Mercury – Primer Injector Service Kit | Fuel System Components | Factory Finish | 9844A1

Overview

Every boater knows that smooth, consistent starting changes the entire feel of a day on the water. When your engine fires right up—no hesitation, no frustration—you can relax and settle into the rhythm of the ride. That quiet confidence is exactly why so many boaters rely on Mercury Marine parts like the 9844A1 Primer Injector Service Kit. It’s a small component, sure, but it carries the kind of dependability you feel each time you turn the key and your outboard responds instantly.

Key Features

• Designed to restore proper priming and fuel delivery on Mercury and Mariner 6–25 horsepower outboards
• Compatible with both standard and jet drive models
• Built with durable, marine-grade materials that hold up to vibration, heat, and continuous fuel exposure
• Engineered as a direct-fit service kit for fast, straightforward installation
• Provides precise fuel enrichment during starting for smoother ignition
• Includes the essential components required for a full primer injector service

Engine & Boat Compatibility

• Fits Mercury outboards from 6 to 25 horsepower
• Fits Mariner outboards in the same horsepower range
• Works with jet drive versions of these engines
• Commonly found on small fishing boats, dinghies, tenders, skiffs, jon boats, and utility craft
• Ideal for boaters who rely on dependable cold-start performance

Performance & Practical Benefits

When your primer injector is working the way it should, everything about your outboard feels more responsive. The starts are quicker and smoother. The idle settles in evenly. Even the transition from start-up to throttle feels more stable and confident. With Mercury Marine part number 9844A1, you’ll notice that your engine behaves with more predictability, especially on cooler mornings or after long periods of sitting.

The kit fits tightly and installs cleanly with common tools, so you won’t be wrestling with awkward hardware or vague alignment. Once everything is in place, the system feels secure—no loose fittings, no dripping fuel, no second-guessing. The materials inside this kit are designed to resist swelling, breakdown, and clogging, which means fewer start-up issues and less time troubleshooting fuel delivery problems in the future.

You’ll appreciate the simplicity too. This isn’t a complicated overhaul. It’s a precise refresh that restores an essential part of your engine’s fuel system, bringing back that steady, dependable behavior you count on every time you leave the dock.

Why Buy OEM

There’s a big difference between installing a genuine Mercury Marine part and rolling the dice on a generic alternative. OEM components are built to match your engine’s exact fuel requirements, pressure tolerances, and priming characteristics. That means they fit right the first time and perform exactly the way the engine designers intended.

Replacing a primer injector with a non-OEM kit can lead to inconsistent starts, rough idle, or even long-term fuel system issues. With Mercury Marine part number 9844A1, you get a kit engineered for the real marine environment—vibration, heat, moisture, the works. It’s a small investment that saves you time, frustration, and repairs down the line.

FAQ

Q1: Which Mercury engines does the 9844A1 kit fit?

It’s designed for Mercury and Mariner 6–25 horsepower outboards, including jet drive models.

Q2: What makes this kit better than aftermarket versions?

The materials and tolerances are designed specifically for Mercury fuel systems, ensuring proper priming and reliable starting.

Q3: How do I know if it’s the right kit for my engine?

Check your owner’s manual or parts listing; if your engine calls for part number 9844A1, this is the correct match.

Q4: Can it be used in both saltwater and freshwater setups?

Yes, the components are built for the full range of marine environments.

Q5: Is installation simple?

Most boaters can install it with basic shop tools and a little patience.