Engine year interchange?

[Elvis' jeep]

Thank you for the replies

I found a fairly low mileage engine but it’s an 06. It is complete with everything. My Jeep is an 04. Both are 4.0

Will it drop in or have to be modified? Not very well versed yet and I noticed 05/06 engines are sometimes differentiated.

Sorry to post the same ? twice but I was not sure I would bet an answer
Thank you

 

[bedhed]

Thank you for the replies

I found a fairly low mileage engine but it’s an 06. It is complete with everything. My Jeep is an 04. Both are 4.0

Will it drop in or have to be modified? Not very well versed yet and I noticed 05/06 engines are sometimes differentiated.

Sorry to post the same ? twice but I was not sure I would bet an answer
Thank you

I know for sure that the '06 engine will have the infamous oil pump drive assembly, unlike your '04. Quite the heap they turned out with that part.

Aside from that, I'm not aware of any engine differences.