Lycoming Engines
Lycoming IO-540
The Lycoming IO-540 is a naturally aspirated, fuel-injected, horizontally opposed six-cylinder aircraft engine producing 235 to 350 hp across its many variants. It is one of the most popular piston aircraft engines in general aviation, used in a wide variety of single and twin-engine aircraft. The IO-540 features direct fuel injection for improved mixture distribution and altitude performance compared to carbureted alternatives.
Applications
Pricing & seller quotes
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We aggregate live market pricing and seller quotes for the Lycoming IO-540. Request a quote and our team will send tailored pricing and availability — or sign in if you’re an approved partner.
Specifications
- Power
- 300 shp
- First Run
- 1959
5 more specifications — performance, dimensions, weights and powerplant — are free with an account.
About the Lycoming IO-540
The Lycoming IO-540 is a piston engine from Lycoming Engines, in service since 1959. The Lycoming IO-540 is a naturally aspirated, fuel-injected, horizontally opposed six-cylinder aircraft engine producing 235 to 350 hp across its many variants. It is one of the most popular piston aircraft engines in general aviation, used in a wide variety of single and twin-engine aircraft. The IO-540 features direct fuel injection for improved mixture distribution and altitude performance compared to carbureted alternatives.
It powers aircraft such as the Piper PA-32 Cherokee Six, Piper PA-34 Seneca, Piper PA-44 Seminole, Cessna 182 and others. When buying or overhauling a piston like this, the figures that matter most to operators are time since overhaul, program enrolment (engine maintenance program vs time-and-material), and the cost of the next shop visit — all of which a seller quote should make clear.
Related Piston Engines
Lycoming IO-540: FAQs
What aircraft use the Lycoming IO-540?
The Lycoming IO-540 powers aircraft including the Piper PA-32 Cherokee Six, Piper PA-34 Seneca, Piper PA-44 Seminole, Cessna 182, Beechcraft Bonanza, Robinson R44.
How much power does the Lycoming IO-540 produce?
The Lycoming IO-540 produces 300 shp. Full specifications are listed above.
Who manufactures the Lycoming IO-540?
The Lycoming IO-540 is manufactured by Lycoming Engines, and has been in service since 1959.
How much does a Lycoming IO-540 cost?
Pricing and seller availability for the Lycoming IO-540 — new, overhauled or as a core — are shared with verified HangarMart partners rather than published publicly. Use "Request Pricing" above for current quotes and condition options.