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10 bestRadiator Leak Sealerof December 2024

112M consumers helped this year.

1

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

9.8

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2

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

K-Seal

9.6

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3

Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132
Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132

Liqui Moly

9.3

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30% off

4

Bar's Leaks PLT11 Pelletized Radiator Stop Leak - 11 oz.
Bar's Leaks PLT11 Pelletized Radiator Stop Leak - 11 oz.

Bar's Leaks

9.1

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5

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

8.8

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12% off

6

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

Bar's Leaks

8.5

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7

Bar's Leaks 1194 Grey Radiator Stop Leak - 6 oz.
Bar's Leaks 1194 Grey Radiator Stop Leak - 6 oz.

Bar's Leaks

8.2

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8

Bar's 1196-6PK Radiator Stop Leak 6/11Oz
Bar's 1196-6PK Radiator Stop Leak 6/11Oz

Bar's Leaks

7.9

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6% off

9

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.
Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

Bar's Leaks

7.6

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10

Prestone AS145 Radiator Sealer Stop Leak - 11 oz.
Prestone AS145 Radiator Sealer Stop Leak - 11 oz.

Prestone

7.3

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