F 550 2WD Super Duty V8-7.3L DSL Turbo VIN F (2002)
Intercooler: Service Precautions
CAUTION: Care must be taken not to melt the fins or the tube-to-header braze joint. If welding near the core, shield the core with a large steel plate.
This will protect it from sparks and weld splatter and will act as a heat sink.