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10 bestCoolant Sealantof February 2025

112M consumers helped this year.

40% off

1

Prestone PAFR0035B Coolant Antifreeze for All Vehicles 10 year 300,000 miles Corrosion Protection, Ready to Use, 1 Litre
Prestone PAFR0035B Coolant Antifreeze for All Vehicles 10 year 300,000 miles Corrosion Protection, Ready to Use, 1 Litre

Prestone

9.8

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2

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

9.6

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9% off

3

MANNOL 5L Coolant Antifreeze G12+ RED Ready Mixed -30°C / +125 German Hi Spec
MANNOL 5L Coolant Antifreeze G12+ RED Ready Mixed -30°C / +125 German Hi Spec

9.4

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10% off

4

Wynn's Engine Oil Stop Leak Sealer Treatment Additive For All Engine Types 325ml & Car Radiator Stop Leak Sealant Antifreeze Coolant Repair Additive 325ml
Wynn's Engine Oil Stop Leak Sealer Treatment Additive For All Engine Types 325ml & Car Radiator Stop Leak Sealant Antifreeze Coolant Repair Additive 325ml

Wynn's

9.1

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5

Holts HAFR0008B Antifreeze Coolant for Car Mercedes & BMW, 10-year 300k mile long life, protection to -37°C, Includes Spout, Blue, 5 Litre
Holts HAFR0008B Antifreeze Coolant for Car Mercedes & BMW, 10-year 300k mile long life, protection to -37°C, Includes Spout, Blue, 5 Litre

Holts

8.8

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Wynn's Car Radiator Stop Leak Sealant Antifreeze Coolant Repair Additive 325ml

Wynn's Car Radiator Stop Leak Sealant Antifreeze Coolant Repair Additive 325ml

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AMK® Holts Radweld Stops Leaks In Radiator & Hoses For Car Cooling System 250ml Repairs Leak

AMK® Holts Radweld Stops Leaks In Radiator & Hoses For Car Cooling System 250ml Repairs Leak

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AMK® Holts Radweld Plus 250ml Coolant Leak Repair Suitable for All Cars No Clogging Works in Whole System Permanent Non Damaging

AMK® Holts Radweld Plus 250ml Coolant Leak Repair Suitable for All Cars No Clogging Works in Whole System Permanent Non Damaging

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Plextone Black RTV Silicone Engine Repair Gasket Seal Maker, Sealant Glue, High Temperature Heat Resistant from -80ºF to 600ºF

Plextone Black RTV Silicone Engine Repair Gasket Seal Maker, Sealant Glue, High Temperature Heat Resistant from -80ºF to 600ºF

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6

Car Radiator & Hose Stop Leak Repair Additive Anti Corrosion 250ml Repairs Weld Cooling System Rads
Car Radiator & Hose Stop Leak Repair Additive Anti Corrosion 250ml Repairs Weld Cooling System Rads

ARZER

8.6

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7

Wynn's Black Instant Gasket Maker Silicone High Temperature RTV Sealant 200ml
Wynn's Black Instant Gasket Maker Silicone High Temperature RTV Sealant 200ml

Wynn's

8.3

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14% off

8

Prestone LOYAF2100LGBA Coolant/Antifreeze - Ready to Use 1lt
Prestone LOYAF2100LGBA Coolant/Antifreeze - Ready to Use 1lt

Prestone

8.0

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9

Visbella Neutral RTV 100% Gasket Maker Oil and Water Resistance Anti-Freeze Remain Flexible Ultra 3 oz. High Temperature 600°F Sealant Tube
Visbella Neutral RTV 100% Gasket Maker Oil and Water Resistance Anti-Freeze Remain Flexible Ultra 3 oz. High Temperature 600°F Sealant Tube

Visbella

7.7

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10

K-Seal HD Coolant Leak Repair, 472ml | HGV Radiator, Block & Head Gasket Sealant
K-Seal HD Coolant Leak Repair, 472ml | HGV Radiator, Block & Head Gasket Sealant

K-Seal

7.4

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