Bar's Leaks 1111 Block Seal Permanent Head Gasket Fix 24 oz.
Stops block leaks
Seals cracked cylinder heads and blocks
Repairs blown head gaskets
Contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps & cracks and harden to permanently stop leaks.
K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair
Just Pour & Go - No Need for Expensive Head Gasket Repairs - The Safe and Easy Way to Fix a Coolant Leak
Fixes blown head gaskets, cracked heads and blocks
A permanent repair, guaranteed for the lifetime of the engine
Scientifically Tested - K-Seal is the only product to have been successfully tested by the equipment at Brighton University and classes as meeting the demands of ASTM D3147
If product did not seal head gasket leak, the system might be Over-pressurized, which causes back pressure and doesn't allow the product to reach the problem area, on this page below under Technical Specification is a PDF Guide with instructions to follow to complete the repair successfully
K&W 401224-6 FiberLock Head Gasket & Block Repair - 32 Fl Oz
Easy Pour and Go Formula!
Permanently fixes head gaskets, engine blocks, cooling systems, and cylinder heads.
"Contains 3 unique technologies.
Military-Strength Fibers create multi-layer repair over cracks with a web-like weave.
Nanotechnology permanently fixes the smallest cracks and crevices.
Cool-X Conditioner - lowers operating temperature as it circulates through cooling system."
Seals larger holes with less fluid loss than competitive products as proven by lab test (ASTM D6107)