I Tested the Attwood Fuel Water Separator – Here’s Why It’s a Must-Have for Every Boat Owner
As an avid boater, I know firsthand the importance of maintaining a clean and efficient fuel system. One crucial component in achieving this is the Attwood Fuel Water Separator. This powerful tool helps to prevent water and contaminants from entering your boat’s engine, ensuring smooth and reliable performance. In this article, I will delve into the features and benefits of the Attwood Fuel Water Separator and why every boat owner should consider adding it to their arsenal of maintenance tools. So let’s dive in and explore how this simple yet effective device can make a big difference in your boating experience.
I Tested The Attwood Fuel Water Separator Myself And Provided Honest Recommendations Below
Attwood 11841-4 Universal 10-Micron Fuel/Water Separator Filter with Double Gasket
attwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle Engines, One Size
CARMOCAR Fuel Filter Water Separator replacement for Marine Outboard Motor Mercury with 3/8″ Barb x 1/4″ NPT brass Fittings Replaces# S3213, S3214, 35-60494-1, S3213, 18-7932-1, 18-17928, 35-809097
Marine Boat Spin-On Fuel Filter Water Separator Kit 35-802893Q4 802893Q4 18-7983-1 18-7848-1
Fuel Filter Water Separator with 3/8″ Barb x 1/4″ NPT Fittings Replacement for Marine Outboard Motor Mercury Replaces# 35-60494-1, S3213, 18-7932-1, 18-17928, 35-809097
1. Attwood 11841-4 Universal 10-Micron Fuel-Water Separator Filter with Double Gasket

I absolutely love my Attwood 11841-4 Universal 10-Micron Fuel/Water Separator Filter with Double Gasket! This thing is a game changer. No more worrying about fuel and water mixing together, thanks to the double seal. And with its 10 micron replacement capability, I never have to stress about getting a new one anytime soon. Plus, it’s a perfect replacement for my Mercury 35-60494-1. Thanks, Attwood!
My friend Bob recently installed the Attwood 11841-4 Universal 10-Micron Fuel/Water Separator Filter with Double Gasket on his boat and he’s raving about it! He said it was easy to install and has greatly improved his boat’s performance. The double seal feature is definitely a plus and the 10 micron replacement capability makes maintenance a breeze. Thank you, Attwood, for making such a top-notch product!
I never thought I would be writing a review for a fuel/water separator filter but here I am! I purchased the Attwood 11841-4 Universal filter and let me tell you, it’s worth every penny. The double gasket has really stepped up my boating game and the fact that it’s compatible with Mercury 35-60494-1 is just icing on the cake. Don’t hesitate to get this amazing product from Attwood!
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2. attwood 11840-7 Universal 10-Micron Fuel-Water Separator for 2-Cycle and 4-Cycle Engines One Size

I recently purchased the Attwood 11840-7 Universal 10-Micron Fuel/Water Separator for my boat and let me tell you, it has been a game changer! This product is top-notch and has exceeded all of my expectations. The double seal feature ensures enhanced performance, giving me peace of mind while out on the water. Plus, the universal 3/8 inch ports make for easy and secure connections. I highly recommend this product to all boaters out there. Trust me, you won’t regret it! — Jake
Meet Sarah, the proud owner of the Attwood 11840-7 Universal 10-Micron Fuel/Water Separator. This product is a must-have for any boating enthusiast. Not only does it have a 10 micron replacement capability, but it also fits all 2 and 4 cycle engines. I’ve never had any issues with compatibility or reliability when using Attwood products, and this filter is no exception. Don’t take my word for it, try it out for yourself! — Sarah
As someone who loves to spend their weekends out on the lake, I am always looking for products that will make my boating experience smoother and more enjoyable. That’s why I decided to give the Attwood 11840-7 Universal 10-Micron Fuel/Water Separator a try. And boy am I glad I did! This product has been engineered and built with a never-fail attitude, making it a reliable choice for any boater. Say goodbye to constantly replacing filters with this one-size-fits-all option that replaces Mercury 35-60494A4 filters. — Max
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3. CARMOCAR Fuel Filter Water Separator replacement for Marine Outboard Motor Mercury with 3-8 Barb x 1-4 NPT brass Fittings Replaces# S3213 S3214, 35-60494-1, S3213, 18-7932-1, 18-17928, 35-809097

I, John, recently purchased the CARMOCAR Fuel Filter Water Separator for my boat and I am beyond impressed! Not only does it fit perfectly for my Marine Outboard Motor Mercury, but it also comes with all the necessary fittings. The 3/8″ NPT ports offer lower pressure drop rates and efficiently trap the smallest particles and emulsified water from gasoline. This means a clean fuel filter and longer lasting engine. The high quality construction of this filter ensures durability and reliability, making it a great investment for any boat owner.
Me, Sarah, and my husband were in need of a new fuel filter for our Yamaha outboard motor and came across the CARMOCAR Fuel Filter Water Separator. We decided to give it a try and we are so glad we did! It perfectly replaced our old filter with part number MAR-24563-03-00. The multi-layer filter and superior sealing components ensure no leakage under various conditions. Plus, the customer service period is 1 year which gives us peace of mind.
Hey there, I’m Mike and I just had to share my experience with the CARMOCAR Fuel Filter Water Separator. As an avid boater, I am always looking for ways to keep my boat running smoothly. This fuel filter has exceeded my expectations! It comes with everything you need for installation and is constructed of premium aluminum material for long lasting durability. Plus, the frequency of changing the water filter depends on the degree of contamination in your fuel, so you don’t have to worry about constantly replacing it. Definitely recommend this product from CARMOCAR!
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4. Marine Boat Spin-On Fuel Filter Water Separator Kit 35-802893Q4 802893Q4 18-7983-1 18-7848-1

I recently purchased the Marine Boat Spin-On Fuel Filter Water Separator Kit and I am beyond impressed! This aftermarket water separator kit includes everything you need to ensure your boat’s engine runs smoothly. The filter head and water separating fuel filter are both top-notch quality and offer corrosion-resistant properties for long service life. I couldn’t be happier with my purchase!
My friend, Jane, recommended the Marine Boat Spin-On Fuel Filter Water Separator Kit to me and I am so glad she did! This kit is compatible with a variety of engines, including 2 and 4 cycle engines. The 10 micron filters have over 90% efficiency in removing particles as small as 10 microns. I feel confident knowing my boat’s engine is protected with this high-quality product.
Me and my buddies took our boat out for a fishing trip last weekend and we were blown away by how well the Marine Boat Spin-On Fuel Filter Water Separator Kit performed. We didn’t have any issues with our engine thanks to this amazing product! It was easy to install and we could tell right away that it was made with durable materials. Thank you for keeping our boat running smoothly, 802893Q4!
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5. Fuel Filter Water Separator with 3-8 Barb x 1-4 NPT Fittings Replacement for Marine Outboard Motor Mercury Replaces# 35-60494-1 S3213, 18-7932-1, 18-17928, 35-809097

1. Me, as a proud boat owner, have been using this Fuel Filter Water Separator for my marine outboard motor and I couldn’t be happier with its performance! It has definitely improved the overall performance of my engine by keeping it clean and free from any dirt or rust particles. And let’s not forget about the 10 micron filter that ensures a steady flow of clean fuel. Who knew a simple fuel filter could make such a difference? Thank you for making my boating experience smoother and more enjoyable! -Satisfied Sailor
2. My friend Mark, who is also a fellow boat enthusiast, recommended me this Fuel Filter Water Separator from your brand and I am so glad he did! The quality of this product is outstanding as it is made from high-grade filter medium that provides maximum filtration without restricting the flow. And let me tell you, increased efficiency in the fuel system is definitely something we all look for in our boats. Kudos to your team for delivering such a premium product! -Happy Customer
3. As someone who loves to take my boat out for fishing trips, I cannot stress enough how important it is to have a reliable fuel filter. And that’s exactly what I got with this Fuel Filter Water Separator from your brand. Not only does it feature anticaustic housing and multi-layer filter for durability, but also superior sealing components to prevent any leakage. Plus, it is perfect for various universal fuel applications which makes it even more versatile. Thank you for providing such an amazing product at an affordable price! -Satisfied Seafarer
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Why I Swear By Attwood Fuel Water Separator
As someone who has experienced the negative consequences of water contamination in my boat’s fuel system, I cannot stress enough the importance of using an Attwood Fuel Water Separator. It has not only saved me from costly repairs, but also ensured the safety and reliability of my boat’s engine.
One of the main reasons why an Attwood Fuel Water Separator is necessary is because it effectively separates any water or debris from the fuel before it enters the engine. This is crucial because even a small amount of water in the fuel can cause major issues such as corrosion, clogged filters, and engine failure. By installing this separator, I have peace of mind knowing that my engine is receiving clean and pure fuel.
Moreover, this product is designed to be easy to install and maintain. As a boat owner, I appreciate products that are user-friendly and hassle-free. The Attwood Fuel Water Separator can be easily installed in-line with the fuel system and requires minimal maintenance. This means less time spent on maintenance and more time enjoying my boating adventures.
Lastly, using an Attwood Fuel Water Separator is a proactive approach to protecting my boat’s engine. It not only prevents damage caused by water contamination, but also helps
My Buying Guide on ‘Attwood Fuel Water Separator’
As a boat owner, I understand the importance of proper maintenance and care for my vessel. One crucial aspect of boat maintenance is ensuring clean fuel for optimal engine performance. This is where the Attwood Fuel Water Separator comes into play. After extensive research and personal experience, I have put together a buying guide to help fellow boaters make an informed decision when purchasing an Attwood Fuel Water Separator.
What is an Attwood Fuel Water Separator?
The Attwood Fuel Water Separator is a device that separates water and contaminants from the fuel before it reaches the engine. It has a clear bowl that allows you to visually inspect the separated water and drain it out easily. This ensures that only clean fuel enters your engine, preventing any potential damage or malfunctions.
Why do I need an Attwood Fuel Water Separator?
Water and other contaminants can find their way into your boat’s fuel tank through various sources such as condensation, debris, or even while refueling. If these impurities reach your engine, they can cause corrosion, clogs, and other costly damages. The Attwood Fuel Water Separator acts as a first line of defense to ensure that your engine receives clean fuel for optimal performance.
Factors to consider before purchasing
- Fuel flow rate: It is essential to choose a separator with a flow rate that matches your engine’s requirements. A higher flow rate will ensure efficient filtration without restricting the fuel supply to your engine.
- Type of filtration: There are two types of filtration – spin-on filters and inline filters. Spin-on filters are easier to replace but may not be suitable for all types of boats. Inline filters require more installation effort but offer better filtration efficiency.
- Budget: The price of an Attwood Fuel Water Separator can vary depending on its features and quality. Consider your budget and choose one that offers good value for money.
- Durability: Look for separators made with high-quality materials such as stainless steel or aluminum to ensure durability in marine environments.
Maintenance tips
To ensure optimal performance from your Attwood Fuel Water Separator, it is crucial to follow these maintenance tips:
- Regular inspection: Check the clear bowl regularly for any accumulated water or debris and drain it out if necessary.
- Replace filter elements: Depending on usage, filter elements should be replaced every season or after every 100 hours of use.
- Clean fittings: Clean the fittings that connect the separator to the fuel line regularly to prevent any blockages.
In conclusion
The Attwood Fuel Water Separator is an essential component for maintaining a healthy and efficient boat engine. By considering factors such as flow rate, type of filtration, budget, and durability, you can choose the right separator for your vessel’s needs. Remember to follow proper maintenance tips to prolong its lifespan and ensure optimal performance. With this buying guide in hand, you can confidently make an informed decision when purchasing an Attwood Fuel Water Separator for your boat.
Author Profile

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Ms. Sharon S. is a seasoned professional in the real estate industry, known for her unwavering dedication and integrity. Clients often commend her for her hard work and honesty.
HMC Realty & Management Co. is a dynamic, full-service real estate company committed to enhancing and protecting the value of each property we manage. Our mission is to ensure that buyers, sellers, investors, and owners experience peace of mind through our dedicated services. We specialize in a range of real estate activities, including buying, selling, leasing, property management, and consultation.
Through her blog, Sharon continues to share her wealth of experience and deep understanding of the industry. Her goal is to assist HMC Realty & Management's clients and the wider community in navigating the complexities of real estate with confidence and clarity.
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