
840412T Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $23.74 | Top Pick! Condition is Used, 2005 MERCURY 240 M2 SPORT JET INJECTION SYSTEM FUEL INJECTOR RAIL 840412T OEM , shipping cost = $18.85 | 99.8% |
![]() | $299.00 | Condition is Used, 2004 MERCURY 240 SPORT JET FUEL RAIL ASSEMBLY 840412T LOT TD4, shipping cost = $12.99 | 99.9% |
![]() | $314.99 | Condition is Used, Sea Doo Mercury 240 EFI M2 OEM Fuel Rail Injection Injectors 840412T 840481-1, shipping cost = $9.85 | 100.0% |
![]() | $600.00 | Condition is Used, Mercury Air Handler Plate With Injectors 240 JET 1 YEAR WARRANTY, FREE SHIPPING | 99.9% |

The Mercury 840412T 2005 240 m2 Sport Jet Injection Fuel Injector Rail is an essential component of the fuel delivery system in Mercury outboard engines from the 2005 model year. This injector rail, specifically designed for 240 m2 (square inches) of fuel injector coverage, is a crucial part that helps ensure optimal engine performance and fuel efficiency.
This Mercury fuel injector rail is meticulously engineered using high-quality materials to provide superior durability and reliability. The rail is designed to house and control the fuel injectors, directing fuel to the appropriate engine cylinder at the precise moment required for efficient combustion. With its 240 m2 coverage, this rail is suitable for larger Mercury outboard engines, delivering the right amount of fuel to the injectors for optimal power and performance.
The Mercury 840412T 2005 240 m2 Sport Jet Injection Fuel Injector Rail is equipped with advanced features for improved fuel atomization and combustion. The Sport Jet technology ensures that fuel is injected as a fine mist, creating a larger surface area for better mixing with air and faster ignition. This results in more efficient combustion, reducing fuel consumption and lowering harmful emissions.
This fuel injector rail is also designed with ease of installation in mind. It is engineered to fit seamlessly into the engine's fuel system, requiring minimal modification to existing components. The rail includes all necessary mounting hardware and detailed instructions to make the installation process as straightforward as possible.
In summary, the Mercury 840412T 2005 240 m2 Sport Jet Injection Fuel Injector Rail is an essential component for Mercury outboard engines from the 2005 model year. Its advanced design and features ensure optimal engine performance, improved fuel efficiency, and easier installation. By investing in this high-quality fuel injector rail, you can help ensure that your Mercury outboard engine runs at its best, delivering the power and reliability you expect.
Mercury 840412T 2005 240 m2 Sport Jet Injection Fuel Injector Rail: A Detailed Analysis
The Mercury 840412T 2005 240 m2 Sport Jet Injection Fuel Injector Rail is a crucial component in the functioning of Mercury outboard engines. This injector rail is designed to deliver fuel evenly and efficiently to the engine's combustion chamber. In this analysis, we will discuss its pros and cons to help you make an informed decision about whether to purchase it.
Pros:1. Enhanced Fuel Efficiency: The Mercury 840412T 240 m2 Sport Jet Injection Fuel Injector Rail is designed to improve fuel efficiency by delivering fuel evenly and in precise quantities to the engine.
2. Improved Engine Performance: This injector rail can lead to improved engine performance, as the engine receives the optimal fuel mixture for better combustion and power output.
3. Durability: Mercury is known for manufacturing high-quality marine parts, and the 840412T injector rail is no exception. It is designed to withstand the harsh marine environment, ensuring long-lasting performance.
4. Fuel Savings: By improving fuel efficiency, this injector rail can help boat owners save money on fuel costs over time.
5. OEM Part: This injector rail is an Original Equipment Manufacturer (OEM) part, meaning it is specifically designed and manufactured by Mercury for use in their engines.
Cons:1. Cost: The Mercury 840412T 240 m2 Sport Jet Injection Fuel Injector Rail can be quite expensive compared to aftermarket alternatives.
2. Complex Installation: Installing the injector rail can be a complex process, requiring specialized tools and expertise. It is recommended that the installation is performed by a certified Mercury mechanic or marine technician.
3. Availability: Depending on the location and the availability of Mercury dealers, it may be challenging to acquire this injector rail promptly.
Conclusion:The Mercury 840412T 2005 240 m2 Sport Jet Injection Fuel Injector Rail is an investment in improved engine performance, fuel efficiency, and long-term savings. While it comes with a higher price tag and a complex installation process, the benefits it offers make it a worthwhile investment for those who value engine performance and fuel savings.
Recommendation:If you own a Mercury outboard engine and are looking for improved performance and fuel efficiency, the Mercury 840412T 240 m2 Sport Jet Injection Fuel Injector Rail is an excellent choice. However, it is recommended that you consult with a certified Mercury mechanic or marine technician to ensure a proper installation and optimal performance.
Details:
Mercury sport jet drive 240hp 240 efi power head 0e406400 up air handler and fuel rail components. This is in used condition and shows signs of typical ordinary use/weathering/wear/removal to be expected on a part. Mercury sport jet drive 240hp 240 efi M2 power head 0e406400 up - USA cat.# 90-885191 air handler and fuel rail components. Mercury sport jet drive 240hp 240 efi pump 0e406400 up air handler and fuel rail components.
Mercury sport jet drive 240hp 240 efi M2 pump 0e406400 up air handler and fuel rail components.
specifications inboardfuel:
- for models: M2
- for years: 2005
- brand: Mercury
- mpn: 840412t
- part type: Jet Fuel Injector
- modified item: No
- country of origin: United States
seller inboardfuel:
- # reviews: 26393
- rating: 99.6%
- city: ortonville, michigan
general inboardfuel:
- category: Boat Parts > Inboard Engines Components > Intake Fuel Systems
payments inboardfuel:
- credit card: mastercard
- other
- wallet: paypal
offer inboardfuel:
- sold #: 13
- availability: in stock
- in stock #: 4
- prices: $299.00–$600.00
- item condition: Used
- options: ship-to-home
- started: october 16, 2025
shipping inboardfuel:
- carrier: usps
- type: calculated
- service: usps priority mail
- transit: 4-7 days
- class: expedited
returns inboardfuel:
- policy: no returns
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