Blue Devil Head Gasket Repair (16 oz)

A blown head gasket usually means a major repair bill — pulling the head, machining surfaces, replacing the gasket, and reassembling. Blue Devil Head Gasket Repair offers a pour-in alternative for situations where a mechanical repair is not practical or as a way to get more life out of an engine before committing to a full teardown.

This 16-ounce formula contains no solid or fibrous particles, which means it will not clog your heater core, radiator, or coolant passages. It works by bonding chemically to metal, aluminum, cast iron, alloy, and plastic surfaces at the leak point. The product is compatible with all types of antifreeze.

Proper preparation is critical for this product to work. The cooling system must be completely flushed so there is no antifreeze remaining — only clean water — before adding the Blue Devil formula. If coolant is still present in the system, the product can harden in the wrong places. After treatment, the system must be flushed again with water to remove any excess product before refilling with your normal coolant. Following the instructions carefully makes a significant difference in results.