Cummins C12D6RE (12kW) mobile generator set is a Tier 4 Final model designed for the end use customer. The product takes proven core concepts from the Cummins RV group and incorporates them into this model for the North American rental market. Some features of the C12D6RE include a Kubota D1503 diesel engine, built-in self diagnosis system, 24-hour fuel tank and a 1,200-lb. weight.