Best Coolant Leak Sealer - April 2024

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

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.

• ASIN: B001QT9KO6
• UPC: 812646010004
• ASIN: B001QT9KO6
• Brand: K-Seal
• Manufacturer: K-Seal

Bar's Leaks 1111 Block Seal Permanent Head Gasket Fix 24 oz.

If the words “blown head gasket” make you nervous, we’re right there with you. We know firsthand that fixing a blown head gasket requires a hefty chunk of change and a few days without your car. Who has time to spend taking their car to the shop for a blown head gasket? And who has the extra cash to pay for a blown head gasket without planning for it? No, visiting the shop for a blown head gasket fix isn’t ideal. But what if we told you it was possible to fix this yourself with one of the most reliable blown head gasket solutions on the planet? Our easy-to-use Bar’s Leaks Head Gasket... [Read More]

• ASIN: B0036VRQ70
• UPC: 046087011119
• ASIN: B0036VRQ70
• Brand: Bar's Leaks
• Size: Pack of 1
• Manufacturer: Bar's Leaks

Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair

Bar's Leaks Head Gasket and Cooling Sealant repairs blown head and intake gasket leaks. Seals cracked cylinder heads and blocks. Stops heater core and radiator leaks. Fixes leaking freeze and core plugs.

• ASIN: B003RGIWO0
• UPC: 046087011362
• ASIN: B003RGIWO0
• Brand: Bar's Leaks
• Size: Pack of 1
• Manufacturer: Bar's Leaks

Genuine GM (12378255) Fluid 3634621 Cooling System Seal Tablet - 4 Grams, (Pack of 5)

Original organic formula designed for use in radiator systems to seal leaks and prevent leaks due to casting porosity in engine components. Seals minor leaks and porosity in cooling systems. DEX-COOL compatible. Non-toxic.

• ASIN: B000QIH3C4
• ASIN: B000QIH3C4
• Brand: Genuine GM
• Size: Pack of 5
• Manufacturer: GM

Bar's Leaks 1194 Radiator Stop Leak Concentrate - 6 oz.

Ever wish you had double the time or money? Or both? We know we do. That’s why we created the Bar’s Leaks Radiator Stop Leak 2X Concentrate. It has double the power of most other stop leak products and saves you double the time and money that it would take to get your car to the repair shop. When you need to fix a radiator leak, you don’t want to spend the time it will take to visit a mechanic. And then there’s the cost of getting a radiator stop leak solution. But getting the fix radiator leak solution you need shouldn’t be time consuming and it shouldn’t be expensive. That’s wh... [Read More]

• ASIN: B006GUMITE
• UPC: 046087011942
• ASIN: B006GUMITE
• Brand: Bar's Leaks
• Size: 11 Ounce
• Manufacturer: Bar's Leaks

Leak Saver Direct Inject Refrigerant Leak Sealer

No more messy syringes, fussy hoses, or pressure sensitive cans. The Leak Savers Direct Inject Sealer will provide fast, effective sealing for your refrigeration system. Use a single or use it in multiples for larger systems. Proven Formula: The concentrated formula means less material floating around in your refrigeration system for a more fluid transfer. Travels with the gas for a faster and more effective seal on your leak. It can be just as successful for you as it has been for the over one million systems applied to. System requirements/Usage instructions: For systems up to 5 tons (60,000... [Read More]

• ASIN: B071VMXMLS
• UPC: 604296227648
• ASIN: B071VMXMLS
• Brand: Leak Savers
• Size: 1 Pack
• Manufacturer: Leak Savers

K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair

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. For truck, tractor, industrial, RV and large capacity engines.

• ASIN: B002BJEG3U
• UPC: 812646010066
• ASIN: B002BJEG3U
• Brand: K-Seal
• Manufacturer: K-Seal

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

It’s part of life: older cars, trucks, vans, SUVs and even RVs can develop larger leaks in their radiators and intake manifolds. If you’ve tried regular stop leak products, you know they are not powerful enough to stop these larger leaks. If you visit the service center down the street, you know just how expensive it can be to repair an intake gasket leak through a mechanic. Isn’t there a better way? There should be, which is why Bar’s Leaks designed the Liquid Copper Block Seal Intake & Radiator Stop Leak. This one-step sealer was designed to quickly and safely stop these overwhelming... [Read More]

• ASIN: B002PX91OG
• UPC: 046087011096
• ASIN: B002PX91OG
• Brand: Bar's Leaks
• Size: Pack of 1
• Manufacturer: Bar's Leaks

FJC 9140 Stop Leak - 3 Ounce

R134A AC System Stop Leak; with Red Dye; Will only seal holes in rubber hoses & enlarges "O" rings

• ASIN: B0002JMFKM
• UPC: 609989007859
• ASIN: B0002JMFKM
• Brand: FJC INC.
• Size: 3oz
• Manufacturer: FJC Inc.

Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams

We all love using our tablets these days — reading, gaming, surfing the web, you name it! Unfortunately, that kind of tablet won’t be able to fix your leaky radiator. Like so many of the parts on your vehicle, your radiator needs regular maintenance to remain in tip-top condition. When you need radiator leak repair, you may be picturing a time-consuming and expensive trip to the mechanic. But, with Bar’s Leaks, that doesn’t have to be your reality when searching to repair a radiator leak. Our product engineers created these Bar’s Leaks Radiator Stop Leak Tablets to repair radiator le... [Read More]

• ASIN: B000KKND3Q
• UPC: 046087000069
• ASIN: B000KKND3Q
• Brand: Bar's Leaks
• Size: Pack of 1
• Manufacturer: Bar's Leaks

A/C PRO MRL-3 R-134a Super Seal Air Conditioning Stop Leak Kit - 3 oz.

The commonly used air conditioning sealer has been on the market since the days of R-12, with little change. However, the introduction of metal component sealers in recent years has revolutionized the industry of air conditioning sealers. While in the air conditioning system, it remains a liquid lubricant and contains additives to penetrate and rejuvenate O-rings, gaskets and other rubber connectors to prevent leakage. Included in Super Seal is a drying agent that gets rid of any moisture that may be inside the air conditioner. If the refrigerant leak occurs in a metal part, the refrigerant le... [Read More]

• ASIN: B004H8V0QY
• UPC: 048168026920
• ASIN: B004H8V0QY
• Brand: Interdynamics
• Size: 3 Ounces
• Manufacturer: Interdynamics

Prestone AS145 Radiator Sealer Stop Leak - 11 oz.

Prestone Radiator Stop Leak features a patented formula that quickly stops leaks in radiators, water pumps, and heater cores while also protecting against pitting and corrosion. Prestone Radiator Stop Leak takes sealing performance to a higher level by both stopping the leak as well as the corrosive condition that causes leaks in the first place. Its unique combination of natural and synthetic components provides the ability to seal leaks up to 0.020-inches x 0.5-inches. What makes this possible is the size, strength, and durability afforded by fibrous particles, the same materials in bulletpr... [Read More]

• ASIN: B00B99U1V4
• UPC: 797496876546
• ASIN: B00B99U1V4
• Brand: Prestone
• Size: 11 Ounce
• Manufacturer: Prestone

Bar's Leaks Liquid Aluminum Stop Leak - 16.9 oz

Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.

• ASIN: B002696FA2
• UPC: 046087011867
• ASIN: B002696FA2
• Brand: Bar's Leaks
• Size: Pack of 1
• Manufacturer: Bar's Leaks

K&W 401224-6 FiberLock Head Gasket & Block Repair - 32 Fl Oz

Permanent pour 'n go head gasket & block repair compatible with all types of antifreeze. Repairs cooling system leaks w/3 unique technologies: military-strength fibers nanotechnology & Cool-X Conditioner-the ultimate solution for all coolant leaks.

• ASIN: B006OW2PIS
• UPC: 078372012242
• ASIN: B006OW2PIS
• Brand: K&W
• Size: 32 Fluid Ounces
• Manufacturer: CRC

Rectorseal 45302 AC Leak Freeze R, 0.5 Oz, Red

Ac leak freeze is the ideal product for air conditioner unit repair and refrigeration repair. Ac leak freeze will stop leaks of refrigerant gas in HVAC air conditioning and refrigeration systems in homes and commercial buildings. Ac leak freeze ensures that the AC repair or refrigeration repair permanently seals leaks. Ac leak freeze is suspended until it mixes with the refrigerant. Ac leak freeze is activated by refrigerant escaping at the site of a leak - forming a chemical weld and sealing the leak.

• ASIN: B01BF7AQXC
• UPC: 891838002799
• ASIN: B01BF7AQXC
• Brand: Rectorseal
• Size: 0.5 Oz
• Manufacturer: The Rectorseal Corporation

EZ Chill R-134a AC Recharge Kit with Leak Sealer Plus

This EZ Chill Kit provides 15 oz. of R-134a refrigerant to replenish your car's leaking A/C System. If the leak is coming from a rubber component such as a rubber hose, gasket, or O-ring, Leak

• UPC: 588172474
• Model: EZC102-W6B
• Rating: 2.546

(12 Pack) Bar's Leaks Cooling System Stop Leak

BARS LEAKS STPS SLS CLNT LKS ASRTD RDTR SLR

• UPC: 798603399
• Rating: 4.296

BlueDevil Head Gasket Sealer | Pour-N-Go

Easy to use pour and go formula. Permanent repair for Head Gaskets, warped or cracked heads, heater cores and freeze

• UPC: 147056356
• Model: 00209
• Color: Blue
• Rating: 3.0

Cyclo Coolant Additive Stop Leak and Sealer P/N C52

Cyclo Coolant Additive Stop Leak and Sealer P/N C52. Coolant Additive. Stop Leak and Sealer. 12.00 oz Bottle. Priced

• UPC: 153246731
• Model: C52
• Color: Multicolor

Fjc, Inc. 501 R134a Advanced Stop Leak 22oz Sealer Formula With Syn Oil

The Fjc Fj501 R134A Advanced Stop Leak 22 oz Detector and Sealer simplifies the job of servicing a vehicle's AC system. It is designed for SUVs and light trucks with larger systems. This R134A leak

• UPC: 34030813
• Model: 501_45_1

12 OZ R134a Leak Sealer Refrigerant Plus Conditioners

12 OZ; R134a Leak Sealer; Refrigerant Plus Conditioners That Penetrate and Rejuvenate O-Rings; Gaskets; and Other Rubber Connectors To Stop

• UPC: 403547199

REINZ BEST QUALITY HEAD GASKET SET 02-36855-01

• UPC: 283690122269
• Category: Gaskets & Seals
• Price: 369 GBP

GOETZE BEST QUALITY HEAD GASKET SET 21-27921-21/0

• UPC: 283712257250
• Category: Gaskets & Seals
• Price: 56 GBP

REINZ BEST QUALITY HEAD GASKET SET 02-37159-01

• UPC: 303405025054
• Category: Gaskets & Seals
• Price: 142 GBP

REINZ BEST QUALITY HEAD GASKET SET 02-36435-02

• UPC: 283799542064
• Category: Gaskets & Seals
• Price: 371 GBP

REINZ BEST QUALITY HEAD GASKET SET 02-53615-01

• UPC: 274290682347
• Category: Gaskets & Seals
• Price: 68 GBP

REINZ BEST QUALITY HEAD GASKET SET 03-38305-01

• UPC: 274290682717
• Category: Gaskets & Seals
• Price: 94 GBP

REINZ BEST QUALITY HEAD GASKET SET 02-42033-01

• UPC: 303502506082
• Category: Gaskets & Seals
• Price: 112 GBP

REINZ BEST QUALITY HEAD GASKET SET 02-36855-02

• UPC: 283799541408
• Category: Gaskets & Seals
• Price: 240 GBP

REINZ BEST QUALITY HEAD GASKET SET 03-34885-01

• UPC: 274290684099
• Category: Gaskets & Seals
• Price: 62 GBP

REINZ BEST QUALITY HEAD GASKET SET 03-34885-02

• UPC: 283799541586
• Category: Gaskets & Seals
• Price: 63 GBP