Best Coolant Sealant

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

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

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

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

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

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

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

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

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

Prestone LOYAF2100LGBA Coolant/Antifreeze - Ready to Use 1lt