Haynes Build Your Own Jet Engine Fully Working Model Kit

Haynes Build Your Own Internal Combustion Engine

Jet Engines: Fundamentals of Theory, Design and Operation

Build Your Own Toys for Boys, Adults & Girls, STEM Toy with Sound Lights V8 Motor Model Engine + Traffic Lights Construction Set w/ 300+ pcs. Hobby Kit Combustion Engine w/DYI Guide.

Playz Train Steam Engine Model Kit to Build for Kids with Real Steam, STEM Science Kits for Kids, Model Engine Kits for Adults and Educational Hobby Gift, Mini Engine Set, Engineering Toy Boys & Girls

Sunnytech Mini Hot Live Steam Engine Model Education Toy Kits DIY (V-Type)

Trends UK Build Your Own V-Twin Motorcycle Engine

Playz V8 Combustion Engine Model Building Kit STEM Hobby Toy for Kids & Adults with DIY Guide & Realistic Parts Including Timing Belt, Cylinder Heads, Spark Plugs, Pistons, Ignition Wires, and More

Discovery Kids DIY Toy Model Engine Kit, Mechanic Four Cycle Internal Combustion Assembly Construction, Comes W/Valves, Cylinders, Hardware & Much More, Encourages STEM Creativity/Critical Thinking

DjuiinoStar Hot Air Stirling Engine Assembly Kit: Spend 30 Minutes to Build Your Own Stirling Engine

Sunnytech Hot Air Stirling Engine Motor Model Educational Toy Electricity Generator Colorful LED (SC001)