[jman37]

I am having this same problem, what is the part name or part number I can look up to get this gasket replaced?

BC3Z8C387B - Ford Gasket. Housing. Thermostat. 6.7 LITER. 6.7 | Lakeland Ford Online Parts, Lakeland FL

Genuine Ford Part # BC3Z8C387B (BC3Z-8C387-B) - Gasket. Housing. Thermostat. 6.7 LITER. 6.7 LITER DIESEL. Fits F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, F-550 Super Duty. Ships from Lakeland Ford Online Parts, Lakeland FL

parts.lakelandford.com

Fel-Pro 6.7L Power Stroke 11-19 Coolant Crossover Pipe Gasket Set

Fel-Pro 6.7L Power Stroke 11-19 Coolant Crossover Pipe Gasket Set Meets or exceeds all original equipment specifications Application specific, providing unsurpassed quality for a seal you can trust Validated for fit, form, and function Engineered for the sealing repair environment Each Fel-Pro...

rcdperf.com