Can anyone tell me a good place to buy this part. I googled it but nothing is coming up that matches it. I keep getting different styles of this part

 

did you test it? did it throw a code? i currently have a code for this and i am testing it before i buy a replacement. my code is 0443.

 

The video that you posted helps but it not for the part I was wondering about. I have codes p400 and p1447. The p1447 says it could be 5 different things. The P0400 is for the egr valve but when I replaced a couple of hoses it went off and then came back with the second code as well. The egr tube was cleaned, then replaced right before I bought the car. I have been playing hell trying to track down what part it is. I have not tested either of the parts yet as I do not have the tools needed to test them