500 ‒ Series

  • What do you say about an engine family that ranges in power from 250 hp all the way to 350 hp? Innovative? Versatile? Amazing? How about all of the above? Continental Motors® introduced the first 520 series engine to the world in the Beech Bonanza and the Cessna® Centurion in 1964. The 520 series includes 520 cubic-inch models in either naturally aspirated or turbocharged configurations. The 550 series included 550 cubic-inch models in either naturally aspirated or turbocharged configurations. There are FADEC models available in the 550 series. With the right combination of thrust and efficiency, our 520 and 550-series engines have powered some of the most successful aircraft in general aviation history. 

    Continental Motors 500 Series Engine

    The 500 Series is a family of 6-cylinder, air-cooled, horizontally opposed, direct-drive aircraft engines with hydraulic lifters, 2 pushrod-actuated valves per cylinder, wet oil sump and fuel injection with manual mixture control or FADEC control.


    Certified fuels

    100/100LL (520)
    100/100LL and 94UL avgas (550)

    Displacement

    8514 cm3520 cu.in (520)
    9046 cm3 552 cu.in (550)

    Power

    86.4 to 242.2 kW250 to 325 hp (520)
    209 to 261 kW280 to 350 hp (550)

    Maximum Rated RPM

    2400 to 2850 r/min2400 to 2850 rpm (520)
    2500 to 2700 r/min2500 to 2700 rpm (550)

    Bore

    133.4 mm5.25 in

    Stroke

    101.6 mm4.00 in (520)
    107.95 mm4.25 in (550)

    Compression Ratio

    7.5:1 (turbocharged) and 8.5:1 (naturally aspirated)

    Height

    477 to 1030.22 mm18.78 to 40.56 in (520)
    501.7 to 933.2 mm19.75 to 36.74 in (550)

    Width

    845.57 to 1079.5 mm33.29 to 42.5 in (520)
    852.4 to 1076.7 mm33.56 to 42.39 in (550)

    Length

    933.2 to 1616.2 mm36.74 to 63.63 in (520)
    933.2 to 1215.6 mm36.74 to 47.86 in (550)

    Dry Weight

    165.5 to 253.1 kg364.8 to 558 lbs (520)
    191.2 to 285.0 kg421.6 to 571 lbs (550)

    Turbo and FADEC Model Availability

    Yes (550)

    * Most engine models manufactured after February 2012 have a TBO increase of 200 hours. Engines used in frequent type service have an additional 200 hour increase. See Service Information Letter SIL98-9B for details.

    520 Series Details

    Model Cylinders METO Power @RPM
    (Take off @ RPM)
    Bore x Stroke Displacement Dry Weight
    Basic Engine
    Fuel Grade Compression Ratio Recommended TBO
    IO-520-BB 6 212.5 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 191.9 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 423 lbs
    IO-520-CB, MB 6 212.5 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 188.2 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 415 lbs
    IO-520-D, E, F, K, L 6 212.5 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 194.6 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    285 hp @ 2700 5.25 x 4.00 in 520 cu.in 429 lbs
    IO-520-A, J 6 212.5 kW @ 2700 (22.37@2850) 133.4 x 101.6 mm 8514 cm³ 195.5 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    285 hp @ 2700 (300@2850) 5.25 x 4.00 in 520 cu.in 431 lbs
    TSIO-520-BB,C,DB,H,KB 6 212.5 kW @ 2700  133.4 x 101.6 mm 8514 cm³ 203.7-208.2 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    285 hp @ 2700  5.25 x 4.00 in 520 cu.in 449-459 lbs
    L/TSIO-520-AE 6 186.4 kW @ 2400 133.4 x 101.6 mm 8514 cm³ 172.4 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    250 hp @ 2400 5.25 x 4.00 in 520 cu.in 380 lbs
    TSIO-520-EB 6 223.7 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 203.2 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.00 in 520 cu.in 448 lbs
    TSIO-520-UB 6 223.7 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 203.2 kg 100/100LL 7.5:1 1800 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.00 in 520 cu.in 448 lbs
    TSIO-520-JB, LB, T 6 231.2 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 206.8-223.2 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.00 in 520 cu.in 456-492 lbs
    TSIO-520-NB 6 231.2 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 206.8-223.2 kg 100/100LL 7.5:1 1800 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.00 in 520 cu.in 456-492 lbs
    TSIO-520-G, M, R 6 212.5 kW @ 2600 (234.2@2700) 133.4 x 101.6 mm 8514 cm³ 209.1 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    285 hp @ 2600 (300@2700) 5.25 x 4.00 in 520 cu.in 461 lbs
    TSIO-520-BE 6 231.2 kW @ 2600 133.4 x 101.6 mm 8514 cm³ 296.3 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    310 hp @ 2600 5.25 x 4.00 in 520 cu.in 593.6 lbs
    TSIO-520-P 6 212.5 kW @ 2600 (231.2@2700) 133.4 x 101.6 mm 8514 cm³ 213.2 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    285 hp @ 2600 (310@2700) 5.25 x 4.00 in 520 cu.in 470 lbs
    TSIO-520-AF 6 212.5 kW @ 2600 (231.2@2700) 133.4 x 101.6 mm 8514 cm³ 213.2 kg 100/100LL 7.5:1 1800 hrs or
    12 years
    285 hp @ 2600 (310@2700) 5.25 x 4.00 in 520 cu.in 470 lbs
    TSIO-520-WB 6 242.2 kW @ 2700 133.4 x 101.6 mm 8514 cm³ 203.2-254.0 kg 100/100LL 7.5:1 1800 hrs or
    12 years
    325 hp @ 2700 5.25 x 4.00 in 520 cu.in 448-560 lbs
    GTSIO-520-D, H 6 280 kW @ 3400 133.4 x 101.6 mm 8514 cm³ 219.5 kg 100/130 7.5:1 1600 hrs or
    12 years
    375 hp @ 3400 5.25 x 4.00 in 520 cu.in 484 lbs
    GTSIO-520-L 6 280 @ 3350 133.4 x 101.6 mm 8514 cm³ 219.9 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    375 @ 3350 5.25 x 4.00 in 520 cu.in 485 lbs
    GTSIO-520-M 6 280 kW @ 3350 133.4 x 101.6 mm 8514 cm³ 219.1 kg 100/100LL 7.5:1 1600 hrs or
    12 years
    375 hp @ 3350 5.25 x 4.00 in 520 cu.in 483 lbs

    550 Series Details

    Model Cylinders METO Power @RPM
    (Take off @ RPM)
    Bore x Stroke Displacement Dry Weight
    Basic Engine
    Fuel Grade Compression Ratio Recommended TBO
    IO-550-A 6 223.7 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 187.8 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 552 cu.in 430.7 lbs
    IO-550-B 6 223.7 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 184.2 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 552 cu.in 421.6 lbs
    IO-550-C 6 223.7 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 188.2 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 552 cu.in 433.2 lbs
    IO-550-D, E, F, L 6 223.7 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 192.8 kg 100/100LL 8.5:1 1900 hrs or
    12 years
    300 hp @ 2700 5.25 x 4.25 in 552 cu.in 437.1 lbs
    IO-550-G 6 208.8 kW @ 2500 133.4 x 108.0 mm 9046 cm³ 186.8 kg 100/100LL 8.5:1 2200 hrs or
    12 years
    280 hp @ 2500 5.25 x 4.25 in 552 cu.in 429.0 lbs
    IO/IOF-550-N, P, R 6 231.2 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 194.6-213.2 kg 100/100LL 8.5:1 2200 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.25 in 552 cu.in 429-470 lbs
    TSIO-550-B, E 6 261 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 271.4 kg 100/100LL 7.5:1 1800 hrs or
    12 years
    350 hp @ 2700 5.25 x 4.25 in 552 cu.in 566 lbs
    TSIO-550-C 6 231.2 kW @ 2600 133.4 x 108.0 mm 9046 cm³ 271.4 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    310 hp @ 2600 5.25 x 4.25 in 552 cu.in 565.5 lbs
    TSIO-550-G 6 231.2 kW @ 2700 133.4 x 108.0 mm 9046 cm³ 276.9 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    310 hp @ 2700 5.25 x 4.25 in 552 cu.in 554 lbs
    TSIOL-550-D, J 6 261 kW @ 2600 133.4 x 108.0 mm 9046 cm³ 285.0 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    350 hp @ 2600 5.25 x 4.25 in 552 cu.in 571 lbs
    TSIO-550-K 6 234.9 kW @ 2500 133.4 x 108.0 mm 9046 cm³ 269.3 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    315 hp @ 2500 5.25 x 4.25 in 552 cu.in 537.3 lbs
    TSIOF-550-K, N 6 234.9 kW @ 2500 133.4 x 108.0 mm 9046 cm³ 262.4 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    315 hp @ 2500 5.25 x 4.25 in 552 cu.in 522.8 lbs
    TSIOF-550-P 6 234.9 kW @ 2500 133.4 x 108.0 mm 9046 cm³ 264.9 kg 100/100LL 7.5:1 2200 hrs or
    12 years
    315 hp @ 2500 5.25 x 4.25 in 552 cu.in 555 lbs