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10 bestCoolant Stop Leaksof March 2025

112M consumers helped this year.

1

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

9.9

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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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3

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

9.6

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4

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

9.4

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5

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

Holts

9.2

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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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HOLTS Wondarweld - 500ml - WW500

HOLTS Wondarweld - 500ml - WW500

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Holts LOYRW2R Radweld 250ml

Holts LOYRW2R Radweld 250ml

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5in1 Radiator Stop Leak 310ml

5in1 Radiator Stop Leak 310ml

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6

LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956
LIQUI MOLY Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956

Liqui Moly

9.0

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7

Power Maxed - Coolant Seal Leak Repair - 250ml
Power Maxed - Coolant Seal Leak Repair - 250ml

Power Maxed

8.7

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8

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

K-Seal

8.4

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12% off

9

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

Holts

8.1

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10

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

Liqui Moly

7.9

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