Lycoming - Nut-.3125-24 Plain, | STD37

Lycoming produces the most complete line of horizontally opposed, air cooled four, six and eight-cylinder aircraft engines available, with power ranging from 100 to 400 HP. Carbureted or fuel injected, normally aspirated or turbocharged - with a reputation for reaching or exceeding TBO- Lycoming piston engines are the engine of choice for both the home builder and the major airframe manufacturer. From the Robinson R-22 helicopter to the powerful Piper Malibu Mirage, Lycoming piston engines currently power more than half the world's general aviation fleet.