The Caterpillar 49.2-kW (66-hp) C2.2 engine offers a 10% increase in power and torque capacity vs. the 2007 model, as well as a 500-h service interval, single-side servicing, and a cold start to -20°C (-4°F). Designed to meet Tier 3, Stage IIIA emissions requirements, the C2.2 offers turbocharged power, improved power takeoff capability, and 24.7% torque backup. The quiet engine is free from visible smoke throughout the operational speed range. Standard engine equipment includes manifold with choice of inlets, 12-V starter motor, 65-A alternator, choice of cooling fans, coolant temperature switch, and glow plug starting aid. The engine block, cylinder head, and exhaust manifold are made of cast iron.