The 4-inch mobile pump coupled to a DEUTZ TCD 2.9 L4 Diesel Oxygen Catalyst engine from Pioneer Pump is designed for Tier 4 Final compliance. This water-cooled four-cylinder in-line engine has a simple exhaust aftertreatment. It is electrically controlled and has cooled, external exhaust gas recirculation with no need for regeneration cycles. The engine’s DVERT oxidation catalyst (DOC) enables maintenance-free operation under all ambient conditions. The package eliminates unneeded peripheral parts and adds peripherals designed to make the engine suited to run under the rigorous demands of nonstop pumping. It is available as a standard-production solution. 503/266-4115; www.pioneerpump.com.