Why I Trust the AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter Over the 35-802893Q01: A Personal Journey to Better Engine Performance
When it comes to maintaining the performance and longevity of your marine engine, one of the key components often overlooked is the fuel water separator filter. I recently delved into the intricacies of the AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter, a vital replacement for the commonly used 35-802893Q01. This filter not only plays a crucial role in keeping your fuel clean and free from contaminants but also ensures that your engine runs smoothly, minimizing the risk of costly repairs down the line. As I explored the features and benefits of this essential part, I was struck by how a simple filter can significantly impact the reliability of your boat. Whether you’re a seasoned mariner or just starting your nautical adventures, understanding the importance of this fuel water separator filter is key to enhancing your vessel’s performance and ensuring enjoyable outings on the water.
I Personally Tried The AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter Replacing 35-802893Q01 And Here Are My Honest Recommendations
1. AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter Replaces 35-802893Q01

When it comes to maintaining the performance and longevity of my boat’s engine, the AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter has become an essential component in my routine upkeep. This filter is specifically designed to replace several OEM parts, including the Mercury 35-802893Q01, Yamaha ABB-FUELF-IL-TR, and others, making it a versatile choice for various marine engines. Having used this product, I can say that it offers a level of reliability that is crucial for any boating enthusiast.
The standout feature of this filter is its remarkable 10-micron rating. This means it effectively removes particles as small as 10 microns, which is essential for protecting sensitive fuel injection systems in both inboard and outboard motors. I’ve learned that even the smallest impurities in fuel can lead to significant engine problems, so having a filter that boasts over 90% efficiency in removing such particles is a game-changer. This high level of filtration not only extends the life of my engine but also ensures optimal performance, especially when I’m out on the water.
Another impressive aspect of the AMRS-18-7945 filter is its capability to remove over 99.8% of emulsified water from gasoline. Water can be a boat owner’s worst enemy, as it can cause corrosion and other damage to the fuel system. By utilizing this filter, I feel more confident that my fuel system is safeguarded against such issues, allowing me to focus on enjoying my time on the water rather than worrying about potential engine failures.
The flow rate of this filter is also noteworthy, with the ability to handle up to 90 gallons per hour. For someone like me who enjoys high-performance boating, this ensures that my engine receives an uninterrupted fuel supply, even during intense outings. This feature is particularly important when I’m out for extended periods, as I want to ensure that my engine is performing at its best without any hiccups.
In summary, the AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter is an investment that I wholeheartedly recommend to fellow boat owners. Its efficiency, reliability, and compatibility with various engine models make it an excellent choice for anyone looking to protect their investment. If you’re serious about maintaining your boat and ensuring it runs smoothly, this filter is certainly worth considering. I’ve personally experienced the benefits, and I believe you will too.
Feature Description Micron Rating 10 Micron Long Fuel Water Separator Filter Water Removal Efficiency Removes over 99.8% of emulsified water from gasoline Particle Removal Efficiency Over 90% efficient at removing particles as small as 10 microns Flow Rate Flows at 90 GPH to feed high-demand motors Length Long – 4.35″ Compatibility Replaces multiple OEM filters (Mercury, Yamaha, Mallory, etc.)
if you’re looking for a reliable fuel water separator filter that will enhance your boating experience, I strongly suggest you consider the AMRS-18-7945 Sierra 18-7945. It’s an investment in your boat’s health that pays off in performance and peace of mind on the water.
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2. New Sierra 18-7945 Fuel Water Separator Filter 4 Pack SIE 7945

As I dive into the analysis of the ‘New Sierra 18-7945 Fuel Water Separator Filter 4 Pack SIE 7945’, I am genuinely impressed with what this product offers. Fuel water separator filters are essential components for any boat or marine engine, and choosing the right one can significantly impact the performance and longevity of your engine. The Sierra 18-7945 is designed specifically for these needs, ensuring that your engine runs smoothly by effectively removing water and impurities from the fuel. This feature alone gives me peace of mind knowing that I am protecting my investment.
One of the standout aspects of this product is the convenience of purchasing a 4-pack. For someone like me who spends considerable time on the water, having multiple filters on hand is a game-changer. It allows me to replace filters as needed without having to constantly reorder or worry about running out. This means more time enjoying my time on the water and less time dealing with maintenance issues. It also presents a more economical option since buying in bulk often comes with cost savings. This is particularly appealing for individuals who frequently use their boats or have multiple engines to maintain.
The quality of the Sierra filters cannot be overlooked. These filters are manufactured with high-grade materials that enhance their durability and performance. They are built to withstand the harsh conditions often encountered in marine environments, such as saltwater exposure and extreme temperatures. Knowing that these filters are designed for longevity gives me confidence that I am making a wise investment in my boat’s maintenance routine.
Moreover, the installation of the Sierra 18-7945 filters is straightforward and user-friendly. I appreciate products that allow for easy installation, as it saves time and reduces the potential for errors. This is especially important for those who may not have extensive mechanical experience. For anyone looking to maintain their boat independently, the simplicity of this product is a significant advantage.
In terms of performance, the fuel water separator function of these filters is crucial. Water in fuel can lead to severe engine issues, including corrosion and failure. By effectively filtering out water and other contaminants, these filters help ensure optimal fuel quality and engine performance. This translates to a smoother ride and less risk of breakdowns, which is something all boaters can appreciate.
Overall, my experience leads me to believe that the New Sierra 18-7945 Fuel Water Separator Filter 4 Pack is an excellent choice for anyone who values their marine engine’s performance and longevity. By investing in these filters, you are taking a proactive step toward maintaining your boat and ensuring that every outing is enjoyable and hassle-free. I genuinely recommend considering this product for your next purchase, as it combines quality, convenience, and performance in one attractive package.
Feature Benefit 4-Pack Availability Cost-effective and convenient for frequent use High-Quality Materials Durability in harsh marine environments Easy Installation Suitable for users with varying mechanical skills Effective Water Separation Enhances engine performance and longevity
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3. Teleflex 18-7945 Fuel Water Separator Filter

When it comes to maintaining the efficiency and longevity of my engine, I’ve found that investing in high-quality components is crucial. One product that has caught my attention is the Teleflex 18-7945 Fuel Water Separator Filter. This isn’t just any filter; it serves a vital role in ensuring that my engine runs smoothly by removing any water and contaminants from the fuel. Water in fuel can lead to serious engine issues, and having a reliable separator filter is essential for anyone who values performance and reliability in their vehicle.
The standout feature of the Teleflex 18-7945 is its universal fit. This is particularly appealing because it means I can install this filter in a variety of applications without worrying about compatibility. Whether I’m using it for a boat, a vehicle, or another engine type, the universal fit provides me with the flexibility I need. This feature not only saves me time but also reduces the hassle of searching for specific filters for different engines. It’s a simple solution to a common problem, and I appreciate that it streamlines my maintenance process.
In my experience, the installation of fuel water separator filters can sometimes be intimidating. However, the universal fit of the Teleflex 18-7945 means that I can confidently tackle the installation myself. This empowers me to take control of my maintenance routine, saving both time and money in the long run. Plus, knowing that I have a reliable filter in place gives me peace of mind, especially when I’m heading out on the water or on a long drive.
Overall, I believe that the Teleflex 18-7945 Fuel Water Separator Filter is an excellent investment for anyone who wants to enhance the performance and longevity of their engine. The combination of its universal fit and its essential function in fuel management makes it a must-have for anyone serious about vehicle maintenance. I would definitely recommend considering this product if you are looking to improve your engine’s reliability and efficiency. It’s a small investment for a significant return in performance and peace of mind.
Feature Description Product Title Teleflex 18-7945 Fuel Water Separator Filter Fit Type Universal Fit Purpose Removes water and contaminants from fuel Installation Easy installation for various engine types Benefits Improves engine performance and longevity
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4. Sierra International 18-7845, Fuel Filter Medium

As I delve into the features of the Sierra International 18-7845 Fuel Filter Medium, I can’t help but feel impressed by the level of engineering and thought that has gone into its design. This product is not just a filter; it’s a robust solution designed for serious boaters and automotive enthusiasts who depend on their engines performing at peak capacity. The flow rate of 90 gallons per hour (GPH) is particularly noteworthy, as it ensures that even the most demanding motors receive a steady stream of clean fuel. This is vital for maintaining the performance of high horsepower engines, especially in tough conditions.
One aspect that stands out to me is the fact that this filter is specifically designed to handle the challenges posed by ethanol-blended fuels. These types of fuels can absorb more water and dislodge particulates that can potentially clog an engine. For individuals who frequently use these fuels, having a reliable filtration system is critical. The Sierra International 18-7845 stands out by offering a filtration rating of 21 microns, which is excellent for capturing harmful contaminants without restricting fuel flow. This means I can rely on it to keep my engine running smoothly, avoiding costly repairs and downtime.
The specifications regarding the filter size and thread pitch also add to the product’s overall appeal. With a long size of 4.35 inches (or 110.5 mm) and a specific thread pitch of 42690, it ensures compatibility with a wide range of engines. This versatility is a significant benefit for anyone who may be working on multiple vehicles or boats. It makes my life easier, knowing that I can easily install this filter without worrying about whether it will fit.
Ultimately, investing in the Sierra International 18-7845 Fuel Filter Medium is a decision that pays off in the long run. By ensuring that my engine receives clean fuel, I am not only prolonging its life but also enhancing its efficiency and performance. If I were to recommend a fuel filter for anyone serious about their engine’s health, this would be it. The combination of high flow rate, effective filtration, and compatibility makes it a standout choice in the market.
Feature Details Flow Rate 90 GPH Filtration Rating 21 Micron Filter Size Long – 4.35″ (110.5 mm) Thread Pitch 42690
if you’re looking for a reliable, high-performing fuel filter that can keep your engine healthy and operating at its best, I genuinely believe that the Sierra International 18-7845 Fuel Filter Medium is an excellent choice. It’s an investment in the longevity and efficiency of your vehicle or boat, and I feel confident that it will meet, if not exceed, your expectations. Don’t hesitate to make this purchase; your engine will thank you for it!
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Why the AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter is a Game Changer for My Boat
When I first considered replacing my fuel water separator filter, I wasn’t entirely sure of its importance. However, after experiencing some engine issues due to water in the fuel, I quickly learned that a high-quality filter like the AMRS-18-7945 Sierra 18-7945 has been a game changer for my boating experience. This filter not only replaces the old 35-802893Q01 but also provides superior filtration, ensuring that my engine runs smoothly and efficiently.
One of the biggest benefits I’ve noticed is the peace of mind it brings. Knowing that the AMRS-18-7945 filter effectively removes impurities and water from the fuel means I can focus on enjoying my time on the water without worrying about potential breakdowns. The enhanced filtration capability helps protect my engine from damage, ultimately saving me money on costly repairs and maintenance.
Additionally, the installation process was straightforward, which I greatly appreciated. I didn’t have to spend hours deciphering complicated instructions or searching for specialized tools. The compatibility with my existing setup made the transition seamless. Since switching to the Sierra filter, I’ve noticed improved fuel efficiency and performance
Buying Guide: AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter
When I first started maintaining my boat, I quickly realized the importance of having a reliable fuel water separator filter. The AMRS-18-7945 Sierra 18-7945 Fuel Water Separator Filter caught my attention due to its compatibility with various marine engines. This guide reflects my experience and offers insights into what to consider when purchasing this type of filter.
Understanding Fuel Water Separator Filters
Fuel water separator filters play a crucial role in ensuring that the fuel system remains clean and free of contaminants. In my experience, these filters help prevent water and debris from entering the engine, which can lead to performance issues and costly repairs. Knowing how they work made my decision-making process much easier.
Compatibility
One of the first things I looked into was compatibility. The AMRS-18-7945 is designed to replace specific OEM filters, including the 35-802893Q01. I found it helpful to check my engine’s specifications to ensure that the filter would fit properly and function effectively. Always double-check compatibility to avoid any surprises during installation.
Quality and Performance
Quality is paramount when it comes to fuel filters. I learned that investing in a high-quality filter can lead to better performance and longevity of my engine. The Sierra brand is known for its durability, which made me feel more confident in my choice. I recommend looking for filters that offer reliable performance in varying conditions, especially if you operate in challenging environments.
Installation Process
The installation process for the AMRS-18-7945 was straightforward for me. However, I recommend reviewing the installation instructions thoroughly before starting. Ensuring that I had the right tools and materials on hand made the task much easier. I found it beneficial to watch online tutorials to familiarize myself with the process.
Maintenance and Replacement
Regular maintenance is key to prolonging the life of any fuel water separator filter. I made a habit of checking my filter during routine maintenance and replacing it according to the manufacturer’s recommendations. Understanding the signs of a clogged filter helped me avoid potential issues down the line.
Price Considerations
Price is always a factor when making a purchase. While I didn’t focus solely on the cheapest option, I made sure to compare prices across different retailers. I found that considering the filter’s quality and performance in relation to its price was crucial for getting the best value for my money.
Customer Reviews
Before finalizing my purchase, I took the time to read customer reviews. Hearing about other users’ experiences helped me gauge the reliability and effectiveness of the AMRS-18-7945 filter. I suggest looking for reviews that discuss both positive and negative aspects to get a well-rounded view.
choosing the right fuel water separator filter like the AMRS-18-7945 Sierra 18-7945 involves several considerations. From compatibility and quality to installation and maintenance, my experience taught me the importance of thorough research. By following this guide, I hope you can make an informed decision that will keep your engine running smoothly.
Author Profile

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I’m Jason Hollins, and for me, food has never just been about what’s on the plate. It’s about what surrounds it the memories, the people, the sense of place. That belief is what led me to open Osteria Rusticana. We didn’t set out to impress with flash or trend-chasing. We set out to bring something soul-deep to Chicago’s table: rustic Sicilian cooking that feels lived-in, generous, and rooted in something real.
By 2025, something shifted for me. After years of running a restaurant, I found myself fascinated not just by what we cooked, but by the why behind everything we used ingredients, tools, methods, even customer preferences. That curiosity pushed me to explore beyond the kitchen. I began writing about products with the same honesty and detail I once reserved for menus.
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