Yamaha F300 F250 F225 Lower Unit
6CE-45300-10-8D
6CE-45300-A1-8D
6CE-45300-A2-8D
6CE-45300-A3-8D
Also 6HB-45300-10-8D from 2018′ for Model code 6JA1
Also suitable for some SHO models, please check with us for confirmation
Yamaha Lower unit F300 / F250 / F225
From 2010′ to 2018′ & up
Standard Rotation
XXL-shaft gearbox.
Fully reconditioned, serviced (bearings, oil, seals, impeller, pressure tested) and ready for action.
Global Shipping Made Easy
| Region | Delivery Time | Special Notes |
|---|---|---|
| USA/Canada | 1-3 days | No customs |
| Europe | 2-4 days | CE certified |
| Australia | 3-5 days | AMSA approved |
1,870.00$
(FREE SHIPPING)
Yamaha F300 F250 F225 Lower Unit Assembly (Used) – 6CE-45300-10-8D
Unlock Superior Marine Power and Reliability
Keep your Yamaha outboard performing at its peak with the Yamaha F300 F250 F225 Lower Unit Assembly (6CE-45300-10-8D). This genuine Yamaha replacement part ensures smooth operation, maximum thrust, and long-lasting durability — ideal for professional fishermen, boat owners, and marine service providers who demand uncompromising quality.
⚙️ Key Features
1. Heavy-Duty Construction
Built from marine-grade, corrosion-resistant materials, this Yamaha lower unit withstands even the harshest saltwater conditions. Its robust design ensures long service life and consistent performance season after season.
2. Optimized Gear Ratio
Enjoy efficient power transfer and smoother acceleration with the Yamaha-engineered gear ratio. Whether you’re cruising offshore or towing skiers, this lower unit delivers seamless torque and speed control.
3. Ultra-Smooth Operation
Experience quieter rides with reduced vibration. The precision engineering of this assembly guarantees smooth shifting and stable propeller engagement, enhancing comfort during long boating sessions.
4. Direct Fit Compatibility
This lower unit assembly fits perfectly with Yamaha F300, F250, and F225 outboard engines, ensuring plug-and-play installation with no modifications required.
✅ OEM Part Number: 6CE-45300-10-8D
5. Easy Installation
The Yamaha F300/F250/F225 lower unit comes pre-lubricated and ready for installation, making it ideal for DIY boat owners and professional marine technicians alike.
6. Enhanced Performance
Upgrading your lower unit can restore lost speed, improve fuel efficiency, and optimize propeller thrust — giving your boat the edge it deserves on the water.
🌊 Benefits
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Fuel Efficiency Boost: Engineered for optimal drag reduction and efficient power output.
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Peace of Mind: Genuine Yamaha quality means proven reliability and fewer maintenance headaches.
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Low Maintenance Design: Designed for easy servicing and extended component life.
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Versatile Use: Perfect for fishing, leisure cruising, or commercial marine applications.
📋 Specifications
| Specification | Details |
|---|---|
| Model Compatibility | Yamaha F300 / F250 / F225 |
| Part Number | 6CE-45300-10-8D |
| Material | Corrosion-resistant marine alloy |
| Gear Ratio | Optimized for Yamaha performance |
| Condition | Used – Professionally inspected & tested |
| Fitment | OEM Direct Fit |
🧭 Why Choose This Yamaha Lower Unit?
Choosing the Yamaha F300 F250 F225 Lower Unit (6CE-45300-10-8D) means investing in OEM performance and long-term dependability. Unlike aftermarket alternatives, this genuine Yamaha component maintains factory specifications for torque, gear ratio, and propeller engagement — keeping your outboard running like new.
💡 Pro Tip: Pair this lower unit with our Yamaha Outboard Service Kits for complete maintenance coverage and extended engine life.
✅ Frequently Asked Questions (FAQ)
Q1: Is this lower unit compatible with all Yamaha F300, F250, and F225 models?
Yes, this unit fits most Yamaha F300, F250, and F225 four-stroke models that use part number 6CE-45300-10-8D. Always verify compatibility using your engine serial number.
Q2: Is this lower unit new or used?
This is a used OEM Yamaha lower unit, professionally inspected and tested to ensure peak performance and reliability.
Q3: Do I need any additional parts for installation?
In most cases, no. However, replacing the water pump impeller and seals during installation is recommended for best results.
Q4: Can I install this lower unit myself?
Yes — if you have basic mechanical skills and marine tools. Otherwise, a certified Yamaha technician can perform the installation quickly.
Q5: What’s the warranty on this product?
All used lower units from OutboardMarineUSA.com come with a limited functionality warranty, covering defects in materials or workmanship.
⚓ Upgrade Your Outboard with Yamaha Quality
Don’t settle for aftermarket alternatives. Invest in a genuine Yamaha lower unit assembly and restore your outboard’s original performance.
👉 Order now from OutboardMarineUSA.com and get your boat back on the water — running stronger, smoother, and faster.








