After overhaul on Cummins ISX CM 870

Can you help me out to figure if he installed brand new cylinder head . I took picture of the head and the number stamped on the head is 4925774 . However my invoice from this shop reads 5413782.
When I did some research , I could not find any brand new heads with 4925774 but I was able to locate 5413782 as a brand new head

 

No I did not get charged for the core , but I saw the core sitting in this shop last week . I did not see any other numbers on the cylinder head installed in my truck ....and trying to make sure that what I was charged for went on my truck

 

Our invoice reads only 5413782 there is no NX or EX after , what does this suppose to mean?

 

no but the old cylinder head is still at this shop . I am worry now because they did not cut the counterbore . I was told by other people that this is a big problem because the head may go bad very soon. When asked the mechanic what were the measures he said 11.... but according to what I was told we should have more than one number . I read that every cylinder needs to be measured and we should have different numbers ..... We spent close to 25000 $ and this is unbelievable or what they have done to us.

 

Yes , but is it true ? I was told that the measures needs to be different ....

 

What do you mean?