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10 bestRadiator Leak Sealerof January 2025

112M consumers helped this year.

1

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

9.9

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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

9.8

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10% off

3

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

Wynn's

9.7

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4

K-Seal Permanent Coolant Leak Repair for Cooling Systems Head Gaskets Radiators
K-Seal Permanent Coolant Leak Repair for Cooling Systems Head Gaskets Radiators

Generic

9.5

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5

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

AMK

9.2

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LIQUI MOLY Pro-Line Radiator Stop Leak K | 250 ml | Cooler additive | SKU: 5178

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Bar's BARSRSC1L91 Refrigeration System Leak Sealant Additive, Radiator, 200 ml

Bar's BARSRSC1L91 Refrigeration System Leak Sealant Additive, Radiator, 200 ml

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Bars Powdered Radiator, Engine Block and Gasket Leak Sealant 15 gr

Bars Powdered Radiator, Engine Block and Gasket Leak Sealant 15 gr

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6

K-Seal HD Coolant Leak Repair 472ml
K-Seal HD Coolant Leak Repair 472ml

K-Seal

9.0

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12% off

7

Holts Sealit Leak Repair 250ml, (Packing May Vary)
Holts Sealit Leak Repair 250ml, (Packing May Vary)

Holts

8.8

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8

Holts 1831469 Radweld Plus New Formula 250ml
Holts 1831469 Radweld Plus New Formula 250ml

Holts

8.5

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9

FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232)
FERNOX Central Heating Leak Sealer F4 Express 400ml - Fast Results - 30 sec - (Replacement 58232)

Fernox

8.2

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5% off

10

Holts Radweld Radiator and Coolant System Leak Repair 250ml No
Holts Radweld Radiator and Coolant System Leak Repair 250ml No

Holts

7.9

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