Rare and superb 4 cylinder, 4 cycle water cooled engine. About 2 cubic inches if I recall. New-Unrun. Overall length about 6-3/4″, Block is 4″ long-2″ wide, 4-1/4″ tall from bottom to top of rockers. Spark plugs for display only and not included. Operates on standard 1/4-32 glow plugs-turns 10000 RPM with ease. Flat $20 USPS priority mail in the lower 48 states. DO NOT MISS THIS ONE