K-SEAL K-Seal Ultimate is the simple, permanent fix for blown head gaskets, cracked heads and blocks, and porous engine blocks. Our unique formula works with all water-cooled engines, there is no need to drain or flush your cooling system, and it does not matter what kind of antifreeze or coolant you've used previously. Simply shake the bottle, pour K-Seal Ultimate into your cooling system, and you are back on the road. Just one bottle of K-Seal Ultimate is enough to fix blown head gaskets and cracked heads in cars, SUVs and small trucks. For larger engines, simply use two bottles.

Features

• Will fix blown head gaskets, cracked heads and blocks.
• Mixes with all types of antifreeze and coolants.
• Seals leaks up to 0.635mm in size.
• Simple to use. Just shake, pour and drive.
• A permanent repair, guaranteed for the lifetime of the engine.