Less than 50 miles on it according to site vendor holcombford who I bought it from. The thing is like new. T4 .81 turbine housing, ported 4"inlet 2.5" outlet compressor housing. It's a journal bearing billet wheel CEA 6766. 1000 obo shipped gifted or + fees. I'm going to a larger turbo for the build so it's no longer needed.