Model 145REOZT4 and 175REOZT4 mobile diesel generators from Kohler Power Systems are EPA-emission certified for non-road use and feature a DOT-certified enclosed trailer. Both units have John Deere Tier 4 Final 6.8 liter engines. The 145REOZT4 is capable of a 130 kW standby rating while the 175REOZT4 is capable of a 154 kW standby rating. Both models have 24-hour runtime fuel tanks, external emergency stop, stainless steel door latches and hinges, 110 percent environmental containment, single-point lifting eye and cold weather package. 800/544-2444; www.kohlerpower.com.