Lycoming Starter Ring Gear, 12/14 Pitch, O-540-B, -E and -G Series, 72566
Australian delivery only. Shipping calculated at checkout.
Full shipping policyProduct Info
Lycoming 72566 is a 12/14 pitch starter ring gear. Lycoming lists it for the O-540-B, -E and -G series engines (standard cylinder flange models, parts catalogue PC-115-2) and for the O-540-F1B5 (O-540-F1B5 Illustrated Parts Catalog, June 2025). It is the ring gear only; the starter ring gear support assembly is a separate part.
- Match the gear tooth pitch to the support assembly part number: Lycoming Service Instruction 1141A, Table 1, lists which supports use 12/14 pitch and which use 10/12
- Service Instruction 1141A gives the field replacement procedure: heat the new gear to approximately 450°F (232°C) and fit it with the tooth chamfer upward
- Made in the United States
Tech Spec
Reviews
Own one? Help other pilots by being the first to review this product.
WRITE A REVIEWMore in Aircraft Parts
View all 36
Dill 637 Aircraft Valve Cap - Yellow Brass Schrader VC5 / MS-20813-1
49.418₫ VND
Tempest Aviation Spark Plug UREM37BY (4 Pack)
3.771.791₫ VND
Cleveland Brake Lining Rivets - 50 Pack
305.173₫ VND
Tempest Aviation Spark Plug UREM37BY (Single)
1.139.927₫ VND
Tempest Aviation Spark Plug UREM37BY (Box of 12)
11.315.189₫ VND
Champion Spark Plug RHB37E
1.206.863₫ VND
Cleveland Organic Brake Lining 066-10500
296.138₫ VND
Goodyear Aviation Flight Mate Tube, 302246401, 6.00-6, G15, TR20S
4.288.096₫ VND























































































