American Turbine SD-309 Turbine Infomation

• Engine and jet sit four inches farther back for more interior room. 
• Bearing housing held on with six bolts instead of four to better support the rear of the engine. 
• Completely sealed bearing housing water can't come in around the driveshaft. 
• A larger thrust bearing 35% more load capacity 
• Mechanical pumpshaft seal, never needs adjusting. 
• Stronger 416 stainless steel pumpshaft. 
• Shouldered wear ring prevents cavitation. 
• Heat-treated aluminum impeller standard. 
• Secondary wear ring on the rear of the impeller to prevent bowl cavitation. 
• Jet will accept the new 9.5" impeller. 
• Tandem lip seals on the bowl bearings, keeps grease in grit out. 
• Fifth generation bowl, better flow than any other mixed flow pump. 
• High flow nozzle assembly with pressure sealed TFE o-ring that does not leak after a few hours. 
• Nozzle inserts to fine tune your boat for optimum take-off and top speed or part throttle fuel economy, i.e. smaller nozzle, higher pressure, better take-off and top speed, larger nozzle better cruise. 
• HTR reverse bucket, sand lock resistant, self-closing design, much easier on cable and shifter. 
• Highest static reverse of any mixed flow pump. 
• Tiller arm bolted on in two places for added safety. 
• Transom flange cast into suction housing, no need to make plates. 
• Transom flange bolts to transom so the integrity of the transom is increased. 
• Water off-takes are piped through the transom flange with a hose barb requiring less rigging time. 
• Ball and socket type steering kit, easier and quicker to center steering wheel and much nicer looking than two nuts and a piece of rubber hose. 
• Hand hole cover outside of transom for easier access. 
• Intake flange twice as thick for added strength. 
• Power and manual trims available. Light weight, 99 pounds (jet unit).