To determine the year of a Kubota M9000 with a serial number of 55037, you typically need to reference the manufacturer's serial number guide, as Kubota's production years can vary. However, serial numbers in the M9000 series generally suggest that this model was produced in the late 1990s to early 2000s. Based on the serial number you provided, it is likely from around 1999 or 2000. For the most accurate information, it's best to consult Kubota's official resources or contact a dealer.