Mercury – Fuel Injector | MerCruiser MPI Series | Precision-Matched Marine Injector | 861260T

Overview

There’s a certain satisfaction in hearing a MerCruiser engine settle into a clean, steady rhythm—the kind of smooth idle or crisp acceleration that tells you the fuel system is working exactly as it should. When you spend weekends on the water, you come to appreciate the parts that keep that feeling alive. The Mercury Marine part number 861260T Fuel Injector is one of those components. It delivers fuel with precise consistency, giving your MPI engine the balance, power, and efficiency it was designed for. Whether you’re pushing offshore or easing into a shallow cove, it’s the kind of part that helps your engine feel trustworthy every single time you fire it up.

Key Features

• Provides accurate, metered fuel delivery for optimal combustion and peak performance
• Manufactured using high-quality marine-grade materials for durability
• Same injector originally installed on MerCruiser MPI engines
• Engineered to Mercury Marine OEM specifications for exact fit and reliable operation
• Supports smoother acceleration, steadier idle, and improved fuel economy

Engine & Boat Compatibility

• Fits MerCruiser 350 Magnum MPI and MX 6.2-liter MPI sterndrive and inboard engines (1998–2001)
• Fits MerCruiser 454 Magnum, 502 Magnum, and 8.2-liter MPI engines (1999–2001)
• Compatible with a wide range of cruisers, sport boats, bowriders, performance hulls, and cabin boats
• Suitable for both recreational and heavy-use applications

Performance & Practical Benefits

You’ll notice the difference a proper fuel injector makes the moment the engine fires. With the 861260T installed, the combustion feels tighter and more controlled. The throttle responds with a smooth, confident push instead of hesitation or inconsistency. At idle, the engine settles into that quiet “just right” hum that every boater loves to hear.

Because this is an OEM injector, the spray pattern and flow rate match your MPI engine’s design perfectly. That means cleaner, more efficient burns and less wasted fuel. On the water, that translates to steadier cruising, better hole-shot performance, and more predictable handling when maneuvering around docks or loading onto the trailer.

This injector is built to handle the harsh marine environment—heat, moisture, vibration, and long hours. It resists corrosion, seats securely, and maintains consistent performance season after season. Installation is straightforward for anyone familiar with MPI systems, and once it’s in place, it feels rock-solid and dependable.

Why Buy OEM

When you’re dealing with fuel delivery, accuracy matters. That’s why seasoned boaters stick with Mercury Marine OEM components. The 861260T isn’t just a good fit—it’s the exact injector your engine was engineered around. Aftermarket versions may promise similar performance, but variations in flow rate, spray pattern, or internal build can lead to inefficiency or engine imbalance. With OEM, you get reliability, proper calibration, and long-term protection for your MerCruiser. It’s a practical choice that keeps your engine running the way Mercury intended.

FAQ

Q1: Which engines does the Mercury 861260T Fuel Injector fit?

It fits MerCruiser 350 Magnum MPI, MX 6.2L MPI, 454 Magnum, 502 Magnum, and 8.2L MPI engines from the listed model years.

Q2: What makes this injector better than aftermarket replacements?

It matches Mercury’s exact OEM specifications for spray pattern, flow rate, and durability, ensuring cleaner combustion and better performance.

Q3: How do I know if this is the correct replacement?

Check your parts list or owner’s manual for part number 861260T. If it matches, it’s the correct injector.

Q4: Can this injector be used in both saltwater and freshwater engines?

Yes, it’s built to withstand corrosion and perform reliably in either environment.

Q5: Is installation straightforward?

For owners familiar with MPI systems, installation is clean and manageable. Professional installation is recommended for best results.