1
Editor's Choice
Bar'S Leaks HG-1 Head Seal Blown Head Gasket Repair
BAR'S LEAKSBrand
HG-1Model
3.22H*9.78L*3.22W inchesDimension
9.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $$
Save 10% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- REPAIR BLOWN HEAD & INTAKE GASKET LEAKS - The fastest, safest way to solve your vehicles coolant-related head gasket issues.
- SEAL WARPED / CRACKED HEADS & BLOCKS - Your vehicle is a good candidate for this solution if it can idle for 15 minutes without overheating or having to add coolant.
- ANTIFREEZE COMPATIBLE, NO FLUSHING REQUIRED - Use with ALL types of 50-50 mix coolant including yellow, orange, pink, red, blue and green silicate based & non-silicate based (OAT / HOAT) antifreeze, and water. No draining or thermostat removal required.
- REINFORCED WITH CARBON FIBERS - Works with ALL gasoline and diesel engines. This also for use in all racing applications.
2
Editor's Choice
Bluedevil Products 38386 Head Gasket Sealer - 1 Quart
BLUEDEVIL PRODUCTSBrand
38386Model
2.9 lbWeight
9.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $$
Save 24% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- Easy to use - The BlueDevil Head Gasket Sealer is designed to be easy to use, allowing you to quickly and easily seal leaks in your engine without the need for any special tools or skills.
- Permanent seal - This product is formulated to provide a permanent seal for your head gasket, ensuring that you won't have to worry about leaks or other issues down the line. It will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs.
- Compatible with all types of engines - Compatible with gasoline and diesel engines, making it a versatile product that can be used on a wide range of vehicles.
- Safe to use - Contains no solid or particulate matter and will not clog or harm your engine. It bonds to metal, aluminum, cast, alloy, or plastic, making it safe to use as a permanent seal for your head gasket leak
3
Editor's Choice
Bluedevil Products 00209 Pour-N-Go Head Gasket Sealer
BLUEDEVIL PRODUCTSBrand
00209Model
5.5H*2.75L*2.75W inchesDimension
1.0 lbWeight
9.3We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $
Visit Store » Side-To-Main, LLC ( 4.38 / 5 )
Features
- Easy to use - Pour-N-Go, Do It Yourself formula is designed to be easy to use, allowing you to quickly and easily seal leaks in your engine without the need for any special tools or skills.
- Permanent seal - This product is formulated to provide a permanent seal for your head gasket, ensuring that you won't have to worry about leaks or other issues down the line. It will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs.
- Compatible with all types of engines - Compatible with gasoline and diesel engines, making it a versatile product that can be used on a wide range of vehicles.
- Safe to use - Contains no solid or particulate matter and will not clog or harm your engine. It bonds to metal, aluminum, cast, alloy, or plastic, making it safe to use as a permanent seal for your head gasket leak
4
K-Seal KSLST3501 St3501 Pour And Go Head Gasket Sealer
K-SEALBrand
KSLST3501Model
8.0H*2.5L*2.5W inchesDimension
1.0 lbWeight
9.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $
Save 23%
Visit Store » R/A Hoerr Incorporated ( 4.86 / 5 )
Features
- PERMANENT REPAIR - Our advanced formula with 33% more sealing power than regular K-Seal, ensures a long-lasting, permanent seal for challenging leaks. Permanently fixes blown head gaskets, cracked heads & porous engine blocks in cars
- STOP HOLES & CRACKS - With just 1 step our unique formula with ceramic micro-fibres, will permanently seal leaks up to 0.64mm in size, without any adverse impact on the engine
- EASY TO USE - It requires no draining or flushing; just shake, pour & go - shake the bottle, add the fluid wherever you top up your coolant & run your engine as normal. For larger engines (HGV's / Plant) use 2 bottles
- VERSATILE COMPATIBILITY - Works with all types of coolant & compatible with a wide range of vehicle engine materials & heavy duty machinery. A permanent fix for the lifetime of the engine
- PROFESSIONAL-GRADE RELIABILITY - Trusted by mechanics, our sealer treatment delivers a durable & long-lasting repair. A cost-effective head gasket & block repair, enhancing the performance of your vehicles cooling system. We've sold millions worldwide & are independently verified by university testing to meet ASTM D3147.
5
K & W 401224 Fiberlock Head Gasket & Block Repair
K & WBrand
401224Model
9.54H*3.4L*3.4W inchesDimension
9.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
Save 8% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- PERMANENT FIX - Seals larger holes with less fluid loss than competitive products to permanently repair leaks in 30 minutes or less.
- EASY TO USE - Our easy; pour-in formula allows you to fix leaks without having to drain your cooling system.
- PREMIUM FORMULA - Contains military strength fibers to create multi-layer repair over cracks with a web-like weave. Nanotechnology permanently fixes the smallest cracks and crevices. Lowers operating temperature as it circulates through cooling system.
- PRODUCT SPECIFICATIONS - CRC FiberLock Head Gasket & Block Repair is available in a 32 fl oz bottle.
- CRC INDUSTRIES - A market leader that offers impeccably designed chemical solutions to maintain; protect and repair different marine; heavy-duty motor vehicles; industrial-grade engines; household tools and electrical equipment.
6
Steel Seal 8CYL001USA Head Gasket Sealer For 8 Cylinder Engines
STEEL SEALBrand
8CYL001USAModel
8.0H*4.0L*4.0W inchesDimension
8.8We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$$
FreeShipping
Visit Store » Steel Seal U.S.A. ( 4.38 / 5 )
7
Bar'S Leaks 1111 Block Seal Head Gasket Fix
BAR'S LEAKSBrand
1111Model
2.5H*9.5L*2.6W inchesDimension
1.0 lbWeight
8.6We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- SAFELY SEALS GASKET AND OTHER SEVERE LEAKS - One step formulation contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps and cracks then harden to permanently stop leaks. Heavy duty formula works on aluminum and cast iron heads & blocks, along with sealing all other engine cooling system leaks better than a traditional stop leak. This includes repairing head gaskets, cylinder heads, intake gaskets, cracked blocks and freeze plugs.
- QUICKLY AND PERMANENTLY STOPS COOLANT LEAKS - This works because of the extreme heat inside the combustion chamber (5000F) that acts as a catalyst to permanently harden the material to make it stronger than the actual head gasket itself.
- ONE STEP - NO DRAINING REQUIRED - EASY TO USE - Your vehicle is a good candidate for this product if it can idle for 20 minutes without overheating or having to add coolant.
- USE WITH ALL TYPES OF TRADITIONAL OR EXTENDED LIFE COOLANT - Use with ALL types of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water.
- Made in the USA
8
Bar'S Leaks 1100 Head Gasket Repair - 20 Oz.
BAR'S LEAKSBrand
1100Model
8.3H*1.8L*3.4W inchesDimension
1.41 lbWeight
8.6We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- Stops block leaks
- Seals cracked cylinder heads and blocks
- Repairs blown head gaskets
- 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
- 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.
- Included components - Unit, Instruction Guide
9
Permatex 20539 Indian Head Gasket Shellac Compound
PERMATEXBrand
20539Model
1.25H*1.25L*3.69W inchesDimension
0.1 lbWeight
8.6We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
10
Hi-Gear HG9048S Insta-Seal Permanent Block Sealer
HI-GEARBrand
HG9048sModel
7.12H*2.25L*2.25W inchesDimension
0.6 lbWeight
8.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- Permanently repairs leaks in gaskets, radiators, heater cores, intake manifolds, blocks, heads and freeze plugs
- Compatible with all types of antifreeze and no draining required
- Insta-Seal fixes both large and small leaks in plastic, aluminum and cast iron intakes, heads, blocks and radiators
- Insta-Seal will not void the manufacturer's warranty
- Ceramic micro-fibers, copper and heat combine to "weld" both large and small cracks
11
Steel Seal 4CYL001USA Head Gasket Sealer For 4 Cylinder Engines
STEEL SEALBrand
4CYL001USAModel
8.0H*4.0L*2.0W inchesDimension
8.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$$
FreeShipping
Visit Store » Steel Seal U.S.A. ( 4.38 / 5 )
12
Permatex 80697 Copper Spray-A-Gasket Hi-Temp Adhesive Sealant
PERMATEXBrand
80697Model
6.38H*2.63L*2.63W inchesDimension
0.75 lbWeight
8.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $
Save 14% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- Fast-drying, metallic copper spray adhesive/sealant helps to dissipate heat, prevents gasket burnout, and improves heat transfer
- Fills minor surface irregularities, fills hot spots and surface imperfections
- Resists all types of automotive fluids, especially gasoline
- Temperature Range - -50F to 500F (-45C to 260C)
- Suggested Applications - Cylinder head gaskets, exhaust manifold gaskets, and other high temperature applications
13
Permatex 30300 Head Gasket Repair - Multi-Purpose Stop-Leak
PERMATEXBrand
30300Model
8.88H*2.56L*2.56W inchesDimension
7.9We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $
Save 21% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- Reliable and Cost Effective - Designed to Provide Automotive Users With a Reliable and Cost-Effective Solution for Fixing Head Gasket Leaks, Resulting in Engine Overheating and Costly Repairs.
- Advanced Formula - This Advanced Formulation Not Only Seals Head Gasket Leaks, but Also Prevents Future Leaks From Occuring.
- Must Have Addition - Whether You're A Professional Mechanic Or A DIY Enthusiast, the Permatex Head Gaskit Repair - Stop Leak is a Must-Have Addition to Your Toolkit
- Easy-To-Use - Easy to Use, One Step Process and Mixes with All Types of Anti-Freeze Making This a Permanent All-in-One Solution to Prevent Future Leaks.
14
Steel Seal 6CYL001USA Blown Head Gasket Fix Repair Sealer
STEEL SEALBrand
6CYL001USAModel
8.0H*4.0L*4.0W inchesDimension
7.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $$$
FreeShipping
Visit Store » Steel Seal U.S.A. ( 4.38 / 5 )
15
Moroso 35500 Ceramic Engine Seal - 1 Pint
MOROSOBrand
35500Model
10.0H*3.25L*3.25W inchesDimension
1.62 lbWeight
7.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- Fit type - Vehicle Specific
- The best Chemical Sealer you can buy to stop cooling system leaks Works equally well in aluminum or cast-iron blocks Cooling system must be thoroughly clean before use Does not work with antifreeze If this doesn't stop the leaks, find yourself a welder!
- Part number - 35500
- Package Weight - 1.6 pounds
16
Fel-Pro 26516PT 26516 Pt Head Gasket
FEL-PROBrand
26516PTModel
0.19H*22.0L*14.75W inchesDimension
0.5 lbWeight
7.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $$
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- FEL-PRO 26516 PT Engine Cylinder Head Gasket for Chevrolet Cruze
- COMPATIBILITY Fits 2011-2016 Chevrolet Cruze; 2012-2018 Chevrolet Sonic; 2009-2011 Chevrolet Aveo; 2016-2016 Chevrolet Cruze Limited; 2009-2011 Chevrolet Aveo5; 2009-2009 Pontiac G3 Wave; 2009-2010 Pontiac G3
- GET THE RIGHT PART - Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes
- PROPRIETARY COATING - Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
- SUPERIOR SEAL - Precise embossed sealing beads at all vital areas to eliminate leak paths
- MULTI-LAYERED STEEL CONSTRUCTION - Multiple layers of stainless steel maintain sealing stress and accommodate head lift
- UNIQUE COMBUSTION SEAL - Accommodates high cylinder pressures and head movement encountered with engines
- DESIGNED FOR IMPERFECT SEALING SURFACES - Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
17
K-Seal ST5516 Heavy-Duty Multi-Purpose One Step Permanent Coolant Leak Repair
K-SEALBrand
ST5516Model
1.9H*5.9L*4.1W inchesDimension
Ranked #5 in Best Radiator Sealers Of 2024
7.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $
FreeShipping
Visit Store » VerSure ( 4.92 / 5 )
Features
- FIX IT FAST - Our multi-purpose solution works in minutes to quickly & permanently seal leaks in the radiator, head gasket, freeze plugs, block, heater matrix & water pump of heavy duty vehicles. Fixes most leaks in water-cooled engines
- STOP HOLES & CRACKS - With 1 step our unique formula will seek out each hole & crack, permanently sealing them, without any adverse impact on the efficiency of your engine cooling
- EASY TO USE - K-Seal couldn't be simpler & requires no draining or flushing; just shake, pour & go - shake the bottle, add the fluid to your coolant system & run your engine as normal
- HEAVY DUTY PERFORMANCE - Engineered for large engines & industrial use; suitable for commercial or agricultural vehicles. A permanent repair for the lifetime of the engine. Compatible with all types of antifreeze coolant
- PROFESSIONAL-GRADE RELIABILITY - Trusted by mechanics, our non-corrosive sealer delivers a durable & long-lasting repair, without clogging your cooling system. A cost-effective solution to engine coolant leaks, enhancing the reliability & performance of your vehicles cooling system. We've sold millions worldwide & are independently verified by university testing to meet ASTM D3147
18
Blue Magic 1116 Liquid Glass Metallic Seal-Up
BLUE MAGICBrand
1116Model
7.2H*2.7L*2.7W inchesDimension
1.43 lbWeight
7.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
19
Permatex 20539-12PK Indian Head Gasket Shellac Compound
PERMATEXBrand
20539-12PKModel
0.12 lbWeight
7.1We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $$
Visit Store » Newparts ( 4.2 / 5 )
Features
20
Thermalweld Professional Strength Engine Head Gasket Repair And Block Sealer
THERMALWELDBrand
THERMALWELDModel
2.0H*6.3L*2.0W inchesDimension
7.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Fair
Price: $$$
Visit Store » Square Deal Recordings&Supplies ( 4.88 / 5 )
Features