A fuel water separator filter system, comprising: a first fuel water separator filter configured to be mounted to a chassis of a vehicle and receiving fuel from a fuel tank, the first fuel water separator filter including: a filter head; a filter removably coupled to the filter head, the filter comprising: a filter shell, a filter media disposed within the filter shell, and a water-in-fuel sensor (430, 530) disposed within the filter shell, and an electronic module attached to the filter head of the first fuel water separator filter, the electronic module including: an electronic module chamber comprising a fuel inlet configured to receive fuel and a fuel outlet configured to expel the fuel after being filtered by the filter, a differential pressure sensor disposed within the electronic module chamber, a fuel heater, an electrical contact disposed in the electronic module chamber and configured to be electrically coupled to the water-in-fuel sensor (430, 530) when the filter is coupled to the filter head, and a second fuel water separator filter configured to be mounted to an engine, the first fuel water separator filter supplying filtered fuel to the second fuel water separator filter, and the second fuel water separator filter supplying filtered fuel to an engine; wherein the first fuel water separator is disposed upstream of the second fuel water separator. a first fuel water separator filter configured to be mounted to a chassis of a vehicle and receiving fuel from a fuel tank, the first fuel water separator filter including: a filter head; a filter removably coupled to the filter head, the filter comprising: a filter shell, a filter media disposed within the filter shell, and a water-in-fuel sensor (430, 530) disposed within the filter shell, and an electronic module attached to the filter head of the first fuel water separator filter, the electronic module including: an electronic module chamber comprising a fuel inlet configured to receive fuel and a fuel outlet configured to expel the fuel after being filtered by the filter, a differential pressure sensor disposed within the electronic module chamber, a fuel heater, an electrical contact disposed in the electronic module chamber and configured to be electrically coupled to the water-in-fuel sensor (430, 530) when the filter is coupled to the filter head, and a filter head; a filter removably coupled to the filter head, the filter comprising: a filter shell, a filter media disposed within the filter shell, and a water-in-fuel sensor (430, 530) disposed within the filter shell, and a filter shell, a filter media disposed within the filter shell, and a water-in-fuel sensor (430, 530) disposed within the filter shell, and an electronic module attached to the filter head of the first fuel water separator filter, the electronic module including: an electronic module chamber comprising a fuel inlet configured to receive fuel and a fuel outlet configured to expel the fuel after being filtered by the filter, a differential pressure sensor disposed within the electronic module chamber, a fuel heater, an electrical contact disposed in the electronic module chamber and configured to be electrically coupled to the water-in-fuel sensor (430, 530) when the filter is coupled to the filter head, and an electronic module chamber comprising a fuel inlet configured to receive fuel and a fuel outlet configured to expel the fuel after being filtered by the filter, a differential pressure sensor disposed within the electronic module chamber, a fuel heater, an electrical contact disposed in the electronic module chamber and configured to be electrically coupled to the water-in-fuel sensor (430, 530) when the filter is coupled to the filter head, and a second fuel water separator filter configured to be mounted to an engine, the first fuel water separator filter supplying filtered fuel to the second fuel water separator filter, and the second fuel water separator filter supplying filtered fuel to an engine; wherein the first fuel water separator is disposed upstream of the second fuel water separator.