Lenco Marine 15180 001 Pro Control Auto Replacement IMU EPARUDD3 The HST WSU is a 83 200 The HST WSU is a 83 200 kHz transducer with a 20 foot cable and a built in temp sensor Parts Required:Single Engine Dual Stations:1 DS Gear Unit (207573)1 Station Selector Unit (204993)1 DS Throttle Unit (177030)1 cable from Selector to DS Gear Unit (CCX633xx)1 cable from Station 1 to DS Gear Unit (CCX633xx)1 cable from Station 2 to DS Gear Unit (CCX633xx)1 cable from DS Gear Unit to transmission (CCX633xx)1 cable from Station 1 to DS Throttle Unit (CCX633xx)1 cable from Station 2 to DS Throttle Unit (CCX633xx)1 engine adapter kit for control cables (unless provided by mfg)Dual Engine Dual Stations:2 DS Gear Unit (207573)1 Station Selector Unit (204993)2 DS Throttle Unit (177030)2 cables from Selector to DS Gear Unit (CCX633xx)1 cable from Port Station 1 to DS Gear Unit (CCX633xx)1 cable from Starboard Station 1 to DS Gear Unit (CCX633xx)1 cable from Port Station 2 to DS Gear Unit (CCX633xx)1 cable from Starboard Station 2 to DS Gear Unit (CCX633xx)2 cables from DS Gear Units to transmissions (CCX633xx)1 cable from Port Station 1 to DS Throttle Unit (CCX633xx)1 cable from Starboard Station 1 to DS Throttle Unit (CCX633xx)1 cable from Port Station 2 to DS Throttle Unit (CCX633xx)1 cable from Starboard Station 2 to DS Throttle Unit (CCX633xx)2 engine adapter kits for control cables (unless provided by mfg) Description: Pro Control Auto Replacement IMU Replacement IMU (Inertial Measurement Unit)