Mercruiser Alpha One Sterndrive – For more than 45 years the word “MerCruiser” has meant sterndrive performance. Choose from more than 20 unique drive systems such as our Alpha One, the most popular sterndrive in the world, or our brawny Bravo Series drives. MerCruiser has the perfect drive system for you and your boat.
Maximum Power Capacity | 300 HP (230 kW) |
Lower Unit Design | Low-Drag Hydrodynamic Torpedo |
Maximum Propeller Diameter | 15″ |
Water Inlet Location | Strut |
Clutch Type | Compact Dog Clutch with F-N-R |
Available Gear Ratios | 1.47, 1.62, 1.81, 2.00, 2.40:1 |
Counter-Rotation | Optional, Except 2.40:1 Ratio |
Upper Unit Gear Set | Precision Shimmed, Spiral Bevel Gear |
Lower Unit Gear Set | Precision Shimmed, Spiral Bevel Gear |
Propshaft Material | Heat-Treated Stainless Steel |
Standard Exhaust Outlet | Through Propeller |
Propeller Hub Type | Flo-Torq II Hub |
Recommended Lubricant | Mercury High-Performance Gear Lube |
Monitoring System | Engine-Mounted Lube Monitor w/Audio Warning or Engine Guardian® |
Corrosion Warranty | 3-Year, Limited |
Housing Construction | Corrosion Resistant XK 360 Aluminum Low-Copper Alloy |
Corrosion Protection | Tri-Paint, Anodes & MerCathode® as a Kit |
Anode Type | Ultra-Pure Aluminum Anodes or Magnesium Anode Kit |
Speedometer Pick-up | Integrated Into Lower Housing |
Steering System | Single Cylinder Power Steering with Anti-Feedback |
Steering Range | 56° Range Stop to Stop |
U-Joint Type | Permalube® Virtually Maintenance-Free |
Power Trim System | Twin-Cylinder Hydraulic Featuring Power Trim XD® Kick-up Return |
Typical Trim Range | 5° to 15° |
Trim Limit Switch | Standard – Adjustable |
Trailer Limit | 53° |
Trim Hinge Pin Design | Permanently Lubricated – No Maintenance Required |
Hydraulic Trim Lines | Stainless Steel Braided Armor |
Drive Coupler | Greaseable From Inside Boat |
Drive Weight | 85 lbs. (38 kg) |