PROFESSIONAL COOLANT LEAK REPAIR : Wonderweld is a professional cooling system repair product that’s designed to fix small cracks and holes in the cylinder head, engine block and head gasket, with no clogging or damaging effect. PERMANENT LEAK REPAIR: Wondarweld is a professional, heavy-duty repair solution that’s suitable for all engine types. It permanently seals small holes & cracks in the engine block, head gaskets and water pump gaskets, restoring integrity. AVOID COSTLY REPAIRS: With the rising cost of car replacement parts, save yourself the money and hassle of taking your car to the garage with Wondarweld Leak Repair. We have used our technical know-how to save you time and money. PIONEERING COOLANT REPAIR: Early cars experienced problems as people got used to the technology. Many cars suffered cracked cylinder heads due to people not using anti-freeze, leading to leaks. To solve this problem, Douglas Holt launched Wondarweld. OVER 100 YEARS OF EXCELLENCE: At Holts, we have spent over a century offering solutions to your car troubles to make your life easier and stress free. If you want the perfect tools to maintain, repair or clean your vehicle, we have what you need. Holts Holts Wondarweld 500ml Seals