YAMAHA 90891-40722-00 Oil Injection Pump

( Part Type: Oil Pump ), ( UPC: 908914072200 )

Review YAMAHA New Oil Injection Pump Assy

The **Yamaha 90891-40722-00 Oil Injection Pump** is a precision-engineered component designed specifically for Yamaha marine outboard engines, ensuring optimal fuel delivery and performance in demanding aquatic environments. This high-quality pump is part of Yamaha s advanced fuel injection system, meticulously crafted to maintain consistent pressure and flow, which is critical for smooth engine operation, reduced emissions, and extended engine life. Constructed from durable materials, including corrosion-resistant alloys and reinforced elastomers, this pump is built to withstand the harsh conditions of saltwater exposure, prolonged exposure to UV radiation, and the mechanical stresses of continuous operation. Its robust design incorporates a sealed internal mechanism, minimizing the risk of leaks and contamination, which is essential for preserving fuel efficiency and preventing costly engine damage. The oil injection pump operates by precisely metering fuel into the combustion chamber, working in tandem with the engine s electronic control module to optimize power output while adhering to strict emissions standards. Whether installed in a high-performance racing outboard or a reliable workboat, this pump delivers reliable performance, ensuring consistent throttle response and fuel economy across a wide range of operating conditions. For marine enthusiasts and professionals who demand reliability, efficiency, and longevity from their equipment, the Yamaha 90891-40722-00 Oil Injection Pump represents a critical investment in maintaining peak engine performance and durability.

The Yamaha **90891-40722-00** oil injection pump is a critical component for Yamaha outboard motors, particularly those with **OXYVVA** (Oil Injection) technology, such as the **Yamaha 90HP, 115HP, and 150HP** models. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Yamaha 90891-40722-00 Oil Injection Pump**

1. **OEM Quality and Reliability**

The pump is manufactured by Yamaha, ensuring high-quality materials and precise engineering. OEM parts are designed to meet the exact specifications of the engine, reducing the risk of compatibility issues or premature failure.

2. **Compatibility with OXYVVA Engines**

This pump is specifically designed for Yamaha s **OXYVVA** system, which injects oil into the combustion chamber to reduce emissions and improve fuel efficiency. Using an OEM pump ensures proper function of this system, preventing potential engine damage or performance degradation.

3. **Longevity and Durability**

Yamaha s components are built to last, often exceeding the lifespan of aftermarket alternatives. The pump is designed to withstand the stresses of marine environments, including saltwater corrosion and vibration, when properly maintained.

4. **Warranty Coverage**

Purchasing directly from Yamaha or an authorized dealer typically includes a warranty, providing peace of mind against defects. Aftermarket parts may not offer the same level of protection.

5. **Performance Consistency**

An OEM pump ensures consistent oil injection, which is crucial for maintaining optimal engine performance, fuel economy, and emissions compliance. Aftermarket pumps may not replicate this precision, leading to uneven operation or reduced efficiency.

6. **Ease of Installation**

Since it is an OEM part, it is designed to fit seamlessly into the engine s existing system. This reduces the complexity of installation compared to aftermarket parts that may require modifications or additional adapters.

7. **Support and Technical Resources**

Yamaha provides extensive technical documentation, diagnostic tools, and customer support for OEM parts. This can be invaluable for troubleshooting or ensuring proper installation.

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### **Cons of buying a Yamaha 90891-40722-00 Oil Injection Pump**

1. **Higher Cost**

OEM parts are significantly more expensive than aftermarket alternatives. The price of the Yamaha oil injection pump can be 2 to 3 times higher than comparable aftermarket options, which may be a barrier for budget-conscious buyers.

2. **Limited Availability**

Depending on the region, OEM parts may not be readily available at local marine supply stores. Buyers may need to order directly from Yamaha or an authorized dealer, which could involve longer lead times or shipping costs.

3. **Potential for Overkill**

If the pump fails due to a minor issue (e.g., a worn seal or a minor manufacturing defect), replacing it with an OEM part may be seen as excessive when a less expensive aftermarket part could suffice. However, this is a risk with any high-cost component.

4. **No Customization Options**

Unlike aftermarket parts, the OEM pump does not offer customization or upgrades. Buyers who seek performance enhancements or modifications may be limited in their options.

5. **Resale Value Impact**

While OEM parts contribute to long-term reliability, they do not directly impact the resale value of the boat or engine. The primary benefit of using OEM parts is performance and longevity, not depreciation.

6. **Potential for Overstock or Counterfeit Parts**

When purchasing from third-party sellers (e.g., eBay, Amazon, or uncertified dealers), there is a risk of receiving counterfeit or refurbished parts that may not meet OEM standards. Always verify the seller s authenticity.

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### **Conclusion**

The Yamaha **90891-40722-00** oil injection pump is a high-quality, reliable component that is essential for maintaining the performance and longevity of Yamaha OXYVVA engines. Its advantages in terms of compatibility, durability, and warranty coverage make it the best choice for serious boaters who prioritize engine health and efficiency. However, the higher cost and potential availability issues may deter budget-conscious or casual users.

For most owners of Yamaha outboards, the investment in an OEM pump is justified by the reduced risk of engine damage, improved fuel economy, and long-term reliability. Aftermarket parts can be a cost-effective alternative for those on a tight budget, but they may not offer the same level of performance or longevity, especially in demanding marine environments.

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### **Recommendation**

- You own a Yamaha OXYVVA engine and need a replacement for reliability and performance.

- You prioritize warranty coverage and OEM support.

- You are willing to pay the premium for a part that is guaranteed to fit and function correctly.

- You want to avoid the risks associated with aftermarket parts, such as compatibility issues or premature failure.

- You are on a tight budget and can find a reputable aftermarket pump with good reviews and warranties.

- You are replacing a minor component (e.g., seals or gaskets) alongside the pump and want to minimize costs.

- You are not running the engine under extreme conditions and can accept a slightly higher risk of long-term reliability issues.

**Final Verdict:** For the average Yamaha outboard owner, the **90891-40722-00 oil injection pump is the best choice** due to its reliability, compatibility, and support. However, if cost is a major concern, thoroughly research aftermarket options from trusted brands (e.g., **Seafoam, Genuine Marine, or reputable third-party suppliers**) and ensure they meet Yamaha s specifications. Always prioritize quality over price when it comes to critical engine components.

Details:

This Oil Injection Pump Assembly is a genuine Yamaha product, ensuring compatibility and quality construction. With the manufacturer part number 90891-40722- it is easy to identify and install, providing a reliable solution for maintaining performance of your boats engine. The New Yamaha Oil Injection Pump Assay 90891-40722-00 is a replacement part designed specifically for outboard engines.

part #: 908914072200 prices

• $61.00-$261.96

specifications ouboaen:

• for makes: Yamaha
• part type: Oil Pump
• upc: 908914072200

returns ouboaen:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer ouboaen:

• availability: In Stock
• sold: 0
• started: March 5, 2026
• quantity: 1
• options: Ship-to-home

general ouboaen:

• Boat Parts > Outboard Engines Components > Other
• condition: New

seller ouboaen:

• rating: 100.0%
• # reviews: 38
• city: Gautier, Mississippi

payments ouboaen:

• credit card: Discover
• other
• wallet: Paypal

shipping ouboaen:

• cost: $10.24
• service: UPS Ground
• carrier: UPS
• transit: 4-7 Days
• class: Standard
• type: Calculated

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