| MAKE | TYPE | MODEL | YEAR | ENGINE |
| YAMAHA | Outboard Motors | F150JA | 2013 | 150HP |
| YAMAHA | Outboard Motors | F150JA | 2014 | 150HP |
| YAMAHA | Outboard Motors | F150JA | 2015 | 150HP |
| YAMAHA | Outboard Motors | F150XB | 2016 | 150HP |
| YAMAHA | Outboard Motors | F150JB | 2017 | 150HP |
| YAMAHA | Outboard Motors | F150JB | 2018 | 150HP |
| YAMAHA | Outboard Motors | F150LA | 2013 | 150HP |
Yamaha F150 Outboard Lower Unit
Price range: 500.00$ through 870.00$
(FREE SHIPPING)
Yamaha F150 Outboard Lower Unit – OEM Replacement Gearcase
Product Overview
Ensure your boat runs at peak performance with the Yamaha F150 Outboard Lower Unit, an OEM-quality replacement engineered for durability, smooth operation, and perfect fitment. Built with Yamaha’s legendary precision and reliability, this lower unit delivers consistent power transfer and long-lasting performance in demanding marine conditions.
Designed for various Yamaha F150 models, and available in both 20″ and 25″ shaft lengths, this lower unit provides the ideal solution for restoring your outboard engine to factory standards.
Key Features
1. Heavy-Duty Construction
Crafted with marine-grade aluminum and stainless-steel components, the Yamaha F150 lower unit is built to resist corrosion, impact, and saltwater damage.
This ensures exceptional durability and reliability for both recreational and commercial use.
2. Precision-Engineered Performance
Yamaha’s advanced engineering guarantees seamless power delivery from engine to propeller, enhancing acceleration, responsiveness, and overall efficiency.
Smooth gear engagement ensures quieter operation and reduced vibration for a better boating experience.
3. Easy Installation
This lower unit is designed for direct OEM replacement, making installation fast and hassle-free. Simply unbolt your old gearcase and bolt this one in place — no modifications needed.
4. Shaft Length Options
Choose the correct shaft length for your boat setup:
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20″ Shaft (L): Ideal for smaller vessels or boats with lower transom heights.
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25″ Shaft (X): Designed for larger boats requiring extended shaft length for optimal water flow and stability.
Compatibility
The Yamaha F150 lower unit (OEM Part Number: 63P-45300-15-8D) fits the following Yamaha outboard models:
| Model | Year Range |
|---|---|
| F150TXRC | 2004–2011 |
| F150TXRD | 2005 |
| F150TXR | 2005–2011 |
| F150XB | 2012–2016 |
| F150XB | 2020 |
Note: Always verify your model number, shaft length, and year before purchase to ensure proper compatibility.
Technical Details
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Horsepower: 150 HP
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Rotation: Standard Right-Hand
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Gear Ratio: Factory Standard
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Condition: Fully serviced and ready to install
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Warranty: 1-Year Limited Warranty
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Included: New seals, bearings inspected, and gear lube applied
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Water Pump: Not included (available separately)
Why Choose the Yamaha F150 Lower Unit
✅ Genuine OEM Yamaha quality – no aftermarket compromises
✅ Built for long-term corrosion resistance and power efficiency
✅ Fully serviced and tested by marine professionals
✅ Ready for installation with minimal setup
✅ Backed by warranty and trusted Yamaha performance
Installation Note
The water pump kit is not included, allowing you to choose your preferred brand or reuse your existing one if in good condition.
For optimal performance, Yamaha recommends replacing the impeller and seals during installation and using Yamalube Marine Gearcase Oil HD.
Conclusion
The Yamaha F150 Outboard Lower Unit (63P-45300-15-8D) is the ultimate choice for restoring or upgrading your Yamaha engine’s performance. With OEM quality, precision engineering, and compatibility across multiple F150 models, this gearcase ensures you’ll enjoy smooth, efficient, and reliable operation season after season.
Whether you’re a weekend angler or a commercial operator, you can count on Yamaha’s proven engineering to keep you moving confidently on the water.
Frequently Asked Questions (FAQ)
Q1: Is this Yamaha F150 lower unit OEM or aftermarket?
This is a genuine OEM Yamaha lower unit, not an aftermarket replacement. It meets all original factory specifications.
Q2: Does this unit come with a water pump?
No, the water pump is not included. It’s recommended to install a new Yamaha OEM water pump kit during replacement.
Q3: What shaft lengths are available?
The Yamaha F150 lower unit is available in 20″ (L) and 25″ (X) shaft versions to match your outboard configuration.
Q4: How do I know if it fits my engine?
Check your outboard’s model number (e.g., F150TXRC, F150XB). If you’re unsure, contact a Yamaha dealer or mechanic to verify compatibility.
Q5: Has the unit been tested before shipping?
Yes. Each lower unit is inspected, re-sealed, and pressure-tested to guarantee proper performance and leak-free operation.
Q6: What warranty is included?
This Yamaha F150 lower unit includes a 1-year limited warranty covering defects in materials and workmanship.
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