Alpha One Sterndrive

The Most Popular Sterndrive in the World. Single or twin applications up to 65 mph for gas engines up to 300 hp

The Alpha® sterndrive earned the title of “world’s most popular sterndrive” because it delivers reliable performance in a value package. Reliable performance means more family fun year after year without missing a beat. Alpha drives slice through the water with an efficient hydrodynamic profile producing very little drag. And because of the Alpha drive’s many maintenance-free features – you’ll enjoy a worry-free ownership experience.

RELIABILITY

• Spiral-cut steel bevel gears for quiet operation and durability
• XK 360 low copper alloy for corrosion resistance
• Tri-Paint System (Irridite, EDP & Powder Paint) creates a tough, durable corrosion resistant barrier
• Armored trim lines protect hydraulic system from debris
• Flow-Torq II Propeller Hub The Weekend Saver protects the entire drive from damage, not just the lower unit

PERFORMANCE

• Hydrodynamic lower unit produces little drag to slice through the water efficiently
• Trim limit switch sets drive angle for maximum performance every time
• Through-Prop exhaust maximizes power and reduces noise levels
• Wide range of 3-, 4-, and 5-blade propellers available in aluminum and stainless steel to maximize pulling power and top speed for any application

EASY OWNERSHIP

• Drive Lube Monitor Alarm warns if drive lube is low. Engine mounting allows easy inspection and fill without the cost to pull a boat from the water.
• Permalube® U-Joint Virtually no maintenance required
• Maintenance Free Hinge Pins No added cost to pull a boat from the water
• Greaseable Drive Coupler No added cost to pull a boat from the water
• Greaseable Gimbal Bearing Do not need to remove the drive for service

TECHNOLOGY

• Power Trim XD® Automatically Returns the Drive to the Water to Maintain Full Control of Boat in Case of an Emergency
• MerCathode® kit monitors the galvanic potential of the drive and counteracts corrosion with a metered electrical charge providing continuous cathodic protection
• Engine Guardian System® with MPI engines protects the drive from damage from low lubricant levels

SPECIFICATIONS

• 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)