Where is the transmission mount located at on a 2004 dodge neon engine?

The transmission mount on a 2004 Dodge Neon is located at the rear of the transmission, connecting the transmission to the body of the car. It's generally positioned somewhere near the center of the vehicle, underneath the car, but its exact location will be somewhat dependent on whether it's an automatic or manual transmission. You'll need to get underneath the car to see it clearly. It's a relatively large rubber or hydraulic mount that absorbs vibrations.