The Lycoming IO-540 series is a family of air-cooled, horizontally opposed, six-cylinder aircraft engines produced by Lycoming Engines. These engines are widely used in general aviation aircraft, particularly in single-engine and twin-engine planes. The IO-540 series is known for its reliability, power output, and versatility, making it a popular choice for a variety of aircraft applications.
Part Number
| New |
Rebuilt |
Overhaul |
| ENPL-RT8481 |
RENPL-RT8481 |
HENPL-RT8481 |
| ENPL-RT8873 |
RENPL-RT8873 |
HENPL-RT8873 |
| ENPL-RT9544 |
RENPL-RT9544 |
HENPL-RT9544 |
| ENPL-RT10221 |
RENPL-RT10221 |
HENPL-RT10221 |
| ENPL-RT10231 |
RENPL-RT10231 |
HENPL-RT10231 |
| ENPL-RT10597 |
RENPL-RT10597 |
HENPL-RT10597 |
| ENPL-RT10766 |
RENPL-RT10766 |
HENPL-RT10766 |
| ENPL-RT10148 |
RENPL-RT10148 |
HENPL-RT10148 |
| ENPL-RT10598 |
RENPL-RT10598 |
HENPL-RT10598 |
| ENPL-RT10586 |
RENPL-RT10586 |
HENPL-RT10586 |
| ENPL-RT10584 |
RENPL-RT10584 |
HENPL-RT10584 |
| ENPL-RT9954 |
RENPL-RT9954 |
HENPL-RT9954 |
| ENPL-RT7245 |
RENPL-RT7245 |
HENPL-RT7245 |
| ENPL-RT8303 |
RENPL-RT8303 |
HENPL-RT8303 |
| ENPL-RT8458 |
RENPL-RT8458 |
HENPL-RT8458 |
| ENPL-RT8621 |
RENPL-RT8621 |
HENPL-RT8621 |
| ENPL-RT8991 |
RENPL-RT8991 |
HENPL-RT8991 |
| ENPL-RT9743 |
RENPL-RT9743 |
HENPL-RT9743 |
| ENPL-RT9762 |
RENPL-RT9762 |
HENPL-RT9762 |
| ENPL-RT9784 |
RENPL-RT9784 |
HENPL-RT9784 |
| ENPL-RT9972 |
RENPL-RT9972 |
HENPL-RT9972 |
| ENPL-RT10099 |
RENPL-RT10099 |
HENPL-RT10099 |
| ENPL-RT10523 |
RENPL-RT10523 |
HENPL-RT10523 |
| ENPL-RT10653 |
RENPL-RT10653 |
HENPL-RT10653 |
| ENPL-RT8724 |
RENPL-RT8724 |
HENPL-RT8724 |
| ENPL-RT8916 |
RENPL-RT8916 |
HENPL-RT8916 |
| ENPL-RT10412 |
RENPL-RT10412 |
HENPL-RT10412 |
| ENPL-RT8274 |
RENPL-RT8274 |
HENPL-RT8274 |
| ENPL-RT8468 |
RENPL-RT8468 |
HENPL-RT8468 |
| ENPL-RT8542 |
RENPL-RT8542 |
HENPL-RT8542 |
| ENPL-RT10204 |
RENPL-RT10204 |
HENPL-RT10204 |
| ENPL-RT10692 |
RENPL-RT10692 |
HENPL-RT10692 |
| ENPL-RT6926 |
RENPL-RT6926 |
HENPL-RT6926 |
| ENPL-RT8680 |
RENPL-RT8680 |
HENPL-RT8680 |
| ENPL-RT9781 |
RENPL-RT9781 |
HENPL-RT9781 |
| ENPL-RT9979 |
RENPL-RT9979 |
HENPL-RT9979 |
| ENPL-RT10163 |
RENPL-RT10163 |
HENPL-RT10163 |
| ENPL-RT10394 |
RENPL-RT10394 |
HENPL-RT10394 |
| ENPL-RT10573 |
RENPL-RT10573 |
HENPL-RT10573 |
| ENPL-RT10416 |
RENPL-RT10416 |
HENPL-RT10416 |
| ENPL-RT9816 |
RENPL-RT9816 |
HENPL-RT9816 |
| ENPL-RT9962 |
RENPL-RT9962 |
HENPL-RT9962 |
| ENPL-RT8679 |
RENPL-RT8679 |
HENPL-RT8679 |
| ENPL-RT9801 |
RENPL-RT9801 |
HENPL-RT9801 |
| ENPL-RT10595 |
RENPL-RT10595 |
HENPL-RT10595 |
| ENPL-RT10741 |
RENPL-RT10741 |
HENPL-RT10741 |
| ENPL-RT10761 |
RENPL-RT10761 |
HENPL-RT10761 |
| ENPL-RT10909 |
RENPL-RT10909 |
HENPL-RT10909 |
| ENPL-RT8537 |
RENPL-RT8537 |
HENPL-RT8537 |
| ENPL-RT8584 |
RENPL-RT8584 |
HENPL-RT8584 |
| ENPL-RT8963 |
RENPL-RT8963 |
HENPL-RT8963 |
| ENPL-RT9419 |
RENPL-RT9419 |
HENPL-RT9419 |
| ENPL-RT9718 |
RENPL-RT9718 |
HENPL-RT9718 |
| ENPL-RT10234 |
RENPL-RT10234 |
HENPL-RT10234 |
| ENPL-RT10248 |
RENPL-RT10248 |
HENPL-RT10248 |
| ENPL-RT10538 |
RENPL-RT10538 |
HENPL-RT10538 |
| ENPL-RT8859 |
RENPL-RT8859 |
HENPL-RT8859 |
| ENPL-RT9371 |
RENPL-RT9371 |
HENPL-RT9371 |
| ENPL-RT6625 |
RENPL-RT6625 |
HENPL-RT6625 |
| ENPL-RT9914 |
RENPL-RT9914 |
HENPL-RT9914 |
| ENPL-RT10306 |
RENPL-RT10306 |
HENPL-RT10306 |
| ENPL-RT8426 |
RENPL-RT8426 |
HENPL-RT8426 |
| ENPL-RT8581 |
RENPL-RT8581 |
HENPL-RT8581 |
| ENPL-RT8969 |
RENPL-RT8969 |
HENPL-RT8969 |
| ENPL-RT8972 |
RENPL-RT8972 |
HENPL-RT8972 |
| ENPL-RT9386 |
RENPL-RT9386 |
HENPL-RT9386 |
| ENPL-RT9591 |
RENPL-RT9591 |
HENPL-RT9591 |
| ENPL-RT9788 |
RENPL-RT9788 |
HENPL-RT9788 |
| ENPL-RT10025 |
RENPL-RT10025 |
HENPL-RT10025 |
| ENPL-RT10212 |
RENPL-RT10212 |
HENPL-RT10212 |
| ENPL-RT10324 |
RENPL-RT10324 |
HENPL-RT10324 |
| ENPL-RT10397 |
RENPL-RT10397 |
HENPL-RT10397 |
| ENPL-RT10645 |
RENPL-RT10645 |
HENPL-RT10645 |
| ENPL-RT8279 |
RENPL-RT8279 |
HENPL-RT8279 |
| ENPL-RT8450 |
RENPL-RT8450 |
HENPL-RT8450 |
| ENPL-RT10114 |
RENPL-RT10114 |
HENPL-RT10114 |
| ENPL-RT8892 |
RENPL-RT8892 |
HENPL-RT8892 |
| ENPL-RT10229 |
RENPL-RT10229 |
HENPL-RT10229 |
| ENPL-RT10321 |
RENPL-RT10321 |
HENPL-RT10321 |
| ENPL-RT8346 |
RENPL-RT8346 |
HENPL-RT8346 |
| ENPL-RT10762 |
RENPL-RT10762 |
HENPL-RT10762 |
| ENPL-RT8582 |
RENPL-RT8582 |
HENPL-RT8582 |
| ENPL-RT7468 |
RENPL-RT7468 |
HENPL-RT7468 |
| ENPL-RT9800 |
RENPL-RT9800 |
HENPL-RT9800 |
| ENPL-RT8658 |
RENPL-RT8658 |
HENPL-RT8658 |
| ENPL-RT9343 |
RENPL-RT9343 |
HENPL-RT9343 |
| ENPL-RT10697 |
RENPL-RT10697 |
HENPL-RT10697 |
| ENPL-RT7027 |
RENPL-RT7027 |
HENPL-RT7027 |
| ENPL-RT8935 |
RENPL-RT8935 |
HENPL-RT8935 |
| ENPL-RT10241 |
RENPL-RT10241 |
HENPL-RT10241 |
| ENPL-RT10344 |
RENPL-RT10344 |
HENPL-RT10344 |
| ENPL-RT8914 |
RENPL-RT8914 |
HENPL-RT8914 |
| ENPL-RT9988 |
RENPL-RT9988 |
HENPL-RT9988 |
| ENPL-RT8554 |
RENPL-RT8554 |
HENPL-RT8554 |
| ENPL-RT5243 |
RENPL-RT5243 |
HENPL-RT5243 |
| ENPL-RT9641 |
RENPL-RT9641 |
HENPL-RT9641 |
| ENPL-RT9766 |
RENPL-RT9766 |
HENPL-RT9766 |
| ENPL-RT9785 |
RENPL-RT9785 |
HENPL-RT9785 |
| ENPL-RT8838 |
RENPL-RT8838 |
HENPL-RT8838 |
| ENPL-RT9551 |
RENPL-RT9551 |
HENPL-RT9551 |
| ENPL-RT9570 |
RENPL-RT9570 |
HENPL-RT9570 |
| ENPL-RT10150 |
RENPL-RT10150 |
HENPL-RT10150 |
| ENPL-RT10227 |
RENPL-RT10227 |
HENPL-RT10227 |
| ENPL-RT10410 |
RENPL-RT10410 |
HENPL-RT10410 |
| ENPL-RT9493 |
RENPL-RT9493 |
HENPL-RT9493 |
| ENPL-RT9494 |
RENPL-RT9494 |
HENPL-RT9494 |
| ENPL-RT7209 |
RENPL-RT7209 |
HENPL-RT7209 |
Key Features of the Lycoming IO-540 Series:
1.Configuration:
Horizontally opposed (flat-six) configuration.
Six cylinders, air-cooled.
2.Displacement:
541.5 cubic inches (8.87 liters).
3.Power Output:
Depending on the specific model, power output ranges from 235 to 300 horsepower.
Some turbocharged versions can produce even higher power outputs.
4.Fuel System:
Fuel-injected (denoted by the "IO" in the name, which stands for "fuel-injected, opposed"Provides better fuel efficiency and performance compared to carbureted engines.
5.Applications:
Commonly used in popular aircraft such as the Cessna 182, Piper PA-32 Cherokee Six, Van's RV-10, and many others.
Suitable for both fixed-wing aircraft and experimental/homebuilt aircraft.
6.Weight:
Weighs approximately 320 to 350 pounds (145 to 159 kg), depending on the model and accessories.
7.Reliability:
Known for its durability and long service life when properly maintained.
Regular maintenance and adherence to manufacturer guidelines are critical for optimal performance.
Variants:
The IO-540 series includes several models, such as the IO-540-A, IO-540-B, IO-540-C, and more.
Variations include differences in horsepower, compression ratios, and accessory configurations.
Common Aircraft Using the IO-540 Series:
Cessna 182 Skylane
CessnaT 206H
Robinson R44
Gipsaero GA8
Piper PA-32 Cherokee Six
Van's RV-10
Kitty Hawk LE500
Aerostar 600
Lancair IV
Maintenance and Operation:
- Regular oil changes, inspections, and adherence to Lycoming's service bulletins are essential for maintaining engine health.
- Proper break-in procedures are critical for new or overhauled engines to ensure longevity.
- Pilots and mechanics should monitor engine parameters (oil pressure, temperature, etc.) during operation to detect any potential issues early.
Performance Considerations:
- The IO-540 series engines are known for their smooth operation and consistent power delivery.
- Fuel-injected models offer better altitude performance and fuel efficiency compared to carbureted engines.
- Turbocharged versions (e.g., TIO-540) are available for high-altitude operations.
The Lycoming IO-540 series remains a cornerstone of general aviation, offering a balance of power, reliability, and efficiency for a wide range of aircraft.
Contact us for prices.
Product Tags:
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Lycoming IO-540 Horizontally Opposed Aircraft Engine Six Cylinder Images
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