Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3412C Low Emissions (LE) engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3412C (LE) engines include gas lift, gas gathering, and wellhead gas compression. Cat G3412C (LE) gas engine. Ratings: 475 bkW (637 bhp) @ 1800 rpm are NSPS site compliant capable with customer-provided aftertreatment.