This rear view mirror is a direct replacement for the 2015 GMC Sierra Denali 2500. It is made of factory reflective glass and comes with a backup rearview inside windshield mount. The mirror is an OEM factory spec and has a manufacturer warranty of 90 days. The part number is 13584893 and the stock number is 0787M. This item is great for hot street rod restoration modifications and has no core charge. Interchange part number is 267-194 and the tag number is 504043. The mirror is designed for the front placement on the vehicle.