Specifications include, but are not limited to: 2.1 Engine and Drive train2.2 Engine: Cummins engine displacement shall be either 9.0 Liter or 12 Liter and specifically designed to operate on compressed natural gas (CNG). Engine shall be rated at 320 horsepower and 1000 lb-ft.of torque. Engine manufacturer’s warranty shall cover all internally lubricated components,gaskets, seals, fuel system parts, and electronic engine management components for a period of not less than 5 years, 150,000 miles, or 4,500 hours whichever occurs first. Complete description of engine warranty shall be provided in bid package.2.3 Starting: Engine starter shall be 12 volt with over- crank protection.2.4 Batteries: Maximum of three (3) AGM type 12-volt threaded post batteries providing a combined total of not less than 2400 CCA at 0o F. Jump start terminals shall be provided in a convenient location outside the battery enclosure. Battery enclosure shall include all available options to minimize corrosive damage to enclosure. A master battery disconnect shall be located on the outside of the battery enclosure with a pilot light indication of when the truck is energized.