Slightly larger than the G5.9 Gas Series, these natural gas engines provide low emissions in combination with world-class durability and reliability. Two frequencies available in the continuous duty cycle provide you with an economical solution for gas applications. While the G8.3 Gas Low Emissions Series offers the flexibility to run on fuels between propane and natural gas, it also offers the ability to run down to 800 BTU/ft^3 with no derate. Designed to endure even the harshest conditions, these engines ensure the continuous run time that our customers demand.