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10 bestHead Gasket Sealersof June 2025

112M consumers helped this year.

1

K-SEAL Permanent COOLANT Leak Repair Liquid 236ml - Stop Radiator Leak, Head Gasket Repair,Block/Head Sealer-No Draining/No Flushing,for All Cars, Light Trucks, Heavy Trucks & Buses

K-SEAL Permanent COOLANT Leak Repair Liquid 236ml - Stop Radiator Leak, Head Gasket Repair,Block/Head Sealer-No Draining/No Flushing,for All Cars, Light Trucks, Heavy Trucks & Buses

K-SEAL Permanent COOLANT Leak Repair Liquid 236ml - Stop Radiator Leak, Head Gasket Repair,Block/Head Sealer-No Draining/No Flushing,for All Cars, Light Trucks, Heavy Trucks & Buses

K-Seal

9.8

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2

Bar's Products Leak HG-1 Head Seal Blown Head Gasket Repair

Bar's Products Leak HG-1 Head Seal Blown Head Gasket Repair

Bar's Products Leak HG-1 Head Seal Blown Head Gasket Repair

Bar's Leaks

9.6

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3

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 ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair

K-Seal

9.3

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4

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube

Permatex

9.0

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5

WFLNHB Head Gasket Replacement for 1999 2000 2001 Chevy GMC Buick Cadillac 4.8L 5.3L HS9292PT HS9292PT-1 HS54331 HS54331A

WFLNHB Head Gasket Replacement for 1999 2000 2001 Chevy GMC Buick Cadillac 4.8L 5.3L HS9292PT HS9292PT-1 HS54331 HS54331A

WFLNHB Head Gasket Replacement for 1999 2000 2001 Chevy GMC Buick Cadillac 4.8L 5.3L HS9292PT HS9292PT-1 HS54331 HS54331A

WFLNHB

8.8

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6

J-B Weld 32926 Ultimate Blue RTV Silicone Gasket Maker and Sealant - 9.5 oz.

J-B Weld 32926 Ultimate Blue RTV Silicone Gasket Maker and Sealant - 9.5 oz.

J-B Weld 32926 Ultimate Blue RTV Silicone Gasket Maker and Sealant - 9.5 oz.

J-B Weld

8.5

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7

Bar's Leaks 1334-5PK One Seal Stop Leak - 11 oz, (Pack of 5)

Bar's Leaks 1334-5PK One Seal Stop Leak - 11 oz, (Pack of 5)

Bar's Leaks 1334-5PK One Seal Stop Leak - 11 oz, (Pack of 5)

Bar's Leaks

8.2

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8

Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.

Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.

Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz.

Permatex

7.9

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9

Bar's Products Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz

Bar's Products Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz

Bar's Products Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz

Bar's Leaks

7.6

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10

AUTOXBERT 105g 3.7oz High Temperature Instant RTV Silicone Sealant Gasket Maker Bonding Engine Parts Valve Oil Resistant Waterproof Temp

AUTOXBERT 105g 3.7oz High Temperature Instant RTV Silicone Sealant Gasket Maker Bonding Engine Parts Valve Oil Resistant Waterproof Temp

AUTOXBERT 105g 3.7oz High Temperature Instant RTV Silicone Sealant Gasket Maker Bonding Engine Parts Valve Oil Resistant Waterproof Temp

AUTOXBERT

7.4

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