The first person to call thier parts dept. at the dealership wins the information of knowing what this is FIRST, then they would simply share with the rest of the group.

4G7Z-6K775-AA

 

Here you go https://fordparts.com/cart/?pn=4G7Z-...&submit=Search
Qty Part Number Description List Unit Price Price
4G7Z-6K775-AA COOLER ASSEMBLY - ENGINE $939.48 $690.52 $690.52
Subtotal: $690.52
Ground Shipping - $69.05**2-Day Shipping - $103.58**Overnight Shipping - $138.10*APO Shipping - $103.58
Usually in stock, ships within 24-48 hours
Usually ships in 4-5 days
No longer available
*APO Shipping is for overseas military customers ONLY!
**Overnight & 2nd Day shipping charges are approximate.
If shipping charges are more, you will be notified before the order is
shipped for approval.

 

4G7Z6K775AA

COOL ASY-ENG CHG AIR

I'm guessing its an Intercooler of some sorts.

Oh yea, and I cheated, I didnt call - I searched the online fords parts catalog.

 

That's an expensive oil cooler. They stopped carrying it because no one was buying.