The Caterpillar C15 engine, generation JRE1-up, is a robust inline 6-cylinder diesel engine engineered for demanding applications. With a displacement of 15.2 liters and featuring turbocharging, intercooling, and an electronic engine management system, it delivers substantial power and torque, typically ranging from 435-550 horsepower and 1550-1850 lb-ft. Its liquid-cooled design and Electronic Unit Injection (EUI) system contribute to its reliability and efficiency. Designed for heavy-duty trucks, off-highway equipment, and industrial power generation, the C15 is built to withstand rigorous operational demands.

This Parts Book, presented in English and fully illustrated with exploded views, serves as a comprehensive guide for identifying and understanding the components of the Caterpillar C15 engine. It details critical specifications, including oil capacity, and provides essential information for maintenance and repair. While specific service intervals and oil change recommendations should be confirmed based on application and operating conditions, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their C15 engines.