Continental IO-520-A Engine – For Cessna 206 and Classic High-Performance Singles

The Continental IO-520-A is a 285-horsepower, fuel-injected, air-cooled aircraft engine built for rugged performance in utility and personal aircraft. Most commonly installed in the Cessna 206 (including U206 and P206 variants), the IO-520-A is also found in Cessna 210D-F, the Aero Commander 200D, and select Bellanca Viking 300 aircraft.

This engine offers excellent high-altitude performance and dependable reliability in demanding flight profiles. Whether you’re flying in backcountry conditions or upgrading a legacy platform, the IO-520-A delivers robust torque and longevity.

Aircraft Applications

• Cessna 206 (U206, P206A, P206B)
• Cessna 210D, 210E, 210F
• Aero Commander 200D
• Bellanca Viking 300

Engine Specifications

• Power: 285 HP @ 2700 RPM
• Fuel System: Continental continuous-flow fuel injection
• Displacement: 520 in³ (8.5 L)
• Cylinders: 6-cylinder, horizontally opposed
• Cooling: Air-cooled
• Compression Ratio: 8.5:1

What We Need to Know to Properly Spec Your Engine

• New or rebuilt?
• Oil Cooler Type: 8.88" decongealing or 9.82" oil cooler?
• Oil Drain Plug Location: Where is your drain plug located (important for airframe compatibility)?
• Charging System: Do you have an alternator or a generator?

Continental RFQ Process

Air Power can quote most IO-520-A specs immediately. If your configuration is uncommon or infrequently built, we will submit a Request for Quote (RFQ) to Continental for an accurate price and lead time.

• Typical turnaround: 5–7 business days
• Includes: Spec confirmation, factory lead time, and final price

Why Air Power?

As Continental’s preferred global distributor, Air Power offers expert configuration support, competitive pricing, and deep inventory access. We help ensure your engine is the correct match for your aircraft’s systems and airframe—and deliver it on time, every time.

Request a quote today or contact our engine sales team to get started on your IO-520-A replacement or upgrade.