Hello. G37 coupe and G37 sedan. Do they have the same dashboard?

What year?

2008 coupe and 2013 sedan

Good question. I test drove the Sedan and the Coupe before deciding on a 2012 G37 Coupe. The interior dimensions of the front appear to be similar on both, but there MAY be slight variances since of the body style differences, but knowing Nissan/Infiniti, they may very well be the same size to make manufacturing coupe and sedan less costly. Here's a coupe of pics of both interiors though...Here's the 2013 sedan:

I need only this part and maybe this is similar. What do you think?

Sounds like you may be salvaging this part from an '08 Coupe to put in your 2013 Sedan? There's a good possibility that it may fit without any problems, but I'd recommend taking this question to an Infiniti G online forum and asking some of the gearheads on there. I just got my Infiniti + I'm definitely not an auto parts guru...lol! Best of Luck to you!