Lycoming O-540
6-CYLINDER HORIZONTALLY-OPPOSED PISTON ENGINE FAMILY BY LYCOMING
Lycoming IO-540; Lycoming AEO-540; Avco Lycoming IO-540; Lycoming IGSO-540; Lycoming VO-540; Lycoming IGO-540; Lycoming O-540-B2B5; Textron Lycoming O-540-H2B5D; Lycoming AEIO-540; Lycoming IO-540-K1A5; Lycoming O-540-FlB5; Lycoming IO-540B4B5; Lycoming IO-540-M1B5D; Lycoming IO-540-C4B5; Lycoming TIO-540-AA1AD; Lycoming IO-540-D (Special); Lycoming AEIO-540-Z1.B5D; Lycoming O-540-4A5; Lycoming IO-540-C4D5; Lycoming O-540-J; Lycoming AEIO-540-L1 B5D; Lycoming TEO-540-A1A; Lycoming AEIO-540-DA45; Lycoming AEIO-540-D4A5; Lycoming TIO-540; Textron Lycoming AEIO-540-L1B5; Lycoming O-540-E4A5; Lycoming IO-540 G1D5; Lycoming IO-540-K1A-5; Textron Lycoming O-540-E4A5; Textron Lycoming AEIO-540-D4A5; Lycoming TEO-540C1A; Lycoming IO-540-H2A5; Lycoming TIO-540J; Lycoming AEIO-540-L1B5; Lycoming AEIO-540-EXP; Lycoming AEIO-540-L1B5D; Avco Lycoming AEIO-540-K1K5; Textron Lycoming AEIO-540-K1K5; Lycoming O-540-E4C5; Lycoming IO-540-K1B5; Lycoming IO-540-AE1A5
The Lycoming O-540 is a family of air-cooled six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engines of 541.5 cubic inch (8,874 cc) displacement, manufactured by Lycoming Engines.