K-Seal Multi-Purpose Coolant Leak Repair ST5501

FIX IT FAST: Our multi-purpose solution works quickly and permanently to seal radiator, head gasket, freeze plug, block, heater matrix, and water pump leaks in water-cooled engines. Perfect for fixing most leaks.

STOP HOLES & CRACKS: Our unique formula seizes every hole and crack in one easy step, permanently sealing them without compromising engine efficiency. Say goodbye to coolant leaks and engine cooling issues.

EASY TO USE: K-Seal is incredibly simple to apply. No draining or flushing required. Just shake, pour, and go. Add the fluid to your coolant system and run your engine as usual.

VERSATILE COMPATIBILITY: Compatible with all types of antifreeze coolant, K-Seal works in cars and light trucks with up to 12 cylinders. A long-lasting repair for the lifetime of your engine.

PROFESSIONAL-GRADE RELIABILITY: Trusted by mechanics, K-Seal delivers a durable and long-lasting repair. Enhance the reliability and performance of your vehicle's cooling system. Independently verified to meet ASTM D3147 standards and backed by millions of satisfied customers worldwide.