This is a Used OEM 6.0 gas engine. This engine will fit Isuzu NPR year ranges from 2017-2020. This engine will also fit GMC W3500 and W4500 year ranges 2017-2020. All engines are tested prior to pulling and will be sold as a complete unit minus bolt ons along with a 90 Day Warranty. If you have any questions or want to know the price and  availability of this great part, our sales team would be glad to take your call at 803-564-3228.    *Picture is for illustration purposes only*