Model Variants (Including Prototypes)
Ka-14 - Prototype Model Designation of which 6 examples were produced.
A5M1 - Fitted with Kotobuki 2 KAI series engine of 850 horsepower; Japanese Navy production model.
A5M2/2a - Increase Powerplant Output; based on the A5M1 model series.
A5M2b - Fitted with Kotobuki 3 series engines of 640 horsepower.
A5M3a - Prototype Models fitted with Hispano-Suiza 12Xcrs series engines of 601 horsepower.
A5M4 - Based on the A5M2b; enclosed cockpit; fitted with Kotobuki 41 KAI series engines.
A5M4-K - Two-Seat Trainer based on the A5M4 model; 103 examples produced.
Ki-18 - Based on the A5M; fitted with Kotobuki 5 series engine of 550 horsepower; single prototype example.
Ki-33 - Based on the Ki-18 model; enclosed cockpit; only two examples produced.