This manual covers the Iveco N45 ENT and N67 ENT engines, designed to meet Tier 3 emission standards. These engines are engineered for reliability and performance, suitable for a range of industrial applications. The N45 ENT features a 4.5-liter displacement, while the N67 ENT offers a larger 6.7-liter displacement, both likely incorporating common rail fuel injection and turbocharging for efficient power delivery. Their robust construction ensures durability in demanding operational environments. This comprehensive Repair/Service Manual, presented in English, provides essential information for maintaining and repairing your Iveco N45 ENT or N67 ENT engine. It details general and technical specifications, overhaul procedures, and industrial application guidance. Routine maintenance, including filter replacement and coolant checks, is covered, with specific intervals and fluid capacities to be found within. This manual is designed to assist owners and technicians in ensuring the optimal performance and longevity of these Tier 3 engines.