We aren't sure when or if they were ever used but the gauge says it doesn't have any run hours on it. The item "NEW changchai s195nm diesel engine power conversion center DC disconnect combo" is in sale since Monday, September 16, 2019. This item is in the category "eBay Motors\Parts & Accessories\Commercial Truck Parts\Engines & Components\Complete Engines". The seller is "ashleytempleoverbey" and is located in Burkesville, Kentucky. This item can't be shipped, the buyer must pick up the item.