Copper Anti-Seize, 8 oz brush top bottle

For hot, stubborn fasteners, this compound is made to help prevent galling and seizing while also fighting corrosion, and it is intended to hold up under high-temperature conditions.

Exhaust hardware is exactly the kind of application this compound handles well. High heat, constant expansion and contraction, and metal-on-metal contact are what cause those bolts to lock up over time. Coating the threads before installation gives them a buffer against galling, corrosion, and the kind of cold-welding that makes removal such a nightmare later. It works across industrial maintenance, vehicle maintenance, and electrical maintenance contexts, so yeah, your exhaust bolts are squarely in the wheelhouse here.