K Seal Ultimate Head Gasket Repair & Stop Leak - 472 ml

K-Seal’s unique formula is the only coolant leak and head gasket repair fluid to be scientifically tested and compliant with the ASTM D3147 standard. If K-Seal ULTIMATE does not fix your head gasket failure, cracked block or porous block you can claim a full refund or a replacement bottle from K-seal themselves.