What is the engine model number?

What is the engine model number?

• A. IO-360
• B. O-235-L2C
• C. O-320-D2B
• D. R-1340

Answer: (B)

Engine model numbers encode configuration, displacement, and variant. The letter at the start shows cylinder arrangement: O means horizontally opposed. The number that follows is the displacement in cubic inches. The trailing letters indicate the specific variant within that family. Among the options, the one that matches a 235 cubic inch, opposed-engine design is O-235-L2C. The others correspond to different displacements or configurations: IO-360 is a 360 cu in fuel-injected opposed engine, O-320-D2B is 320 cu in, and R-1340 is a radial engine with 1340 cu in. So the model number that fits the description is O-235-L2C.

Engine model numbers encode configuration, displacement, and variant. The letter at the start shows cylinder arrangement: O means horizontally opposed. The number that follows is the displacement in cubic inches. The trailing letters indicate the specific variant within that family.

Among the options, the one that matches a 235 cubic inch, opposed-engine design is O-235-L2C. The others correspond to different displacements or configurations: IO-360 is a 360 cu in fuel-injected opposed engine, O-320-D2B is 320 cu in, and R-1340 is a radial engine with 1340 cu in. So the model number that fits the description is O-235-L2C.