Lower Unit Nose Cone Assembly with Built-In US2 Transducer PN# 9421-287 Lower Unit Diameter: 4" US2 Cable Fit: 45" Shaft Voltage: 24 & 36 Volt Power: 80 & 101 lb. Thrust For Use With: Fortrex 80-101 lb. thrust / 45" Shaft Maxxum 80-101 lb. thrust / 45" Shaft Ultrex 80 lb. thrust / 45" Shaft Terrova 80-101 lb. thrust / 45" Shaft Ulterra 80 lb. thrust / 45" Shaft Part Number: 9421-287