BlueDevil Products Head Gasket Sealer 1 Quart — Pour-In Engine Leak Repair, No Particles

BlueDevil Head Gasket Sealer 38386 is a liquid engine sealant that repairs and permanently seals head gasket leaks, cracked or warped heads, heater cores, and freeze plugs without clogging the cooling system.

When a head gasket starts leaking, the clock is ticking on overheating, loss of coolant, and escalating repair bills. BlueDevil Products 38386 offers a technician-friendly, pour-in solution formulated to bond with metal, aluminum, cast, alloy, and plastic surfaces so you can stop leaks and keep the engine running while you plan a repair. This one-quart bottle is compatible with gasoline and diesel engines and is designed to leave no particles behind that could clog radiators, passages, or heater cores.

How does this sealer stop leaks without harming my engine?

The formula is liquid-based and contains no solid particulates, so it flows through cooling passages and forms a bond with damaged surfaces rather than depositing granules that can block passages. It chemically adheres to the affected area to create a long-lasting seal, while remaining safe for all common engine metals and plastics.

• No solid particles to clog radiators, heater cores, or passages
• Bonds to metal, aluminum, cast iron, alloys and plastic components
• Designed to cure in the engine environment for a durable seal

What types of leaks and engine damage can this product repair?

BlueDevil 38386 is formulated to address a wide range of cooling-system breaches — from blown head gaskets to small cracks and warped cylinder heads. It also works on heater core leaks and freeze plug failures, giving a versatile stopgap or permanent repair depending on the extent of damage and application instructions.

• Head gasket leaks between cylinders and coolant passages
• Minor cracks or warping in cylinder heads
• Heater core leaks and corroded or failing freeze plugs

How do I use the BlueDevil head gasket sealer safely and effectively?

Application is straightforward: follow the label directions for proper draining and pouring, run the engine for the recommended time to allow the product to circulate and cure, then check for leaks. The product requires adherence to temperature and mixing guidance to form an effective bond without residue.

• Follow instructions for coolant level and engine temperature before application
• Pour into the cooling system as directed, then run engine per label guidelines
• Inspect for leaks and top off coolant after curing cycle

Is the BlueDevil sealer compatible with my vehicle and coolant type?

The sealer works with both gasoline and diesel engines and is compatible with standard cooling systems. For best results, consult the product directions for any cautions about mixing with specific antifreeze formulations or additives to ensure the intended performance.

• Compatible with gasoline and diesel engines
• Safe for common engine metals and plastic components
• Check label for any coolant-specific recommendations or limits

Who is this for: BlueDevil Products 38386 is suited for vehicle owners, DIY mechanics, and professional shops looking for a non-invasive repair option to stop coolant leaks quickly. Choose this product if you want a pour-in sealer that treats head gasket leaks, minor head damage, heater cores, or freeze plugs without introducing particulates into the cooling system. For severe structural engine damage, use this sealer as a temporary fix while arranging mechanical repair or replacement.