The ES Evolution Series of locomotives are built by GE Transportation Systems and designed to meet the U.S. EPAs Tier 2 locomotive emissions standards that took effect in 2005. These Evolution Series locomotives are equipped with AC traction motors and are powered by a newly designed GEVO12 12 cylinder engine that produces the same power as the 16 cylinder AC4400CW, but with fewer emissions and greater fuel economy. It also carries a redesigned airtoair dualfan heat exchanger, which gives it its distinct oversized radiator a common spotting feature for these new locomotives. While the AC version has proven to be the overall most popular iteration of the GEVO, quite a few railroads elected to use the DC versions of these engines, including the BNSF Railway, Canadian National, and CSX. The C4 is a variant of the ES44AC, using an A1AA1A wheel arrangement with an idler axle in the center of each truck vs. the allwheel power of its ES44AC brethren. This gives the engines the stability benefits of a sixaxle truck while reducing the number of traction motors from 6 to 4. Features. Multiple body styles to reflect different as delivered railroad specifications. Powerful fivepole KATO motor with dual brass flywheels. Directional Headlight and illuminated, preprinted number boards. Illuminated ditch lights. Kato magnetic knuckle coupler. Drop in DCC compatible with the Train Control Systems K1D4 and Digitrax DN163K1CSpecifications. Gauge N. Scale 1160 Scale. Grade C10 MintNEW. Material Plastic. Model GE ES44AC. Color Yellow. Franchise Union Pacific. Train Operating Company Union Pacific. Rail System TwoRail System. Control System DCC Ready. Vintage No. Year Manufactured 2028. Age 14. Gender Boys Girls. Theme Transportation. Country of Manufacture Japan