J-B Weld HighHeat Temperature Resistant Epoxy Putty is a professional-grade metal repair solution formulated to withstand extreme temperatures while providing strong, permanent repairs. Designed specifically for engine blocks, exhaust systems, manifolds, headers, and automotive metal components, it offers exceptional heat resistance without compromising bond strength.
Once cured, the putty forms a solid, durable repair that resists cracking, vibration, and thermal expansion. It can be sanded, shaped, drilled, and painted, making it ideal for both professional mechanics and DIY repairs. Perfect for automotive, industrial, and mechanical applications where ordinary epoxies fail under heat.
Withstands extreme high temperatures
Ideal for engine blocks & exhaust repairs
Strong, permanent metal bonding
Fills cracks, holes & surface damage