Product overview This is a detailed, simulated dynamic engine model: a mini OHV inline fourcylinder diesel engine that you assemble and operate. The kit combines realistic metal components with functional motion, letting you observe how a real engine runs while providing an attractive mechanical display. Key benefits Handson learning and demonstration: Assembling and operating the model illustrates core engine principles, valve operation, and moving parts in a clear, visible way. Ideal for students, hobbyists, and anyone who wants a practical understanding of internal combustion engine mechanics. Decorative and functional: textured metal parts create an authentic mechanical look suitable for display, while the working motion driven by a motor adds demonstrable realism. Engaging build experience: The 300 plus piece kit delivers a satisfying assembly process from individual parts to a complete working engine, increasing understanding of how components fit and move together. Main features Type: Mini OHV inline fourcylinder diesel model that simulates a real engine Motion: Can be connected to power and driven by a motor so you can observe the running process throughout operation Parts count: Over 300 individual parts for assembly Materials: quality metal parts with textured finish for realistic appearance and durability Documentation: Includes a paper English instruction manual to guide assembly and basic operation What makes this product stand out Functional simulation rather than static display: The model is designed to run under motor power, so moving parts such as pistons and valves can be seen in action. Precision metal components: Metal construction enhances tactile realism and visual authenticity compared with plasticonly kits. Complete assembly experience: The kit format provides an educational project that rewards careful assembly with a working, displayready engine. Use scenarios Classroom demonstration: Use the finished model in engineering, physics, or vocational classes to show valve timing, piston movement, and basic engine operation in a safe, visible way. Hobbyist project and display: Assemble the model at home as a handson workshop project and display it on a shelf or desk to showcase mechanical craftsmanship. Gift for model builders or students: Give as a constructive gift for someone interested in mechanical systems, engineering, or scale model construction. Notes on compatibility and performance The model is designed to be connected to external motor power for operation. Refer to the included English paper manual for assembly steps and instructions on connecting power. Specific motor or power source details are not included with the kit and should be selected to match the connection points shown in the instructions. Contents Over 300 parts to assemble the engine model Paper English instruction manual This kit provides a realistic, functional engine model that combines a handson build, visible mechanical motion, and attractive metal finishes for both educational and decorative uses.