It permanently repairs leaks in the head gasket, block, radiator, heater core, freeze plug and water pump casing. Want to know how it works Adding k‑seal to the central heating system can help repair leaks up to 0.6mm in size without the need to drain the system Simply add k‑seal to the heating system where you would normally top up the water. Follow our simple instructions for a permanent repair solution that works with all coolants. Learn how to spot water pump failure symptoms & prevent costly replacements
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