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Head Gasket Sealers

10 Best Head Gasket Sealers 2025 in the United States

From leading brands and best sellers available on the web.
#1

Winner

Permatex 8

Permatex

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 3 oz

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#2
K-Seal ST5

K-Seal

K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

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#3
BlueDevil

BlueDevil Products

BlueDevil Products 38386 Head Gasket Sealer - 1 Quart

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#4
Permatex 8

Permatex

Permatex 80697 Copper Spray-A-Gasket Hi-Temp Adhesive Sealant, 9 oz. net Aerosol Can , Orange

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#5
Permatex 3

Permatex

Permatex 30300 Head Gasket Repair - Multi-Purpose Stop-Leak, 16 fl. Oz, Seals Head Gaskets While Preventing Future Leaks

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Up to 14% off

#6
K-Seal ST3

K-Seal

K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks

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#7
Permatex 8

Permatex

Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.

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#8
K-Seal ST5

K-Seal

K-Seal ST5516 Heavy-Duty Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

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#9
BlueDevil

BlueDevil Products

BlueDevil Products 00209 Pour-N-Go Head Gasket Sealer - 16 Ounce

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#10
Bar's Leak

Bar's Leaks

Bar's Leaks Block Seal Head Gasket Fix

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