Mercury – Fuel Pump | 2-Stroke DFI, Pro XS, Jet & SST Outboards | High Pressure | 855427A1

Overview

There’s nothing quite like the sound of a Mercury two-stroke firing up — that sharp, confident growl that says your boat’s ready to move. The Quicksilver 855427A1 Fuel Pump keeps that energy alive, delivering consistent, high-pressure fuel flow to your engine every time you turn the key. Designed for Mercury and Mariner 110-225HP 2-stroke outboards, this pump ensures smooth power delivery across the throttle range, whether you’re running wide open or idling back toward the dock.

It’s built for those who demand reliability — the kind of boaters who understand that dependable fuel flow is the difference between a great day on the water and one cut short. With Quicksilver, you’re not just replacing a part — you’re restoring that peace of mind that comes from knowing your outboard will respond the way it should.

Key Features

• Genuine Mercury Marine high-pressure fuel pump
• Fits Mercury and Mariner 110-225HP 2-Stroke DFI, Pro XS, Jet, XS, and SST outboards, including 200HP DFI/M2 JetDrive and SportJet models
• Provides consistent fuel delivery under all operating conditions
• Engineered for maximum pressure stability and flow efficiency
• Designed and tested for marine-grade corrosion resistance
• Simple installation using common shop tools
• Meets Mercury OEM specifications for reliability and fit

Engine & Boat Compatibility

• Fits Mercury and Mariner 110-225HP 2-Stroke DFI, Pro XS, Jet, XS, and SST engines
• Compatible with 200HP DFI/M2 JetDrive and SportJet systems
• Ideal for high-performance, jet-drive, and offshore fishing boats
• Works across a range of bass boats, performance skiffs, and sport rigs
• Suitable for freshwater and saltwater use

Performance & Practical Benefits

A dependable fuel pump is the heart of your outboard’s performance. The Mercury 855427A1 ensures a steady, high-pressure flow to your engine’s injectors, keeping combustion clean, power consistent, and throttle response crisp. You’ll feel the difference — smoother acceleration, quicker starts, and steady RPMs even when the water gets rough.

Quicksilver’s engineering focuses on reliability under load. This pump maintains constant fuel pressure through high demand, helping prevent lean running conditions that can damage your engine. It’s built to withstand the heat, vibration, and moisture that define real-world boating. Every start feels confident; every throttle push feels smooth and strong.

Installing it is straightforward, with fittings and mounts designed to align perfectly with factory connections. Once in place, you can trust it to deliver clean, uninterrupted performance season after season. That’s the kind of assurance only genuine Mercury-tested components can offer.

Why Buy OEM

Choosing an OEM Mercury Marine fuel pump means choosing parts that were engineered for your engine from the start. The 855427A1 meets exact factory standards for pressure, flow rate, and durability. Aftermarket alternatives may look similar, but often fall short when it comes to materials, sealing, or precision — and when it comes to fuel delivery, “close enough” simply isn’t good enough.

With OEM, you’re getting guaranteed compatibility, long-term reliability, and performance you can feel. It’s an investment in your boat’s health and your own peace of mind. When you push the throttle and feel that clean surge of power, you’ll know it was worth doing the job right.

FAQ

Q1: Which Mercury engines or systems does the Fuel Pump fit?

It fits Mercury and Mariner 110-225HP 2-Stroke DFI, Pro XS, Jet, XS, and SST outboards, including 200HP DFI/M2 JetDrive and SportJet models.

Q2: What makes this part different from aftermarket alternatives?

Quicksilver’s OEM construction ensures precise pressure control, corrosion protection, and long-term reliability that generic replacements can’t match.

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

Check your owner’s manual or verify the part number 855427A1 to confirm compatibility with your engine’s fuel system.

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

Yes. It’s designed with marine-grade materials and coatings to handle either environment confidently.

Q5: Is installation straightforward for most boat owners?

Absolutely. It installs cleanly with standard tools and factory mounting points — no modifications required