I have had this aircompressor for years on a service truck we are selling. It runs great and pumps air like is should. I think the gas engine is a Kohler in the 13hp range. It pumps a lot of air. I think the tank is around 30 gallons. Electric start. As far as I can tell the compressor may pump around 23cfm. The compressor (Model HGR5-3) itself is a $2000 componet, the total package is around $4000 new when I look them up. I am firm on price.