2015 RAm 3500 that is equipped with 6.7 Cummins diesel

As stated, you can get a 3500 SRW or 3500 DRW with the Cummins diesel engine, or with a gas engine....As also stated, go to a Ram dealership and look at the trucks, I would imagine that most of the 2500's and 3500's will have the diesel engine in them...The 3500 SRW truck will come with only one gearing with the Cummins, a 3.42...The 3500 Dually with the Cummins can be had with the 3.42, 3.73 or the 4.10...

Just look at the window sticker...heck, look at the badging on the front fenders, they'll be a BIG C with Cummins written out on it...