Premium Solution

CRC FiberLock® uses a unique blend of technologies to provide a permanent fix for cracked heads, blown head gaskets, engine blocks, and cooling systems. FiberLock® combines three unique features to make it the premium choice for a head gasket sealer and permanent block repair:

Nanotechnology

CRC FiberLock® contains nanoparticles small enough to get into cracks and crevices that other products can’t reach. This allows for a stronger head gasket repair that is more solid when permanently hardened to the surface area.

Military-Strength Fibers

The product gets its strength from sodium silicate content, reinforced with military-grade proprietary fibers. When applied to a crack, it forms a web-like weave over it to provide an impenetrable, multi-layer repair.

Cool-X Conditioner

This conditioner circulates in the cooling system after use to lower operating temperatures and improve heat transfer long after the repair is made. This means that not only is the leak repaired permanently, but it also helps to prevent other cracks from appearing in the future by ensuring your engine does not overheat.

Easy to Use

CRC FiberLock® Head Gasket & Block Repair is designed for ease of use. No draining of the coolant system is required for this product to work. The pour and go formula makes it ideal for Do-It-Yourself repairs when you don’t want to hire a professional mechanic. This block sealer is easy to use and cures quickly, so you can be back on the road with a permanent repair in as little as 30 minutes. So stop leaks and start driving today with CRC FiberLock® Head Gasket & Block Repair.