YAMAHA 6E5-W0090-45-EK Outboard Powerhead V4 115-130

( Manufacturer Part Number: 6E5-W0090-45-EK ), ( Stroke: 2-stroke ), ( Engine Hp : 115-130 )

Review YAMAHA V4 Stroke Outboard Powerhead Assembly

The **Yamaha 6E5-W0090-45-EK V4 115 130 HP Outboard Powerhead** is a high-performance, fuel-injected marine engine designed to deliver unmatched reliability, efficiency, and power for medium-sized boats ranging from fishing vessels to luxury cruisers. Part of Yamaha s renowned **V4 series**, this powerhead combines cutting-edge technology with robust engineering to provide a seamless blend of performance and durability. The **45-degree V4 cylinder configuration** ensures a smooth, balanced operation with reduced vibration, while the **electronic fuel injection system** optimizes fuel delivery for improved throttle response, fuel economy, and reduced emissions. With a **displacement of 5.6 liters (343 cubic inches)**, this powerhead generates between **115 and 130 horsepower**, depending on the model variant, making it ideal for applications requiring both power and precision.

One of the standout features of this outboard is its **Yamaha s proprietary V4 engine architecture**, which enhances torque delivery and overall efficiency while minimizing wear on critical components. The **cast aluminum cylinder head and block** provide superior heat dissipation, ensuring consistent performance even under demanding conditions, while the **forged crankshaft and connecting rods** contribute to exceptional durability and longevity. The **electronic ignition system** further enhances reliability by delivering precise spark timing, reducing misfires, and improving cold-start performance. Additionally, the **integrated exhaust system** is designed for optimal flow, reducing backpressure and maximizing power output.

For ease of maintenance and operation, the **6E5-W0090-45-EK** is equipped with Yamaha s **user-friendly control interface**, which includes a **digital display** for real-time monitoring of critical engine parameters such as RPM, water temperature, and oil pressure. The **self-diagnostic system** provides clear error codes, making troubleshooting straightforward for both professional mechanics and boat owners. The **low-profile design** of the powerhead allows for easy installation on a variety of hull types, while the **corrosion-resistant coatings** ensure resistance to saltwater and harsh marine environments, extending the engine s service life.

Whether used in a **fishing boat, a performance cruiser, or a recreational vessel**, this outboard powerhead delivers a perfect balance of power, efficiency, and reliability. Its **compact yet robust construction** makes it a versatile choice for boat owners seeking a high-performance engine without sacrificing ease of use or maintenance. With Yamaha s reputation for innovation and quality, the **6E5-W0090-45-EK V4** stands as a dependable workhorse, ready to propel your vessel with confidence and precision for years to come.

### **Pros and Cons of buying a Yamaha 6E5-W0090-45-EK V4 (115 130 HP) Outboard Powerhead**

#### **Pros**

1. **Reliability and Durability** Yamaha is known for building long-lasting outboards with robust construction. The V4 engine series is particularly well-regarded for its dependability, especially in saltwater and freshwater applications.

2. **Fuel Efficiency** Compared to older models or competitors, this engine offers improved fuel economy, reducing operating costs over time. The V4 series is optimized for better torque and efficiency without sacrificing power.

3. **Low Maintenance Requirements** Yamaha s outboards are designed with user-friendly maintenance in mind. The V4 model features an easy-access service area, simplified oil changes, and fewer moving parts prone to wear compared to older designs.

4. **Performance and Power** The 115 130 HP range provides strong acceleration and cruising speed, making it suitable for mid-sized boats (e.g., 18 22 feet). The V4 s four-stroke design ensures smoother operation and less vibration than two-strokes.

5. **Environmental Friendliness** As a four-stroke engine, it meets modern emissions standards and produces less pollution than older two-stroke outboards, which is beneficial for both marine and air quality regulations.

6. **Resale Value** Yamaha outboards hold their value well in the used market, making this a smart long-term investment if you plan to upgrade later.

7. **Compatibility with Modern Boats** The V4 series is designed to work seamlessly with contemporary boat electronics, including GPS, fish finders, and trim systems, enhancing overall usability.

8. **Warranty Coverage** Yamaha offers a standard warranty (typically 2 years for parts and labor), and extended warranties are available, providing peace of mind against unexpected repairs.

9. **Versatility** Suitable for both freshwater and saltwater use, though saltwater operation may require more frequent maintenance (e.g., corrosion protection).

10. **Aftermarket Support** A wide range of aftermarket parts, upgrades (e.g., exhaust systems, performance chips), and service providers are available, making customization and repairs easier.

---

#### **Cons**

1. **Higher Upfront Cost** Compared to older Yamaha models or some competitors (e.g., Mercury or Suzuki), the V4 series is more expensive to purchase new or used in top condition. This may be a barrier for budget-conscious buyers.

2. **Weight** Outboards of this size are heavy (typically 200 250 lbs), which can make installation and handling more difficult, especially for smaller boats or DIY enthusiasts without proper lifting equipment.

3. **Fuel and Oil Consumption** While more efficient than older models, four-stroke outboards still consume more fuel and oil than some high-performance two-strokes (though they are cleaner and more reliable).

4. **Limited High-Speed Performance** The 115 130 HP range is best suited for cruising and moderate speeds. For high-performance racing or extreme speed, larger or more powerful outboards (e.g., 200 HP) would be more appropriate.

5. **Maintenance Costs Over Time** While maintenance is simplified, parts (e.g., impellers, seals, fuel injectors) can be expensive if they fail prematurely. Regular servicing is required to prevent costly repairs.

6. **Noise and Vibration** Some users report that four-stroke outboards can be louder and slightly more vibration-prone than high-end two-strokes, though this is subjective and depends on the boat s setup.

7. **Installation Complexity** Proper installation (e.g., alignment, trim angle, exhaust routing) is critical for performance and longevity. Poor installation can lead to premature wear or reduced efficiency.

8. **Saltwater Corrosion Risk** Even with Yamaha s corrosion-resistant coatings, saltwater use accelerates wear on components like the lower unit and impeller. More frequent maintenance is needed in saltwater environments.

9. **Limited Availability of Used Models** Since the V4 series is relatively new, there may be fewer used options compared to older Yamaha models, potentially driving up prices in the pre-owned market.

10. **Learning Curve for Some Features** The V4 s advanced electronics (e.g., digital dashboards, trim controls) may require some time to master, which could be a drawback for boaters who prefer simplicity.

---

### **Conclusion**

The **Yamaha 6E5-W0090-45-EK V4 (115 130 HP)** is a well-engineered, reliable, and efficient outboard powerhead that excels in durability, low maintenance, and environmental friendliness. It is an excellent choice for boaters who prioritize longevity, fuel efficiency, and ease of use, particularly for mid-sized cruising boats. However, its higher cost, weight, and specialized maintenance needs may not suit everyone, especially those on a tight budget or seeking high-performance racing capabilities.

For most recreational boaters whether fishing, cruising, or light towing the V4 series offers a strong balance of performance and practicality. If you value Yamaha s reputation for quality and are willing to invest in a high-quality powerhead, this engine is a **strong recommendation**. However, if you need a more budget-friendly option or require extreme high-speed performance, alternatives like older Yamaha models, Mercury Verado, or Suzuki DF100/DF150 may be worth considering.

- You prioritize reliability, fuel efficiency, and low maintenance.

- Your boat is mid-sized (18 22 feet) and used for cruising, fishing, or light towing.

- You are willing to invest in a premium outboard with long-term value.

- You plan to use it in freshwater or saltwater with proper maintenance.

- You are on a tight budget and can find a well-maintained alternative at a lower cost.

- You need extreme high-speed performance or plan to race frequently.

- You lack experience with outboard installation or maintenance.

Details:

Hi I am selling this 1988 Yamaha v4 115-130.

part #: 6e5w009045 prices

• $199.99-$300.00

specifications ouboaen:

• for makes: Yamaha
• mpn: 6e5-w0090-45-ek
• stroke: 2-stroke
• engine hp : 115-130

shipping ouboaen:

• service: Flat Rate Freight
• cost: $299.00
• type: Fixed
• class: Freight

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Complete Outboard Powerheads

offer ouboaen:

• availability: In Stock
• started: February 25, 2026
• best offers: True
• sold: 0
• options: Ship-to-home
• quantity: 1

payments ouboaen:

• other
• credit card: Visa
• wallet: Apple-pay

seller ouboaen:

• # reviews: 3350
• city: Stuart, Florida
• rating: 99.1%

returns ouboaen:

• policy: No Returns

Yamaha 6E5-W0090-45 Is Similar To:

• 0000 Yamaha 20hp 2 Stroke Short (37.6% similar) I used it mostly on lake Isabel a fresh water. Short shaft...(February 20th, 2017)
• 0000001 Yamaha Oem Outboard Digital (38.1% similar) Display photos show actual product buyer will get...(April 20th, 2017)
• 000001 Yamaha Dual Outboard Engine (34.6% similar) Was told that one of the neutral switches replaced inside, wiring harness extension is included need to be connected back because taken apart when rigging removed from boat. Some small parts and screws might be missed. Sometimes I just was unable to test it or some parts screws might be missed. ...(September 16th, 2017)
• 0x66 Yamaha Hp Outboard Motor (38.4% similar) Replaced gear lube but likely needs seal kit or new lower end. Compression on all cylinders. It is a standard left rotation and has just over 1100 hrs. This is a 1999 yamaha 225 hp OX66 saltwater series 2 stoke with lower end had some water in gear lube...(February 3rd, 2019)
• 10319 Stiletto Stainless Prop Mercury Yamaha Outboard Propeller (30.1% similar) Condition: used but in good condition and guaranteed to function properly. Part: 10319 stiletto stainless prop x 19P v6 mercury yamaha outboard propeller fits various mariner motor parts. Please see included pictures...(August 24th, 2018)
• 10321 Stiletto Prop Mercury Mariner Yamaha Outboard Propeller (30.5% similar) May fit more engines. Condition: used but in good condition and guaranteed to function properly. Please see included pictures. Part: 10321 stiletto prop x 21P v6 mercury mariner yamaha outboard propeller fits various motor parts. This propeller will also fit yamaha outboard motors with the correct ...(January 7th, 2019)
• 152041 Oem Yamaha Outboard Premier Ii Cable New In Box (35.5% similar) They are yamaha premier cabled 15 foot length I have 2 available this offer is for 1 thanks good luck. I got these for a boat was working on and needed up not using them, think paid over 50 each...(July 1st, 2018)
• 16715m Mercury Mariner Yamaha Outboard Linkage Rod Connector Joint (29.4% similar) Item mercury joint, part number 16715M. New old stock from dealer close out...(December 27th, 2018)
• 173362 Yamaha Outboard Boat Motor (36.9% similar) Yamaha outboard motor concealed side mount - control box item is a take off and like new...(March 27th, 2017)
• 18-2374 Sierra Marine Yamaha Outboard Magnetic Drain Screw Replaces (27.7% similar) Sierra marine yamaha outboard magnetic drain screw replaces 00USES gasket not included m8 thread...(January 22nd, 2019)
• 18-3066 Sierra Marine Mercury Mariner Yamaha Impeller Outboard 030999315182 (27.6% similar) Sierra marine mercury mariner YAMAHAOUTBOARDIMPELLER18-3066 mfr: part order UPC: 82 condition: new : mercury yamaha impeller. Mercury mariner outboards:replaces: 47-11590MYAMAHA 6G1 00FITS: 6/8 hp...(October 28th, 2018)