3936180, Cylinder Head Cummins 6C Replacement

3936180, Cylinder Head Cummins 6C replacement. Brazil with valves
Made in Brazil, aftermarket, not original Cummins. 21 inch air intake opening.
2 intake valves have some pitting on the face (see photos).
NSN 2815015088065
Specifications:
Manufacturer: Cummins
Model: 6C
Mfg Number: 3936180
NSN: 2815-01-508-8065
Condition: New
Surplusman No. 148-6937-369
Price: -Sold