Perkins Engines completes its Tier 4 Interim/Stage IIIB product range with the 854 Series four-cylinder, 3.4-L engine. The 854 Series offers improved power density and compact size for custom requirements in any application. Expanding the range of compact diesel engines, the 854E produces 45 to 86 kW (60 to 115 hp) and benefits from a common-rail fuel-injection system, smart wastegated turbocharger, and aftercooler, all regulated by electronic controls to improve performance and fuel consumption. Developed with Fiat Powertrain Technologies, the engine offers a peak torque up to 420 N·m (310 lb·ft) and will be available in the 2200 to 2500 rpm range. Flexibility and options availability improve packaging for customers, and the range features an emphasis on power density, fuel consumption, and performance to support downsizing and to minimize the need for machine redesign.