Smithsonian Motor-Works STEM 4-Cylinder Working Engine Building Kit – New in Box

Up for sale is a brand-new, factory-sealed Smithsonian Motor-Works 4-Cylinder Engine STEM Model Kit. This hands-on science and engineering project allows kids, teens, and auto enthusiasts to build a fully functional, battery-operated working model of a 4-cylinder internal combustion engine. 

Watch the moving pistons drive the crankshaft, see the valves rock, and observe the spark plugs firing via battery-operated lights through the clear engine casing! 

Product Highlights & Specifications:

Interactive Working Model: Features battery-operated moving parts and light-up spark plugs simulating real engine timing. 

Transparent Housing: Clear engine block allows full visual observation of the pistons, crankshaft, timing belt, fan, and rocker arms in motion. 

Educational STEM Learning: Perfect hands-on physical science and engineering project introducing mechanical concepts for ages 8 and up. 

Included Poster: Comes with a large 35" x 23" (88.9 cm x 58.4 cm) full-color educational poster and detailed step-by-step assembly instructions. 

Requires: 2 AA (1.5V) batteries, scissors, and a screwdriver (not included). 

Condition Notes:

New in Box (NIB). Contents are 100% complete and unused inside factory-sealed or original retail packaging. Outer box is crisp with clean edges and bright graphics. (Please review high-resolution photos for exact packaging condition).