5 Best Head Gasket Sealer for NorthStar Engine 2023 (Top Collections)

Best Head Gasket Sealer for NorthStar Engine:- Imagine If you notice symptoms of blown head gasket, it’s so frustrating, and you might think that no other expense. Blown Head Gasket is not a big expense if you are using a Head gasket sealer, but replacing a blown head gasket sealer might cost you thousands of bucks.

Best Head Gasket Sealer for Northstar Engine

That’s why we tested out nearly all the reputed Head Gasket Sealer Brands and found out the Best Head Gasket Sealer for the car that offers top-notch quality over others.

Let’s discuss why these head gaskets are in one of the top collections right now.

Top 5 Best Head Gasket Sealer for NorthStar Engine with Pros and Cons

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

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

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It is a top feature product known for its quick action mechanism with 15 minutes response capability. It also doesn’t even require flushing the coolant system and saves money on a dedicated flushing agent.

The sealing capabilities fabricate permanent solutions because of antifreeze sodium silicate and various sealing particles that ensure its long glass hardening right after its application.

Moreover, this head gasket sealer is efficient on gasoline and petrol, both types of engines. The product also comes with a money-back guarantee.

Use the appropriate quantity of half bottle for 1 to 1.5 gallons and full bottle for 1.5 to 4 gallons of cooling system for its superior functionality; otherwise can damage the engine.

  • Act within 15 mins.
  • No flushing required
  • Permanent sealing
  • Additional antifreeze sodium silicate
  • Various sealing particles for Glass hardening
  • Follow appropriate quantity
  • Reduce thermostat performance
  • Powder residue remains in the engine

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

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

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It is one of the best value-for-money head gasket sealants that come with pour-and-go functionality. It is effective with both coolant and antifreeze with considerably safer to use and apply for common users.

It is a tested product for its maximum effectiveness. It also met the required standards of ASTM D3147 that verifies top stop leak additives. Moreover, no flushing is required with this sealant.

However, this might not work with large vehicles. In that circumstances, you may require a slightly larger quantity. You also need to shake the product before using it. It is five times more effective than regular sealants and claims to cover holes within 3 minutes.

  • Fast action
  • No flushing required
  • Verified ASTM D31447 standards
  • Highly effective
  • Antifreeze compatible
  • Able to bear high compression
  • Cause trouble without direction to use
  • Not much effective on large vehicles
  • It needs to shake well

3. Permatex 80697 Copper Spray-A-Gasket High-Temp Adhesive Sealant

Permatex 80697 Copper Spray-A-Gasket High-Temp Adhesive Sealant

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This Permatex head gasket sealant is known for its efficient working in almost all temperatures. The temperature scale is -50 degree F -500 degree F that is a rare capability compared to others.

It eliminates hot spot appearance and enhances heat disposal. Although it requires time to comes into effect. Also, it would help if you discharged the gasket for its work and have shaken the can for about 1 minute.

Overall it sticks firmly, efficient at high temperatures, and also prevents coolant leaks.

  • Temperature bear ability
  • Eliminates hot spot appearance
  • Increase heat disposal
  • Prevent coolant tanks
  • Sticks firmly
  • Highly Affordable
  • It takes time to effect
  • Not efficient on rubber gaskets

4. Steel Seal Head Gasket Sealer

Steel Seal Head Gasket Sealer

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It is one of the most values for money products that are also very easy to use. You only have to pour it in the radiator as per the appropriate directions, and in some time, you are ready to use your vehicle.

It is best for six-cylinder engines due to its innovative particle formulations. It is also versatile and doesn’t lead to har particle formations.

Thought the Colling system needs to flush out for its proper functioning. It would help if you also had a dedicated flushing agent. The damage coverage is permanent and even efficient on high temperatures and compressions.

  • Overheating bearable
  • Removes antifreeze devastation
  • Easy to use
  • Best value for money
  • Innovative particle formation
  • Best for six cylinders
  • Need to flush
  • Dedicated flushing agent required

5. Blue Devil Pour-N-Go Head Gasket Sealer

Blue Devil Pour-N-Go Head Gasket Sealer

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BlueDevil Head Gasket Sealer is the best versatile option in pour and go that repairs your head gasket permanently and provides a strong chemical weld. It is the best choice for the vehicle owner who doesn’t have any prior or basic engine knowledge as it comes with ease of direction.

It can fix a blown head gasket for several months to years, depending on the quality of damage. It is effective for some major damage for a small duration.

For its functioning, you don’t need to remove the thermostat or flush the cooling system. It is suitable for different head materials like aluminum, alloy, etc.

The sealant requires 1 minute of shaking and approx 1 hour after its application to work efficiently. It also protects against overheating.

  • More reliable option
  • No internal harm
  • Prevents overheating
  • Versatile
  • Provides Strong chemical weld
  • Ease of use
  • May have a thermostat problem
  • Not have quick action


Will the head Gasket Sealer ruin an engine?

With a trusted head gasket sealer, there is no harm to the engine, and it also helps you save thousands that you may spend on a complete replacement.

How long will the head gasket sealer last?

Irrespective of companies’ claims, a head gasket sealer is a temporary fix, and you need to replace the whole system if you have major blown head gasket problems.

Can you use a head gasket sealer twice?

Yes, but in the second turn, you need to flush out the cooling system no matter if your sealer can work with flushing or not.

Is the head gasket sealer any good?

Yes, it is effective and efficient for minor blown-head gaskets.


This article contains a list of top-notch head gasket sealants and all the other products in the market and provides the details in the necessary form. The only reason to gather this list is to provide clearance to users about the top collection head gasket sealer’s unique functionality.

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