This part is commonly Used on models:
39074 Commercial Walk-Behind Mower, Floating Deck, T-Bar, Gear Drive with 36in TURBO FORCE Cutting Unit
39078 Commercial Walk-Behind Mower, Floating Deck, T-Bar, Gear Drive with 48in TURBO FORCE Cutting Unit
30074 Commercial Walk-Behind Mower, Floating Deck, T-Bar, Gear Drive with 36in TURBO FORCE Cutting Unit
30078 Commercial Walk-Behind Mower, Floating Deck, T-Bar, Gear Drive with 48in TURBO FORCE Cutting Unit