1. Boat Outboard Engines To Buy
  2. sku: 22839778825072722
  3. YAMAHA 6CB-45300-04-NA

YAMAHA 6CB-45300-04-NA Lower Unit Up 200/225/250 4-STROKE

fits model: 200, 250. make: Yamaha. year: 2009.

6cb-45300-04-na Yamaha Local Pickup Lower Unit Assy 2009 And Up 200/225/250 Sho 4-stroke

( Manufacturer Part Number: 6CB-45300-04-NA ), ( Part Type: Unit ), ( Stroke: 4-stroke ), ( Engine Hp : Vf200-225-250 ), ( Country Of Origin: United States )

Review YAMAHA Local Pickup Lower Unit Assy And Up 200/225/250 Sho 4-stroke fits 200 250 2009

The **Yamaha 6CB-45300-04-NA Lower Unit** is a high-performance, precision-engineered transmission designed exclusively for Yamaha outboard motors produced between 2009 and 2013, covering the 200, 225, and 250 horsepower four-stroke models. This lower unit represents the pinnacle of Yamaha s engineering expertise, combining durability, efficiency, and reliability to deliver seamless power transfer from the engine to the propeller. Built with a robust **aluminum housing** and reinforced internal components, it is engineered to withstand the demands of high-performance boating, including heavy loads, aggressive acceleration, and prolonged use in varying water conditions. The **gear-driven design** ensures smooth and consistent power delivery, minimizing vibration and maximizing efficiency, while the **sealed and lubricated internal bearings** reduce friction and extend the unit s operational lifespan.

One of the standout features of this lower unit is its **universal compatibility** with Yamaha s 200-250 HP four-stroke outboards, making it an ideal replacement for those seeking to restore or upgrade their vessel s performance. The **NA (Non-Adjustable) designation** indicates a fixed gear ratio, optimized for the specific power output of these engines, ensuring optimal torque and speed without the need for manual adjustments. The **high-strength steel shafts** and **precision-machined gears** are designed to handle the intense forces generated by high-horsepower engines, reducing wear and preventing premature failure. Additionally, the lower unit incorporates **Yamaha s proprietary sealing technology**, which effectively prevents water ingress while maintaining optimal lubrication, further enhancing its longevity and reliability in marine environments.

For boaters who demand both performance and durability, the **6CB-45300-04-NA Lower Unit** is an essential component that ensures smooth operation, reduced maintenance, and long-term dependability. Whether used in fishing vessels, speedboats, or luxury yachts, this lower unit delivers the power and precision required to navigate with confidence, even under the most demanding conditions. With its robust construction, efficient design, and seamless integration with Yamaha s high-performance engines, it stands as a testament to the brand s commitment to innovation and quality in marine propulsion.

### **Pros and Cons of buying a Yamaha 6CB-45300-04-NA Lower Unit (2009 UP 200/225/250 4-Stroke)**

#### **Pros**

1. **Compatibility and Fitment**

The 6CB-45300-04-NA is a direct replacement for the stock lower unit in Yamaha 200/225/250 4-stroke outboards from 2009 and up. This means no modifications are required, and it integrates seamlessly with the engine and drive shaft.

2. **Improved Durability and Strength**

This lower unit is built with reinforced materials, including a stronger gear case and shaft housing, which can enhance longevity compared to the stock unit, especially in demanding conditions like heavy fishing, towing, or rough water use.

3. **Better Sealing and Water Resistance**

The updated design likely includes improved seals and gaskets, reducing the risk of water ingress, which can extend the life of internal components like bearings and gears.

4. **Compatibility with Aftermarket Upgrades**

Since this lower unit is designed for newer models, it may be more compatible with aftermarket upgrades such as larger propellers, shaft extensions, or performance modifications without clearance issues.

5. **Reliability for High-Performance Use**

If you plan to use the outboard for activities like wakeboarding, skiing, or heavy fishing, this lower unit can handle higher loads and stress better than the stock unit, reducing the risk of failure.

6. **Easier Maintenance Access**

Some aftermarket lower units offer improved access to internal components, making servicing and repairs more straightforward than the stock unit, which can be more difficult to disassemble.

7. **Warranty Coverage**

Yamaha often provides warranty coverage for aftermarket lower units, offering peace of mind in case of defects or premature wear.

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#### **Cons**

1. **Cost**

The 6CB-45300-04-NA is an aftermarket part, and while it may be priced competitively, it can still be more expensive than a used or refurbished stock lower unit. The cost may not be justified if the stock unit is still in good condition.

2. **Installation Complexity**

While the unit is designed for easy fitment, improper installation can lead to issues such as misalignment, improper sealing, or damage to the drive shaft. If you re not experienced with outboard repairs, professional installation may be required, adding to the cost.

3. **Potential for Overkill**

If you primarily use the boat for light recreational purposes (e.g., leisure cruising, calm lakes), the stock lower unit may suffice, and upgrading may not provide noticeable benefits. The improved durability may not be necessary for low-stress applications.

4. **Limited Availability and Lead Times**

Aftermarket parts can sometimes have longer lead times or limited availability compared to stock Yamaha parts. This could delay repairs or upgrades if you need the part urgently.

5. **Compatibility with Older Models**

While this lower unit fits 2009 and up models, it is not backward-compatible with older outboards. If you re considering this unit for an older boat, you may need to verify exact fitment or explore alternative options.

6. **Potential for Voiding Warranty**

Some boat manufacturers or dealers may void the warranty on the outboard if aftermarket lower units are installed without their approval. Always check with Yamaha or your dealer before proceeding.

7. **Weight and Balance Considerations**

A reinforced lower unit may be slightly heavier than the stock unit. In some cases, this could affect the boat s balance or handling, particularly on smaller or lightweight vessels.

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### **Conclusion**

The Yamaha 6CB-45300-04-NA lower unit is a solid upgrade for owners of 200/225/250 4-stroke outboards from 2009 and up who prioritize durability, performance, and reliability. It is particularly well-suited for users who engage in high-stress activities like fishing, towing, or wakeboarding, where the stock unit might be prone to wear or failure. However, for casual boaters or those on a tight budget, the benefits may not outweigh the cost, especially if the stock unit is still functional.

If you decide to upgrade, ensure proper installation and verify warranty implications. If you re unsure about the condition of your current lower unit, a thorough inspection by a Yamaha-certified technician may help determine whether an upgrade is necessary.

### **Recommendation**

**Buy the 6CB-45300-04-NA if:**

- You frequently use your outboard for demanding activities (fishing, towing, wakeboarding).

- Your stock lower unit shows signs of wear, such as leaks, unusual noise, or difficulty in shifting.

- You want to future-proof your outboard against premature failure and extend its lifespan.

- You re comfortable with the installation process or have access to a professional mechanic.

**Avoid the upgrade if:**

- You use the boat primarily for light recreational purposes with minimal stress on the outboard.

- Your stock lower unit is in good condition and has no visible issues.

- You re concerned about the additional cost without clear performance benefits.

- Your boat s warranty could be voided by the installation.

Ultimately, weigh the pros and cons against your specific boating needs and budget. If in doubt, consult a Yamaha specialist to assess whether the upgrade is justified for your situation.

Details:

Came from 2020 skeeter boat that got damaged and sold for parts around 360 hours. Shaft measures 20 inch from plastic to the end.

part #: 6cb4530004 prices

  • $4000.00-$4687.97

specifications ouboaen:

  • for models: 200, 250
  • for makes: Yamaha
  • for years: 2009
  • mpn: 6cb-45300-04-na
  • part type: Unit
  • stroke: 4-stroke
  • engine hp : Vf200-225-250
  • country of origin: United States

payments ouboaen:

  • wallet: Google-pay
  • other
  • credit card: Discover

seller ouboaen:

  • city: Richmond, Texas
  • # reviews: 137
  • rating: 100.0%

offer ouboaen:

  • sold: 0
  • availability: In Stock
  • quantity: 1
  • started: March 23, 2026
  • options: Seller-arranged-local-pickup

general ouboaen:

  • Boat Parts > Outboard Engines Components > Complete Outboard Lower Units
  • condition: Used

returns ouboaen:

  • time: 14 Days
  • policy: Returns Accepted
  • paid by: Buyer

shipping ouboaen:

for models: 200, 250, for makes: yamaha, for years: 2009, part type: unit, stroke: 4-stroke, engine hp: vf200-225-250, country of origin: united states,
category: boat parts > outboard engines components > complete outboard lower units, sku: 22839778825072722,
Yamaha 6CB-45300-04 Is Similar To:
ouboaen logo
3 offers $4000.00–$4687.97 USD
  • New. Offer #1 priced at $4687.97 + $150.00 shipping estimate = $4837.97* total. Fits: 2009 & Up VF200-VF225-VF250. NEW OEM Yamaha Lower Unit Assy Long Shaft (20in).+$150.00 shipping
  • New other (see details). Offer #2 priced at $4633.00 + $309.80 shipping estimate = $4942.80* total. Boat part number 1119053 is a new 25" XL shaft, outboard motor lower unit from Yamaha, part number -NA.+$309.80 shipping
  • Remanufactured. Offer #3 priced at $4000.00 + $150.00 shipping estimate = $4150.00* total. Reman Yamaha Lower Unit Assy Long Shaft.+$150.00 shipping

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