2007 UTILITY, 53 FT Semi-Trailers - Reefer Trailers, 12/16/2013 Engine replaced at TK in San Leandro. 5478 hours on unit when replaced. 9056 5478 = 3578 hours on current engine. I have documentation if needed., Air Ride Suspension, Combination Composition, Aluminum Floor, , L x W x H: 53 x x