Mercruiser ALPHA 1 GEN 2 #51100007P

MerCruiser Alpha One Gen 2 Sterndrive – 2.0 Ratio | OEM #5121600TP / 5110007P

Upgrade your boat’s performance and reliability with the MerCruiser Alpha One Gen 2 Outdrive, OEM part numbers 5121600TP / 5110007P, featuring a 2.0 gear ratio. This brand-new, genuine Quicksilver OEM outdrive is built to match factory specifications for MerCruiser Alpha I Gen II sterndrives and is ideal for a wide range of applications from recreational boating to professional marine service.

Quicksilver, the OEM supplier for Mercury Marine since 1950, manufactures this unit to deliver the precision, durability, and performance serious boaters expect. It is not aftermarket—you’re getting the same part trusted by Mercury factory installations.

This unit fits all Alpha Gen 2 sterndrive systems (1991 and up) and includes both upper and lower units pre-assembled and ready for installation. Built from marine-grade components and engineered for superior hydrodynamics and strength, it’s perfect for long-term use in both freshwater and saltwater environments.

Features & Benefits:

• 🔧 OEM Precision: Factory-built Quicksilver product, not aftermarket
• ⚙️ Complete Sterndrive: Includes both upper and lower units fully assembled
• 💪 High Strength Construction: Corrosion-resistant for fresh and saltwater
• 🔄 Exact-Fit Design: Direct replacement for Alpha Gen II drives
• 🛠️ Plug-and-Play Install: No modifications or adaptors needed
• 💰 Eligible for Core Rebate: Return your old unit for up to $400 back
• ✅ 3-Year Fault-Free Warranty: Industry-leading protection and peace of mind

Pricing

Total Price: $2,795
Less $400 Core Rebate
Final Price: $2,395

Product Finish:

• High-durability marine-grade finish
• Factory pre-lubricated
• Corrosion-resistant coating

Core Rebate Information

• Return your old core, get up to $400 back
• Rebate amount will vary based on the condition of your core
• ♻️ Recycle your core- keep boat parts out of the landfill

Useful Resources

• 🔍 How to find your Boat Engine serial number
• Still deciding? Watch our YouTube video How avoid common lower unit replacement mistakes
• To help extend the life of your gearcase, check out our Boat Maintenance Checklist