BEST DEALS THIS WEEK

10 Best Head Gasket Sealer - May 2026

19M consumers helped this year.

Last Updated: 27-05-2026

1

Steel Seal SSAMZ Head Gasket Repair – Pour In Engine Head Gasket Sealer for Water Cooling Systems – Works with All Blue Antifreeze Types – Cars, Vans, 4x4s, Trucks & Motorbikes

Steel Seal SSAMZ Head Gasket Repair – Pour In Engine Head Gasket Sealer for Water Cooling Systems – Works with All Blue Antifreeze Types – Cars, Vans, 4x4s, Trucks & Motorbikes

Steel Seal

9.8

9.8

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2

Bar's H1S1L-27 Head Gasket Repair 600ml

Bar's H1S1L-27 Head Gasket Repair 600ml

Bars

9.6

9.6

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3

The Award Winning Steel Seal

The Award Winning Steel Seal

Steel Seal

9.5

9.5

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4

K-Seal Ultimate Head Gasket & Block Repair | Seal & Fix Coolant Leaks, 472ml

K-Seal Ultimate Head Gasket & Block Repair | Seal & Fix Coolant Leaks, 472ml

K-Seal

9.2

9.2

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5

Holts Radweld Plus Coolant Leak Repair, Total Coolant Leak Repair, Industry Leading Car Radiator Leak Sealant, Easy To Use, Seal Engine Block, Cylinder Head, Hoses & More, Suitable For All Cars, 250ml

Holts Radweld Plus Coolant Leak Repair, Total Coolant Leak Repair, Industry Leading Car Radiator Leak Sealant, Easy To Use, Seal Engine Block, Cylinder Head, Hoses & More, Suitable For All Cars, 250ml

Holts

9.1

9.1

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6

K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

K-Seal

8.8

8.8

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7

BLUE DEVIL POUR AND GO HEAD GASKET SEALANT

BLUE DEVIL POUR AND GO HEAD GASKET SEALANT

BlueDevil Products

8.6

8.6

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8

Nitrox Steel Weld Seal for Head Gaskets, 500 ml

Nitrox Steel Weld Seal for Head Gaskets, 500 ml

Nitrox

8.4

8.4

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9

BLOWN HEAD GASKET? HYPER-SEAL A PERMANANT REPAIR SOLUTION!

BLOWN HEAD GASKET? HYPER-SEAL A PERMANANT REPAIR SOLUTION!

ENGINE REVIVE

8.2

8.2

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10

Steel Seal Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines

Steel Seal Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines

Steel Seal

8.1

8.1

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