Introducing the K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair, a revolutionary solution for head gasket leaks. This 16 fl. oz. bottle of head gasket stop leak is your ultimate solution to costly and time-consuming head gasket repairs. With K-Seal, you have the best head gasket sealer at your disposal, designed to provide a permanent fix for blown head gaskets, cracked heads, and blocks. No need for a professional mechanic ? this is a universal fit product that anyone can use. The K-Seal ST3501 is not just a head gasket leak sealer; it doubles as a block sealer for engines, effectively sealing any coolant leaks. It guarantees a lifetime of reliable performance. What sets K-Seal apart is the simplicity of its application. Just Pour Go ? there's absolutely no need for expensive head gasket repairs. As a head gasket fix, it's designed for ease of use. No need for a head gasket test kit or a head gasket repair kit. This product is a coolant leak sealer and head gasket repair in one, eliminating the need for a separate head gasket test. K-Seal is scientifically tested, and the only product to have been successfully tried by Brighton University, meeting the demands of ASTM D3147. If you're dealing with a head leak, antifreeze coolant stop leak, or need a head gasket additive, choose K-Seal. It's the safe and easy way to fix a coolant leak, and is ideal for use as a head seal, head gasket seal, and head gasket spray. Trust K-Seal for your head gasket repair needs and experience the ultimate in head gasket solutions. PERMANENT REPAIR Our advanced formula with 33 more sealing power than regular KSeal, ensures a longlasting, permanent seal for challenging leaks. Permanently fixes blown head gaskets, cracked heads porous engine blocks in cars STOP HOLES CRACKS With just 1 step our unique formula with ceramic microfibres, will permanently seal leaks up to 0.64mm in size, without any adverse impact on the engine EASY TO USE It requires no draining or flushing; just shake, pour go shake the bottle, add the fluid wherever you top up your coolant run your engine as normal. For larger engines HGVs Plant use 2 bottles VERSATILE COMPATIBILITY Works with all types of coolant compatible with a wide range of vehicle engine materials heavy duty machinery. A permanent fix for the lifetime of the engine PROFESSIONALGRADE RELIABILITY Trusted by mechanics, our sealer treatment delivers a durable longlasting repair. A costeffective head gasket block repair, enhancing the performance of your vehicles cooling system. Weve sold millions worldwide are independently verified by university testing to meet ASTM D3147.