The extreme cold weather kits include the appropriate block heater, step by step installation instructions and all necessary mounting hardware for an extra degree of extreme weather protection. This kit is to be used in conjunction with the appropriate cold weather kit that contains the necessary battery warmer assembly. If not done already, the oil must be replaced with the appropriate synthetic oil. It is important to note that it is recommended that an authorized dealer install the extreme cold weather kit as improper installation procedures can inhibit proper generator function.