We use cookies to enhance the security, performance, functionality and for analytical and promotional activities. We use cookies to personalize ads for you. By continuing to browse this site you're agreeing to our Privacy PolicyWe use cookies to enhance your experience and personalize ads. By using the site, you agree to that. Privacy Policy

10 bestHead Gasket Sealerof December 2025

112M consumers helped this year.

1

RELD Head Gasket Tester Kit Combustion Leak Detector for 50 Tests
RELD Head Gasket Tester Kit Combustion Leak Detector for 50 Tests

RELD

10.0

View Product
Buy it on Amazon

2

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market
K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market

K-Seal

10.0

View Product
Buy it on Amazon

3

Permatex 59803 Ultra Black Gasket Maker 598BR, 80mL
Permatex 59803 Ultra Black Gasket Maker 598BR, 80mL

Permatex

9.9

View Product
Buy it on Amazon

4

Permatex 59203 Black RTV Silicone Adhesive Sealant 16BR, 80ml
Permatex 59203 Black RTV Silicone Adhesive Sealant 16BR, 80ml

Permatex

9.9

View Product
Buy it on Amazon

5

Permatex 59403 Red High Temperature RTV Gasket Maker 26BR, 80ml
Permatex 59403 Red High Temperature RTV Gasket Maker 26BR, 80ml

Permatex

9.7

View Product
Buy it on Amazon

Related productsUp to 18% off

BlueDevil Pour-N-Go Head Gasket Sealer - 16 Ounce (00209)

BlueDevil Pour-N-Go Head Gasket Sealer - 16 Ounce (00209)

View Deal
170g RTV Silicone Gasket Maker, Red Silicone Sealant Shockproof and Leakproof, High Temperature Resistant, RTV Sealant Can be Used in Engines, Transmissions, Superchargers and All Types of Gaskets

170g RTV Silicone Gasket Maker, Red Silicone Sealant Shockproof and Leakproof, High Temperature Resistant, RTV Sealant Can be Used in Engines, Transmissions, Superchargers and All Types of Gaskets

View Deal
Bar's Leak HG-1-4PK Head Seal Blown Head Gasket Repair - 33.8 oz, (Pack of 4)

Bar's Leak HG-1-4PK Head Seal Blown Head Gasket Repair - 33.8 oz, (Pack of 4)

View Deal
BlueDevil Head Gasket Sealer - 32 Ounce(38386)

BlueDevil Head Gasket Sealer - 32 Ounce(38386)

View Deal

10% off

6

Permatex 59423 Optimum Red High Temperature Gasket Maker, 80mL
Permatex 59423 Optimum Red High Temperature Gasket Maker, 80mL

Permatex

9.6

View Product
Buy it on Amazon

7

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

K-Seal

9.4

View Product
Buy it on Amazon

8

Irontite All Weather Seal, Blue, 16 oz (468-9130-16)
Irontite All Weather Seal, Blue, 16 oz (468-9130-16)

Irontite

9.1

View Product
Buy it on Amazon

9

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

K-Seal

8.9

View Product
Buy it on Amazon

10

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

Bar's Leaks

8.7

View Product
Buy it on Amazon

Related Reviews You Might Like

Head Gasket Sealers

Head Gasket Sealers
subscribe-icon

Best Reviews Guide Newsletter

Get exclusive articles, recommendations, shopping tips, and sales alerts

By submitting your email address you agree to our Terms and Conditions and Privacy Policy