great for repairing cracks, this metallic compound can be drilled, seam connections or holes. The original cold weld: jb weld was developed as an alternative to torch welding. Jb weld delivers the legendary performance of the World's Strongest Bond.

Jb weld extreme heat: is formulated for repairs to iron, steel and metal in high temperature environments-2400°F / 1300°C. Non-flammable, it contains no solvents or Volatile Organic Compounds VOCs. Designed to be effective in extreme environments, once it sets, it creates a permanent bond stronger than steel.
BrandJ-B Weld #ad
ManufacturerJBWeld #ad
Height2.05 Inches
Length1.57 Inches
Weight0.19 Pounds
Width1.57 Inches
Part Number37901
Model37901
WarrantyNo Warranty