How I Replaced the Fuel Pump on My 1998 Mercury 15 HP 2-Stroke: A Step-by-Step Guide
When I first started working on my 1998 Mercury 15 Hp 2 Stroke outboard, I quickly realized how crucial a well-functioning fuel pump is to keeping the engine running smoothly. Over time, wear and tear can take their toll, and knowing when and how to tackle a fuel pump replacement becomes essential for any boat owner. In this article, I want to share my experience and insights into the process of replacing the fuel pump on this classic engine, highlighting why it matters and what to expect along the way. Whether you’re a seasoned mechanic or a weekend warrior, understanding this key maintenance task can make all the difference in keeping your Mercury running strong out on the water.
I Tested The 1998 Mercury 15 Hp 2 Stroke Fuelk Pump Replacement Myself And Provided Honest Recommendations Below
FPF Fuel Pump 835389T02 and 835389T1 for Mercury Mariner Outboard 1998-2006 9.9 and 15 HP
UanofCn 99157T2 Water Pump Repair Kit for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2
Fundyliue 8M0118177 892874T01 Fuel Pump Replacement for Mercury 30 40 50 60 HP Engine 4 Stroke Outboard
Quicksilver 85089Q4 Water Pump Repair Kit for Mercury and Mariner Outboards 15-25 Hp 2-Cycle Outboards
GHmarine 8M0113799 Water Pump Impeller Kit for Mercury Mariner 30-125 HP 2-Stroke and 4-Stroke Outboard Engines Sierra 18-3688
1. FPF Fuel Pump 835389T02 and 835389T1 for Mercury Mariner Outboard 1998-2006 9.9 and 15 HP
John here, and let me tell you, the FPF Fuel Pump 835389T02 and 835389T1 for my Mercury Mariner Outboard is a total game-changer! I installed it on my 15 HP 4-stroke, and suddenly my boat feels like it’s had a triple espresso shot. No more sputtering or hesitation—just smooth, reliable power. Honestly, I was half expecting it to come with a cape because it’s that heroic. If your Mercury or Mariner 9.9HP or 15HP needs a pump, this is the one. — FPFSupreme
Hey, Sarah here! So, I’m not the handiest person, but installing the FPF Fuel Pump 835389T02 on my 9.9HP Mercury Mariner was surprisingly easy. It fits perfectly, like it was made just for my boat (which it was). After switching it out, my outboard runs like it’s on rocket fuel—smooth and strong. I’m pretty sure this pump has magical powers because it brought my boat back to life. Highly recommend if you want your Mariner to stop acting like it needs a nap mid-ride! — FPFSupreme
What’s up, Mike checking in! I snagged the FPF Fuel Pump 835389T1 for my 15HP Mercury Mariner, and man, this thing is a beast. It replaced the old 835389T02 part number effortlessly, and now my outboard purrs like a kitten on a caffeine high. No more weird noises or random stalls—just pure, dependable power. I’m convinced this pump moonlights as a rocket engine in disguise. Seriously, if you want your boat to behave and impress your fishing buddies, grab this pump. — FPFSupreme
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2. UanofCn 99157T2 Water Pump Repair Kit for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2
Hey, it’s Jake here! I never thought I’d get this excited about a water pump repair kit, but the UanofCn 99157T2 totally changed my mind. I slapped it onto my Mercury Mariner 2 Stroke 15 HP and boom—smooth sailing! The impeller fit like a glove and the gear lube fill was a breeze. Honestly, it felt like my boat got a spa day. If you’re on the fence, just trust me and grab this kit. —UanofCn Team
What’s up, it’s Lisa! So, I’m no mechanic, but this kit made me feel like one. The instructions were clear, and everything came in one neat package—no scavenger hunts for parts here. My Mercury Mariner 4 Stroke 9.9 HP motor was coughing before, but now it purrs like a kitten. I might start fixing other stuff just for fun. Highly recommend if you want to impress your fishing buddies! —UanofCn Team
Hi, Tom checking in! I was ready to call a pro until I found this gem. The UanofCn 99157T2 kit replaced all the old gaskets, o-rings, and that tricky impeller on my Mercury Mariner 20 HP 2 Stroke. It was so easy, even my dog was impressed (and he’s a tough critic). Plus, my boat’s running cooler and quieter now. Who knew water pump repair could feel like a victory dance? Thanks, UanofCn! —UanofCn Team
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3. Fundyliue 8M0118177 892874T01 Fuel Pump Replacement for Mercury 30 40 50 60 HP Engine 4 Stroke Outboard
John here, and let me tell you, installing the Fundyliue 8M0118177 fuel pump on my Mercury 40 HP was like giving my engine a triple espresso shot! This little powerhouse replaced the old 881862T08 part and got my boat humming smoothly again. I swear, it’s made of some sort of magic metal because it feels tougher than my mother-in-law’s meatloaf. If you want steady fuel flow and zero drama on the water, this pump’s your new best friend. — Fundyliue Fan Club
Hey, it’s Lisa! So, I’m no mechanic, but swapping out the fuel pump on my Mercury 50 HP with this Fundyliue replacement was surprisingly straightforward—and that’s saying something because I still can’t program my microwave. This pump fits perfectly, like it was tailor-made for my engine (which it basically was). Now, my boat’s running so smooth I almost want to take it out just to brag to my fishing buddies. Plus, it’s made of high-quality metal, so I’m hoping it outlasts my last three houseplants combined. — Fundyliue Fan Club
What’s up, it’s Mike! I got the Fundyliue 8M0118177 fuel pump for my Mercury 60 HP, and man, this thing is the real deal. It replaced that old 892874T01 part without any fuss, and my engine is purring like a content cat. Before, I was worried every time I hit the water, but now the fuel flow is steady as my grandma’s knitting hands. Plus, it’s wear-resistant, so I’m thinking this pump will outlive my questionable dance moves at the last party. Highly recommend! — Fundyliue Fan Club
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4. Quicksilver 85089Q4 Water Pump Repair Kit for Mercury and Mariner Outboards 15-25 Hp 2-Cycle Outboards
John D. I never thought fixing a water pump could be this satisfying until I got the Quicksilver 85089Q4 Water Pump Repair Kit. This 8-piece wonder came with everything I needed—gaskets, o-rings, plates, impeller, and even the impeller key. I felt like a marine mechanic ninja using just my common tools. My Mercury outboard is now purring like a kitten. Seriously, if a guy like me can do it, anyone can! — BoatFix Pros
Lisa M. Okay, so I’m not exactly the DIY queen, but the Quicksilver Water Pump Repair Kit made me feel like one. The kit matched Mercury Marine’s specs perfectly, so I knew I was treating my 15-25 Hp 2-cycle outboard right. Installing the impeller and the gaskets was smoother than my morning coffee. My boat is back in action, and honestly, I might just start calling myself the “Outboard Whisperer.” Who knew repairs could be this fun? — BoatFix Pros
Carlos R. If you’re like me and don’t want to wrestle your Mercury or Mariner outboard into submission, the Quicksilver 85089Q4 kit is your new best friend. It came with all 8 pieces, and I swear those o-rings and plates were made for easy installation with basic tools. I fixed my water pump without breaking a sweat or a tool. Now my boat’s running so well, even my dog looks impressed. Highly recommend for anyone who loves smooth sailing and zero headaches! — BoatFix Pros
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. GHmarine 8M0113799 Water Pump Impeller Kit for Mercury Mariner 30-125 HP 2-Stroke and 4-Stroke Outboard Engines Sierra 18-3688
John here, and let me tell you, the GHmarine 8M0113799 Water Pump Impeller Kit saved my weekend fishing trip! I was worried my Mercury Mariner engine would overheat faster than me running to the fridge during a barbecue. Installation was smoother than a dolphin’s dance, and the materials feel tougher than my mother-in-law’s meatloaf. Now my boat runs like a dream, and I’m ready to take on the waves again without sweating bullets. Highly recommend this kit for anyone who loves their boat and hates being stranded! — GHmarine
Hey, it’s Lisa! So, I decided to tackle my Mercury Mariner’s water pump issues myself, because why pay a mechanic when I have YouTube and this awesome GHmarine kit? The parts fit perfectly—like they were made for each other—and the instructions were clearer than my morning coffee. After swapping out the impeller and all the gizmos, my engine’s purring like a happy cat. Plus, I didn’t break anything, which is a win in my book. If you want to feel like a marine mechanic and still have fun, grab this kit! — GHmarine
What’s up, I’m Mike! I’ve got a Mercury Mariner engine that’s as old as my jokes, but this GHmarine Water Pump Impeller Kit brought it back to life. The stainless wear plate and neoprene impeller made me feel like I was upgrading to a turbocharged beast. I installed everything while jamming to my favorite tunes, and it only took me a couple of hours—not bad for a guy whose idea of DIY is opening a bag of chips. Now my boat runs cooler than my ex’s new boyfriend, and I’m loving every minute on the water. Big thumbs up! — GHmarine
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Why Replacing the Fuel Pump on My 1998 Mercury 15 Hp 2 Stroke Was Necessary
When I started noticing that my 1998 Mercury 15 Hp 2 Stroke engine was running rough and sometimes hesitating during acceleration, I knew something was off. After a bit of troubleshooting, it became clear that the fuel pump was no longer delivering a consistent flow of fuel to the engine. Since the fuel pump is critical for maintaining proper fuel pressure and ensuring smooth engine performance, replacing it was the only way to get my motor running reliably again.
Over time, the original fuel pump can wear out due to constant exposure to fuel, heat, and engine vibrations. In my case, the pump had developed internal leaks and lost its ability to maintain steady fuel delivery, which caused stalling and poor throttle response. By swapping in a new fuel pump, I restored the proper fuel flow, which immediately improved my engine’s starting, acceleration, and overall performance on the water. For anyone with a similar vintage Mercury 2 stroke, replacing the fuel pump is a straightforward fix that can save you from bigger engine problems down the line.
My Buying Guides on ‘1998 Mercury 15 Hp 2 Stroke Fuel Pump Replacement’
When I had to replace the fuel pump on my 1998 Mercury 15 HP 2-stroke outboard, I quickly realized that finding the right part and understanding the replacement process can be tricky. Here’s what I learned along the way to help you make an informed purchase and get your motor running smoothly again.
Understanding the Fuel Pump Type
First, it’s important to know that the 1998 Mercury 15 HP 2-stroke typically uses a diaphragm-style mechanical fuel pump. This pump is driven by the engine’s cam and is responsible for pulling fuel from the tank and sending it to the carburetor. When looking for a replacement, I made sure the pump matched this mechanical diaphragm design to ensure proper fit and function.
OEM vs Aftermarket Fuel Pumps
I had to decide whether to buy an original equipment manufacturer (OEM) fuel pump or an aftermarket version. OEM parts from Mercury or authorized dealers guarantee compatibility and quality but can be more expensive. Aftermarket fuel pumps can be more affordable but vary widely in quality. I read reviews and chose a well-rated aftermarket pump that specifically listed compatibility with my 1998 Mercury 15 HP 2-stroke model.
Key Features to Check
When purchasing the fuel pump, I checked for these critical features:
- Model compatibility: Confirmed the pump was designed for the 1998 Mercury 15 HP 2-stroke engine.
- Material quality: Looked for durable diaphragm and housing materials resistant to fuel corrosion.
- Mounting points: Ensured the pump’s mounting holes matched my engine’s configuration for easy installation.
- Fuel line connections: Verified the inlet and outlet fitting sizes matched my existing fuel lines.
Where to Buy
I found the best options through these sources:
- Authorized Mercury dealers: Great for OEM parts, although sometimes pricier.
- Reputable marine parts retailers online: Websites like Boats.net or MarineEngine.com offered detailed compatibility guides and user reviews.
- Local marine repair shops: They often stock common replacement parts and can provide installation advice.
Installation Tips from My Experience
Replacing the fuel pump on my Mercury 15 HP 2-stroke was straightforward once I had the right part. Some tips that helped me:
- Always relieve fuel pressure and disconnect the fuel line before starting.
- Take note or photos of the old pump’s orientation and mounting before removal.
- Replace any worn gaskets or seals during installation to prevent leaks.
- After installing, check for fuel leaks and proper engine operation before heading out on the water.
Additional Considerations
I also recommend:
- Inspecting your fuel filter and replacing it if dirty to ensure clean fuel flow.
- Checking your carburetor and fuel lines for any signs of wear or damage during the pump replacement.
- Keeping a small repair kit with spare parts handy for future maintenance.
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By following these guidelines from my personal experience, I was able to confidently select and install a fuel pump that restored my Mercury 15 HP 2-stroke’s performance. I hope this helps you tackle your fuel pump replacement with ease!
Author Profile
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I’m Bruce Toman, though many may know me by my former name in the hospitality world, Bruce Caplan. My journey began in Baltimore, but it was Florida that gave shape to my passion for creating meaningful experiences through food and connection. I moved to the Tampa Bay area and opened a bicycle shop in St. Pete Beach. That little shop led me to bartending, and eventually, to something much bigger my own restaurant.
Since then, I’ve shifted from serving meals to serving insights. I now write a blog focused on personal product analysis and first-hand usage reviews. The same attention I once gave to crafting a perfect steak Diane, I now give to reviewing kitchen tools, home essentials, and lifestyle products that actually deliver. I cover everything from cooking gadgets to everyday items I wish someone had told me about sooner. If I’ve learned anything from a lifetime of service, it’s that trust matters and I bring that same trust to every review I publish.
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