Available for auction is a set of Hema engine cutaways made in Germany, featuring a 2-stroke and a 4-stroke engine model constructed from cast aluminum, steel, and plastic parts. Designed as educational tools, these cutaways provide an in-depth look at internal engine components and operating principles, making them ideal for mechanical engineering classrooms, automotive training programs, and technical workshops. ![]()
The 2-stroke model, standing 14.5” tall, is mounted on a wooden base, while the 4-stroke model, at 15” in height, rests on a plastic base. These detailed cutaways expose key engine components, including the cylinder, piston, crankshaft, connecting rod, ports, spark plug, carburetor (or fuel injector), cooling system, and exhaust. ![]()
The 2-stroke model highlights the simplicity and high power-to-weight ratio of these engines, demonstrating their unique gas exchange process without valves.![]()
Perfect for teaching small engine maintenance for motorcycles, chainsaws, and lawnmowers, this auction presents a rare opportunity to acquire high-quality instructional models, making for a great addition to any automobilia collection. ![]()
The buyer is responsible for shipping, shipping insurance, handling, and transactional fees. PCARMARKET is not responsible for anything lost or damaged during shipping.

Comments (7)
Highest Offer Received $750.00
Bid in the amount of $525
Bid in the amount of $400
Bid in the amount of $370
Bid in the amount of $275
Bid in the amount of $250
Bid in the amount of $155