Mercury New Lower Unit 3.0L

Aftermarket Lower Unit for Mercury 3.0L Engines – Fits 200, 225, and 250 HP Models (1986–2011)

This quality aftermarket lower unit is designed to fit Mercury 3.0L outboard engines, including 200 HP, 225 HP, and 250 HP models. Whether you’re running a Mercury 225 EFI, Optimax 225, or Pro XS 250, this lower unit delivers solid performance and compatibility for years 1986 through 2011.

It’s an ideal replacement for boaters looking to replace the lower unit for a Mercury 250 Pro XS, Mercury 200 EFI lower unit, or related models. Built to exact specifications for 3.0L V6 outboards, this non-OEM part offers great value without sacrificing fit.

This unit is compatible with a wide range of applications including Mercury Optimax, 225 Mercury outboard, and Mercury Pro XS lower unit setups. For boat owners looking for an easy and dependable Mercury outboard lower unit replacement, this is a cost effective option.

Use our parts finder to find other OEM Mercury Boat Parts for your Mercury Outboard.

Get the right lower unit for your outboard when you call us today using the buttons below. Take the guess work out of ordering online.

Pricing

Total Price: $1,195
Less $200 Core Rebate 
Final Price: $995

Core Rebate  Information

• Return your old core, get up to $200 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 to avoid common lower unit replacement mistakes
• To help extend the life of your gearcase, check out our Boat Maintenance Checklist