My experience with powder-coated engine components after five years of driving: the finish holds up well with one important caveat — thermal cycling.

Components that cycle from cold to very hot and back — exhaust manifolds, headers, components on the engine block — will see the powder coat crack and peel after several cycles. This is a chemistry problem, not a quality problem. Powder coat is a thermoplastic film and repeated thermal cycling fatigues it.

For these components, ceramic coating is the correct solution. It's bonded to the metal through a different process that produces a thinner, harder film that resists thermal cycling without peeling.

For components that see indirect heat — brackets, valve covers, intake manifolds — powder coat is appropriate and durable. Know where the heat goes before you choose the finish.