With this Smithsonian kit, you can build a working model engine that is battery operated and simulates a real car motor. The completed engine has more than 100 moving parts!!! Valves rock, spark plugs fire, and pistons drive the crankshaft...just like the real thing! This is a screw-together model that's fun and easy to build. The screwdriver is included. Requires two ""AA"" batteries. Ages 8 and up. |
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