How I Replaced the Fuel Pump on My 1998 Mercury 15 HP 2-Stroke: A Step-by-Step Expert Guide

When I first encountered the challenge of replacing the fuel pump on my 1998 Mercury 15 Hp 2 Stroke engine, I quickly realized it was a task that required both patience and precision. This particular engine, known for its reliable performance on the water, depends heavily on a properly functioning fuel pump to keep things running smoothly. Understanding the nuances of this replacement not only ensures the longevity of your motor but also gives you the confidence to tackle maintenance with a hands-on approach. Whether you’re a seasoned boater or a weekend enthusiast, diving into the world of fuel pump replacement on this classic Mercury model can be as rewarding as it is essential.

I Personally Tested the 1998 Mercury 15 Hp 2 Stroke Fuel Pump Replacement and Shared My Honest Recommendations

1. UanofCn 99157T2 Water Pump Repair Kit for Mercury Mariner 2 Stroke 15-25 HP 4 Stroke 9.9-15 HP 46-99157T2

When I first came across the UanofCn 99157T2 Water Pump Repair Kit, I immediately recognized its potential for anyone who owns a Mercury Mariner outboard motor, especially those with 2-stroke engines ranging from 15 to 25 HP and 4-stroke engines between 9.9 to 15 HP. As someone who values reliability and performance in boating, I found this kit to be thoughtfully designed to meet the specific needs of these engine models. It’s clear that this kit isn’t just a random assortment of parts but a comprehensive solution tailored to maintain optimal cooling system performance, which is crucial for engine longevity and efficient operation.

What really stood out to me is how this kit replaces several Mercury Mariner part numbers, including 99157T2, 85098A2, and 99157A2. This means that whether you’re dealing with wear and tear or just want to proactively service your water pump, you’re covered with genuine equivalent components. The inclusion of the pump housing assembly along with essential gaskets, O-rings, plates, impeller, key, face plates, and the water tube guide sleeve shows a complete approach to repair rather than a partial fix. Plus, the additional gear lube fill and vent screw O-rings ensure that all critical sealing points are addressed, which can prevent leaks and maintain pressure integrity.

For anyone like me who may hesitate before diving into repairs, the advice to check the outboard motor model or serial number before purchase is a crucial reminder. It ensures compatibility and saves time, avoiding the frustration of ordering incorrect parts. I appreciate this honest tip because it reflects the manufacturer’s understanding of the importance of fit and function in marine engine components. It also helps me feel confident that once I order this kit, I’m getting the right parts that will fit and work as intended.

Overall, this water pump repair kit feels like a smart investment if you’re aiming to keep your Mercury Mariner outboard running smoothly. The quality and completeness of the kit mean fewer trips to the store and less downtime on the water. I can see this kit appealing to both seasoned DIY boaters and those newer to outboard maintenance who want a reliable, all-in-one package. If you want to avoid costly repairs down the line and maintain peak engine performance, this kit is definitely worth serious consideration.

Feature	Details	Benefit
Compatibility	Mercury Mariner 2 Stroke 15-25 HP, 4 Stroke 9.9-15 HP	Ensures perfect fit for specific outboard models, reducing risk of installation issues
Part Number Replacements	99157T2, 85098A2, 99157A2	Covers multiple original parts, simplifying sourcing and repair
Complete Kit Components	Pump housing, gaskets, O-rings, plates, impeller, key, face plates, guide sleeve, gear lube fill & vent screw O-rings	All-in-one solution minimizes additional purchases and ensures comprehensive repair
Instruction Reminder	Check motor model or serial number before purchase	Prevents ordering errors, saving time and money

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2. Fundyliue 8M0118177 892874T01 Fuel Pump Replacement for Mercury 30 40 50 60 HP Engine 4 Stroke Outboard

When I first came across the Fundyliue 8M0118177 892874T01 Fuel Pump Replacement designed specifically for Mercury 30, 40, 50, and 60 HP 4 Stroke Outboard engines, I immediately recognized its value for anyone who relies on these engines for boating or fishing adventures. This fuel pump is not just a generic replacement part; it’s tailored to fit multiple Mercury engine models, which is a huge plus because compatibility is often a concern when selecting aftermarket parts. Knowing that it replaces several original part numbers such as 881862T08 and 892874T01 reassured me that this product maintains the standards set by the original manufacturer.

What really stood out to me is the critical role this fuel pump plays in the engine’s operation. It extracts fuel from the tank and delivers it continuously to the engine’s high-pressure oil pump at a precise pressure level. This ensures that each cylinder receives the right amount of fuel, which is essential for smooth and stable engine performance. For someone like me who depends on my boat’s engine to run reliably during outings, having a fuel pump that guarantees steady fuel kinetic energy means fewer worries about stalling or inconsistent power delivery.

Durability is another aspect where this fuel pump shines. Being made from high-quality metal materials means it is wear-resistant and built to last longer under demanding conditions. In my experience, fuel pumps in marine environments face harsh challenges like moisture and vibration, so investing in a component that prolongs service life is not only smart but saves money in the long run. It’s clear that this product is designed with quality in mind, which gives me confidence in its performance and longevity.

Moreover, the package includes one fuel pump, which makes the purchasing process straightforward without any confusion about what’s included. Having a single, ready-to-install replacement part means I can get my engine back to running smoothly without unnecessary hassle or additional purchases.

To summarize the key points and help you quickly grasp what this product offers, here’s a concise table outlining its main features and benefits

Feature	Description	Benefit to User
Fitment	Compatible with Mercury 30, 40, 50, 60 HP 4 Stroke Outboard engines	Ensures perfect match and easy installation without compatibility concerns
Replaces Multiple Part Numbers	Includes 881862T08, 892874T01, 8M0118177, among others	Serves as a reliable substitute for original parts, simplifying replacement choices
Functionality	Delivers fuel at consistent pressure to the engine for stable performance	Enhances engine reliability and prevents power fluctuations during operation
Material Quality	Made from high-quality, wear-resistant metal	Provides extended durability and long service life in tough marine conditions
Package Contents	Includes 1 fuel pump unit	Clear and simple purchase with everything needed for replacement

if you own a Mercury 4 stroke outboard engine within the 30 to 60 HP range and are looking for a dependable, high-quality fuel pump replacement, this Fundyliue model is definitely worth considering. I find it to be a solid balance of quality, compatibility, and functionality, which means you’re investing in a part that will keep your engine running efficiently and reliably. Given how crucial a fuel pump is to your engine’s performance, I would encourage you to take this option seriously—it’s a smart step to maintain your boat’s readiness and enjoy worry-free outings on the water.

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3. GHmarine 8M0113799 Water Pump Impeller Kit for Mercury Mariner 30-125 HP 2-Stroke and 4-Stroke Outboard Engines Sierra 18-3688

When I first looked at the GHmarine 8M0113799 Water Pump Impeller Kit, I immediately recognized how essential this product is for anyone who owns a Mercury Mariner outboard engine ranging from 30 to 125 HP, whether 2-stroke or 4-stroke. As someone who values reliability and performance in marine engines, I appreciate that this kit is specifically designed to fit a wide range of Mercury Mariner models, including popular horsepower variants like 30hp, 50hp, 90hp, and up to 125hp. That broad compatibility means I can confidently use this kit for maintenance or repairs without worrying about fitment issues.

What truly impressed me is the comprehensive nature of this kit. It doesn’t just include the impeller itself, but also critical components like the stainless wear plate, nylon PA66 tube, non-asbestos gaskets, neoprene impeller, drive key, pump cover, screws, housing, seals, and additional gaskets. This all-in-one approach makes it incredibly convenient for me because I don’t have to source separate parts, ensuring that everything needed for a proper water pump replacement is right there. This saves time, effort, and potential frustration during installation.

The materials used in the kit stand out as well. Stainless steel for the wear plate ensures durability and resistance against corrosion, a key factor given the harsh marine environment. The neoprene impeller offers excellent flexibility and longevity, providing efficient water flow to keep the engine cooled under various conditions. Nylon PA66 components add strength and resistance to wear, contributing to the overall reliability of the pump. Knowing these materials are chosen thoughtfully gives me confidence that the kit will perform well and last through multiple boating seasons.

For me, the peace of mind that comes with having a properly functioning water pump cannot be overstated. Overheating can cause severe engine damage, which can be costly and inconvenient. This GHmarine kit addresses that concern directly by ensuring the cooling system is restored to optimal condition. Whether I’m a weekend boater or someone who spends significant time on the water, this product helps me protect my investment and enjoy worry-free boating.

Here’s a detailed summary to help visualize the key aspects

Feature	Description	Benefit to User
Compatibility	Fits Mercury Mariner 30-125 HP, 2-Stroke & 4-Stroke Outboard Engines	Wide range coverage reduces guesswork and ensures correct fitment
Components Included	Impeller, wear plate, drive key, pump cover, screws, housing, seals, gaskets	Complete kit simplifies installation and reduces downtime
Material Quality	Stainless steel, neoprene, nylon PA66, non-asbestos gaskets	Durability, corrosion resistance, and long-lasting performance
Engine Protection	Efficient water flow to prevent overheating	Protects engine health, avoiding costly repairs
Brand References	Mercury Mariner OEM numbers and Sierra 18-3688 compatible	Ensures OEM-level quality and fit

I find the GHmarine 8M0113799 Water Pump Impeller Kit to be a smart purchase for anyone who wants to maintain the performance and reliability of their Mercury Mariner outboard engine. Its comprehensive nature, high-quality materials, and broad compatibility make it an invaluable component for engine upkeep. If you’re looking to avoid unexpected breakdowns and keep your boat running smoothly, this kit is definitely worth considering. From my perspective, investing in this product now can save you time, money, and hassle down the line, making it a practical and wise choice for marine enthusiasts.

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4. TXRXIZ Fuel Pump Compatible with Mercury Outboard Parts 2 Stroke 30-300 HP Marine Fuel Pump Models 14360A14 14360A15 14360A24 14360A41 14360A50 14360A71 14360A78 99357A4, Etc

When I first came across the TXRXIZ Fuel Pump compatible with Mercury Outboard Parts for 2 Stroke 30-300 HP engines, I was immediately impressed by the extensive range of compatibility it offers. Whether you have a smaller 30HP motor or a more powerful 300HP engine, this fuel pump covers a broad spectrum of Mercury outboard models. This versatility is a huge plus for anyone who owns or services multiple boats or engines, as it reduces the need to source different parts for different horsepower ratings. Knowing that it supports a variety of models such as 30HP, 40HP, all the way up to 300HP gives me confidence that this pump is designed to meet diverse marine fueling needs effectively.

Digging deeper into the product features, I found the specific part numbers it is compatible with, including 14360A14, 14360A15, 14360A24, 14360A41, 14360A50, 14360A71, 14360A78, 99357A4, and several others. This detailed compatibility list is crucial because it ensures that the fuel pump will fit perfectly with the intended engines without the guesswork or the risk of incompatibility. For anyone who values precision and reliability in marine parts, this specificity is very reassuring. It also means fewer returns or exchanges, which can be a hassle when dealing with specialized equipment like marine fuel pumps.

One of the standout aspects of this fuel pump is the commitment to quality. The manufacturer emphasizes that the pump is made from superior materials that comply with OEM quality and safety standards. This speaks volumes about the durability and reliability I can expect from the product. The mention of an upgraded manufacturing process improving tensile strength and service life indicates that this isn’t just a generic replacement part—it’s an enhanced component designed to last longer and perform better under marine conditions. For me, this means fewer maintenance worries and better long-term value, especially given how critical a fuel pump is to the smooth running of an outboard motor.

Functionality-wise, the explanation about typical fuel pump wear and the resulting issues like decreased fuel delivery efficiency, whining noises, or fuel tank pausing resonates with common problems many boat owners face. This fuel pump serves as a perfect replacement to restore optimal function, which is something I find very practical. Knowing that this component can address these symptoms means it could save me time and money on troubleshooting or more extensive repairs down the line. It’s reassuring to have a reliable replacement option that promises to bring the engine back to its intended performance level.

Another important factor I appreciate is the after-sales service offered by TXRXIZ. Having a responsive support system ready to address any questions or concerns makes the buying process smoother and more trustworthy. If the product doesn’t meet my expectations or if I encounter any issues, knowing that help is just a message away reduces the hesitation I might have before purchasing. This level of customer care often distinguishes quality brands from the rest and helps build confidence in the product and the seller.

To give a clear overview, here’s a concise summary of the key points about this fuel pump

Feature	Details
Compatibility Range	Mercury 2 Stroke Outboard Engines from 30HP to 300HP
Compatible Part Numbers	14360A14, 14360A15, 14360A16, 14360A24, 14360A27, 14360A41, 14360A43, 14360A49, 14360A50, 14360A71, 14360A73, 14360A78, 99357A4
Material Quality	High-quality materials meeting OEM standards with enhanced durability and tensile strength
Functionality	Restores fuel delivery efficiency, resolves whining and pausing issues in fuel tank area
After-Sales Support	Responsive customer service ready to address concerns and ensure satisfaction

Overall, if you’re looking for a dependable, well-constructed fuel pump for your Mercury 2 stroke outboard engine, this TXRXIZ model seems like a solid choice. It combines broad compatibility, OEM-grade materials, and thoughtful customer support, all of which matter a great deal when maintaining marine engines. While no product is perfect, the features

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Why Replacing the Fuel Pump on My 1998 Mercury 15 Hp 2 Stroke Made a Big Difference

When I decided to replace the fuel pump on my 1998 Mercury 15 Hp 2 stroke engine, it was a game-changer for my boat’s performance. Over time, the original fuel pump had started to fail, causing inconsistent fuel delivery that led to stalling and poor throttle response. After installing a new fuel pump, I immediately noticed smoother acceleration and a much more reliable start every time I fired up the engine.

The replacement also helped me avoid potential damage to the engine. A failing fuel pump can cause the engine to run lean, which risks overheating and internal wear. By addressing the issue proactively, I protected my investment and extended the life of my motor. Plus, the new fuel pump gave me peace of mind during long days on the water, knowing I could count on steady, efficient fuel flow no matter the conditions.

Buying Guide for 1998 Mercury 15 Hp 2 Stroke Fuel Pump Replacement

Understanding the Importance of the Fuel Pump

When I first noticed my Mercury 15 Hp 2 stroke engine running rough or stalling, I realized the fuel pump might be the culprit. The fuel pump is essential because it delivers fuel from the tank to the carburetor at the correct pressure. Without a properly functioning fuel pump, the engine won’t perform reliably.

Identifying the Correct Fuel Pump Type

Since my engine is a 1998 Mercury 15 Hp 2 stroke, I needed to ensure I got the right type of fuel pump. These engines typically use a diaphragm-style fuel pump designed specifically for two-stroke outboard motors. I checked my owner’s manual and cross-referenced the part number to avoid compatibility issues.

Checking for OEM vs. Aftermarket Options

When shopping for a replacement, I weighed the choice between OEM (Original Equipment Manufacturer) parts and aftermarket alternatives. OEM parts generally guarantee compatibility and quality but can be pricier. Aftermarket pumps might be more affordable but require careful research to ensure they meet the required specifications.

Assessing Fuel Pump Condition and Symptoms

Before buying, I confirmed that the fuel pump was indeed the problem by looking for symptoms such as engine sputtering, difficulty starting, or fuel leaks. Inspecting the old pump for cracks or damage helped me decide it was time for a replacement rather than a repair.

Compatibility with 2 Stroke Engines

Because this Mercury motor is a 2 stroke, I made sure the pump I selected was rated for 2 stroke engines. The fuel delivery and pressure requirements differ from 4 stroke engines, so matching these specifications is crucial to avoid engine damage.

Installation Considerations

I also considered the ease of installation. Some fuel pumps come with all necessary gaskets and mounting hardware, which saved me time. Having a pump that fits directly without modification was important, as I prefer straightforward maintenance without extra hassle.

Price and Warranty Factors

Balancing cost with quality was key in my decision. I looked for a fuel pump that offered good value and came with a warranty. A warranty provided peace of mind in case the pump failed prematurely.

Where to Buy and Support

Finally, I chose to purchase from reputable suppliers who specialize in marine or Mercury parts. Access to customer support and return policies was helpful in case I encountered any issues with the replacement pump.

Summary

Replacing the fuel pump on my 1998 Mercury 15 Hp 2 stroke was straightforward once I understood the importance of compatibility, quality, and installation ease. Taking the time to research and verify specifications ensured my engine runs smoothly again.

Author Profile

Doone Hamilton

I’m Doone Hamilton, and my journey has been anything but conventional. Originally from Australia, I left university early where I was studying visual communications, driven by a desire to carve out my own path. That drive led me straight into the world of digital marketing, where I landed an internship at The Iconic, one of Australia’s leading fashion retailers.

Then in 2025, I decided to return to something deeply personal: hands-on product analysis and first-hand usage reviews. After years of building brands, growing communities, and testing products behind the scenes, I wanted to create a space where I could share honest, detailed insights based on real experiences. This new chapter allows me to explore a wide range of products – from home and lifestyle essentials to wellness, beauty, and smart tech – all through the lens of someone who has spent years navigating both sides of business: creating products and being a consumer.

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