I should have scrolled down further before my first response. As someone else noted, it is a G-Mot motor and is still available in certain sizes and displacements from the Black Sheep Squadron in California. I have two or three of the G-Mots as well as several Telcos and several Brown CO2 motorswhich are the best of the lot. I had the good fortune to win free flight power scale four times at the AMA Nats using the Telco Turbo, which was a motor with a self-contained tank and filler unit and did not use all of the exterior plumbing.