MasterCraft Surf Actuator is the stock actuator for MasterCraft boats. MasterCraft switched to a billet aluminum for this actuator to help reduce water intrusion into the protected casing. Because of the load that the MasterCraft surf system puts on the Actuator. The sealed areas on the plastic Actuator expand and allow the water to enter the casing. Compatible With: 2019 XT25 - Center XT23 - CenterXT22 - Center NXT22 - Port, Starboard, Center NXT20 - Port, Starboard, Center XT21 - Port, Starboard, CenterXT20 - Port, Starboard, Center 2018 X46 - Center X20 - Port & Starboard XT23 - Center XT22 - Center XT21 - Port, Starboard, Center XT20 - Port, Starboard, Center NXT22 - Port, Starboard, Center NXT20 - Port, Starboard, Center 2017 X46 - Port, Starboard, Center X20 - Port, Starboard X10 - Port, Starboard, CenterXT23 - CenterXT21 - Port, Starboard, Center XT20 - Port, Starboard, Center NXT22 - Port, Starboard, Center NXT20 - Port, Starboard, Center 2016 X46 - Port, Starboard, Center X30 - Port, Starboard, Center X20 - Port, Starboard X10 - Port, Starboard, CenterX2 - Port, Starboard, Center NXT22 - Port, Starboard, Center NXT20 - Port, Starboard, Center 2015 X55 - Port, Starboard, Center X46 - Port, Starboard, Center X30 - Port, Starboard, Center X25 - Center X20 - Port, Starboard X10 - Port, Starboard, CenterX2 - Port, Starboard, Center NXT22 - Port, Starboard, Center NXT20 - Port, Starboard, Center 2014 X55 - Port, Starboard, Center X46 - Port, Starboard, Center X30 - Port, Starboard, Center X25 - Center X10 - Port, Starboard, Center X2 - Port, Starboard, Center