The Cummins QSF2.8 is a compact, high-performance 4-cylinder diesel engine delivering 49–74 hp (37–55 kW) and up to 221 lb-ft (300 N·m) of torque. Despite its small size, it matches the power of larger 3.6-liter engines, making it ideal for compact equipment. It meets Tier 4 Final/Stage IV emissions standards using a maintenance-free Diesel Oxidation Catalyst (DOC), eliminating the need for regeneration. Designed for reliability, it features a sculpted cast-iron block, innovative composite materials, and a space-saving Direct Flow™ air cleaner. Maintenance is streamlined with remote ECM access and 500-hour service intervals. The QSF2.8 is engineered for use in demanding environments like construction, agriculture, and material handling—offering a lighter, cleaner, and more efficient solution without compromising on durability or global compliance.