The Isuzu 4Hg1 engine is a reliable and powerful diesel engine designed for commercial vehicles. It features a 4-cylinder, 4.8-liter turbocharged engine with an output of up to 150 horsepower and 300 lb-ft of torque. This engine is built to last, with a durable cast iron block and cylinder head, as well as advanced fuel injection technology for improved efficiency and performance. The Isuzu 4Hg1 engine is the perfect choice for those looking for a reliable and powerful diesel engine for their commercial vehicle.