Mercury – Quicksilver Complete Sterndrive | Alpha Gen II | Standard Rotation (RH) | 2.00 Gear Ratio | 51100007P

Overview

Built for boaters who want reliability and performance from a proven design, the Quicksilver 51100007P Complete MerCruiser Alpha Gen II Sterndrive is a direct replacement drive engineered to fit the legendary MerCruiser Alpha propulsion system. Designed for single installation 3.0L Alpha sterndrive engines up to 150 horsepower, it’s ideal for runabouts and pontoon boats. With its Tri-Paint corrosion-resistant coating, XK360 low-copper alloy, and spiral-cut steel bevel gears, this drive delivers quiet operation, smooth handling, and long-lasting strength in all conditions.

Key Features

• Purpose: Complete replacement sterndrive for MerCruiser Alpha Gen II systems.
• Rotation: Standard (Right-Hand) rotation for single-drive applications.
• Gear Ratio: 2.00:1, optimized for 3.0L engines up to 150HP.
• Material: Built with XK360 low-copper aluminum alloy for superior corrosion resistance.
• Finish: Tri-Paint system provides a durable, multilayer corrosion-resistant barrier.
• Gears: Precision spiral-cut steel bevel gears for smooth and quiet performance.
• Durability: Designed for longevity in both freshwater and saltwater environments.

Engine & Boat Compatibility

• MerCruiser 3.0L Alpha sterndrive engines (up to 150HP)
• Single-drive installations only
• Runabouts and pontoon boats
  

Performance & Real-World Benefits

The 51100007P Alpha Gen II sterndrive delivers the same dependable performance that made the MerCruiser Alpha name a favorite among boaters. The precision-cut gears reduce noise and vibration, while the rugged housing and corrosion-resistant finish protect against wear and saltwater exposure.

This drive is designed to bolt on as a direct replacement, making installation straightforward. It runs quietly, shifts smoothly, and maintains strong propulsion efficiency for years of worry-free use — whether you’re cruising across the lake or towing a skier.

Why Choose Mercury OEM

The Quicksilver 51100007P is built by Mercury to the same standards as factory MerCruiser drives. Aftermarket sterndrives can look similar but often use lower-grade alloys or imprecise gear machining, leading to poor alignment, noise, and premature wear.

Mercury’s OEM drives use premium materials, precision engineering, and advanced coatings to ensure unmatched reliability. With factory-level testing and proven performance, you know you’re getting a drive built to go the distance.

FAQ

Q1: What engines does this sterndrive fit?
It fits MerCruiser 3.0L Alpha sterndrive engines up to 150 horsepower.

Q2: What gear ratio does it have?
The drive uses a 2.00:1 gear ratio, perfect for 3.0L engines in single installations.

Q3: What’s the rotation direction?
This is a right-hand (standard rotation) drive.

Q4: Can I use it in saltwater?
Yes — the Tri-Paint finish and low-copper alloy protect against corrosion in both salt and freshwater.

Q5: Why OEM instead of aftermarket?
Mercury OEM drives guarantee the right gear alignment, materials, and fit — ensuring smooth, quiet, and reliable operation.