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OWI OWI-39102 Vroom STEM V8 Model Combustion Engine Set - Black VROOM VROOM! For over one-hundred years the V8 combustion engine has been a part of the rich history of the American automotive industry. With Vroom! Stem V8 Model Combustion Engine budding car enthusiasts, ages twelve and up, will have the opportunity to understand the heart of the automobile. With over 270 pieces, Vroom! Stem V8 Model Combustion Engine, both children and parents alike will be amazed by the realistic engine simulation. After enhancing ones divergent thinking, manual dexterity, and gratifying sense of accomplishment, Vroom! Stem V8 Model Combustion Engine will be the prize trophy on any car lovers desk, shelf, or classroom. With a simple press of the power button, prepare to be amazed. The cooling fan spins, pistons fire up and down, light bu lbs flick on and off in perfect sequence mimicking the air-fuel combustion process, and since it runs on three AA batteries (not included) there is no need to worry about pricy gasoline to enjoy the show. In addition to the mechanical skills acquired through building, Vroom! Stem V8 Model Combustion Engine also includes a detailed introduction in the instruction manual. By reading, children will recognize the difference between an electric motor vs. the powerful V8, and learn about different types of combustion engines. Lastly, the introduction delves into the four stroke cycle through a visual representation of the four steps (Intake, Compression, Power, and Exhaust). Once children build the kit, and read the introduction they will have a full grasp of the science, engineering, and physics that go into this automotive cornerstone. It is never too early for your young mechanic to start learning how a real V8 combustion engine works. Features Vroom STEM V8 Model Combustion Engine Set; Great for kids and a fun game; Specifications Color: Black; Weight: 5 lbs;