MERCURY 879886T Elhpt Fuel Pump Gas Injector Set 40HP

( Manufacturer Part Number: 879886T ), ( Type: Fuel Injector ), ( Country Of Origin: United States )

Review MERCURY 40hp Elhpt Fuel Gas Injector Set Pump fits 2005

The **Mercury 879886T 2005 40HP EHPT Fuel Gas Injector Set Pump** is a high-performance marine propulsion component meticulously engineered to enhance the efficiency and reliability of outboard engines in fuel-gas applications. Designed specifically for the 2005 model year of Mercury s 40 horsepower EHPT (Electronic High-Performance Technology) outboard motors, this injector set pump assembly plays a critical role in optimizing fuel delivery, ensuring precise combustion, and maximizing power output while maintaining compliance with emissions standards. Crafted from durable materials, including high-grade aluminum and corrosion-resistant alloys, this component is built to withstand the demanding conditions of marine environments, from saltwater corrosion to the thermal stresses of continuous operation. The fuel gas injector set incorporates advanced hydraulic and mechanical precision, featuring a robust pump mechanism that delivers a consistent and calibrated flow of fuel-gas mixture to the engine s combustion chamber. This not only improves throttle response and acceleration but also reduces fuel waste and minimizes harmful emissions, aligning with modern marine regulations. The design integrates seamlessly with the engine s electronic control module (ECM), allowing for real-time adjustments to fuel delivery based on load, RPM, and environmental factors, thereby enhancing both performance and fuel efficiency. Whether used in recreational boats, small commercial vessels, or fishing applications, this injector set pump ensures a smoother, more responsive ride while extending the lifespan of the engine through optimized fuel management. For marine enthusiasts and professionals seeking a reliable upgrade or replacement part, this component represents a blend of cutting-edge technology and rugged durability, designed to keep the engine running at peak performance for years to come.

The **Mercury 879886T 2005 40HP EHPT Fuel Gas Injector Set Pump** is a specialized component designed for marine engines running on dual-fuel (diesel/gas) systems. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Compatibility with Dual-Fuel Systems**

The pump is specifically engineered for engines that operate on both diesel and gaseous fuels (e.g., LPG, CNG, or natural gas). This makes it ideal for vessels that require flexibility in fuel sources, reducing dependency on diesel alone.

2. **Improved Fuel Efficiency**

Gasoline or gaseous fuels often provide better fuel efficiency compared to diesel, especially in marine applications where fuel costs can be significant. The injector set ensures proper fuel delivery, optimizing combustion and reducing waste.

3. **Reduced Emissions**

Gaseous fuels generally produce lower emissions of particulate matter, carbon monoxide, and sulfur oxides compared to diesel. This aligns with stricter environmental regulations and can help vessels meet emissions standards more easily.

4. **Extended Engine Life**

Running on gas can reduce carbon buildup and thermal stress on engine components, potentially prolonging the life of the engine if maintained correctly. The injector set ensures clean and precise fuel delivery, further supporting engine longevity.

5. **Cost Savings on Fuel**

Gaseous fuels (especially natural gas) are often cheaper than diesel, depending on regional fuel prices. Over time, switching to gas can lead to substantial cost savings, particularly for commercial or frequently used vessels.

6. **Reliability for Marine Use**

Mercury is a well-known brand in marine propulsion, and this component is designed for durability in marine environments. The EHPT (Electronic High-Pressure Turbo) system enhances performance and reliability under varying loads.

7. **Ease of Conversion**

For vessels already running on diesel, converting to a dual-fuel system with this injector set can be a straightforward upgrade. It integrates with existing engine systems with minimal modifications, making it a practical choice for retrofitting.

8. **Support for High-Performance Engines**

The 40HP rating indicates it is suitable for mid-sized engines, offering a balance between power and efficiency. This makes it versatile for a range of applications, from small commercial boats to recreational vessels.

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### **Cons**

1. **High Initial Cost**

The upfront cost of purchasing and installing a dual-fuel injector set pump can be significantly higher than a standard diesel fuel system. This may be a barrier for budget-conscious buyers, especially for smaller vessels.

2. **Complex Installation and Maintenance**

Dual-fuel systems require specialized knowledge for installation and maintenance. Improper setup can lead to performance issues, fuel inefficiency, or even engine damage. Owners may need to invest in professional installation and regular servicing.

3. **Fuel Storage and Safety Considerations**

Gaseous fuels (especially LPG or CNG) require proper storage tanks and ventilation systems to prevent leaks or explosions. Marine environments introduce additional risks, such as exposure to water or fluctuating temperatures, which must be managed carefully.

4. **Limited Availability of Service Providers**

Not all marine mechanics or dealerships may have experience with dual-fuel systems. Finding qualified technicians for repairs or adjustments could be challenging, particularly in remote areas.

5. **Potential for Performance Trade-offs**

While gaseous fuels can improve efficiency, some engines may experience slight power reductions compared to diesel, depending on the fuel type and engine tuning. The 40HP rating suggests it is optimized for efficiency rather than raw power, which may not suit high-performance applications.

6. **Regulatory and Certification Requirements**

Operating a dual-fuel vessel may require additional certifications or compliance checks, depending on local maritime laws. This could involve extra paperwork, inspections, or modifications to meet safety and emissions standards.

7. **Compatibility Issues with Older Engines**

While this injector set is designed for a 2005 model, older engines may not be fully compatible without additional modifications. Retrofitting could require upgrading other components, increasing costs and complexity.

8. **Dependence on Fuel Supply Infrastructure**

Gaseous fuels are not universally available, especially in remote or international waters. Vessels relying on gas may face limitations when docking at ports without gas refueling stations, requiring backup diesel systems.

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### **Conclusion**

The **Mercury 879886T 2005 40HP EHPT Fuel Gas Injector Set Pump** is a valuable investment for owners seeking to transition to dual-fuel systems, offering significant benefits in fuel efficiency, emissions reduction, and cost savings. However, the higher upfront cost, installation complexity, and safety considerations make it a more suitable choice for those with the technical expertise, budget, and infrastructure to support a dual-fuel setup.

For **recreational boat owners** with limited experience in marine mechanics or those operating in areas with unreliable gas fuel access, the added complexity may not be justified. Conversely, **commercial operators, frequent travelers, or environmentally conscious owners** who prioritize long-term savings and emissions compliance will likely find the injector set highly beneficial.

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### **Recommendation**

- You are converting an existing diesel engine to dual-fuel for cost savings and efficiency.

- Your vessel operates in regions where gaseous fuels are readily available and cost-effective.

- You have access to qualified technicians for installation and maintenance.

- You prioritize environmental sustainability and emissions reduction.

- Your budget can accommodate the higher initial cost and potential maintenance expenses.

- You lack the technical knowledge or resources to install and maintain a dual-fuel system.

- Your primary fuel source remains diesel due to limited gas infrastructure.

- You operate in areas with strict fuel regulations that may complicate dual-fuel compliance.

- Your engine is older or requires extensive modifications to integrate the injector set.

- You are on a tight budget and cannot justify the upfront investment without clear long-term benefits.

For those undecided, consider renting or leasing a dual-fuel system for a trial period to assess performance and cost savings before committing to a purchase. Additionally, consult with a marine engineer to evaluate your specific engine and operational needs.

Details:

2005 Mercury 40HP ELHPT Fuel Gas Injector Set 879886T, This fuel injector is in good condition and shows normal signs of wear. Removed From: Yamaha with Unknown miles, Please review all pictures to assess the condition of item. R Cycle Parts.

part #: 879886t prices

• $112.09-$330.00

specifications carfuelinjector:

• for makes: Mercury
• for years: 2005
• mpn: 879886t
• type: Fuel Injector
• country of origin: United States

payments carfuelinjector:

• wallet: Apple-pay
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general carfuelinjector:

• condition: Used
• Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

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• policy: Returns Accepted
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offer carfuelinjector:

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

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seller carfuelinjector:

• city: Kalispell, Montana
• # reviews: 20538
• rating: 99.7%

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