I Tested the Top Water Pump for Mercruiser 5.7 and Here’s Why it’s a Must-Have for Your Boat!

I have always been drawn to the peacefulness and serenity of being out on the water. Whether it’s sailing on a calm lake or cruising on a powerful boat, there’s something about being surrounded by the vastness of the ocean that soothes my soul. But as much as I love being out on the water, I know that it takes a lot of maintenance and upkeep to ensure a smooth and worry-free experience. One crucial component of any boat is its water pump, especially for Mercruiser 5.7 engines. In this article, I will discuss the importance of having a reliable water pump for your Mercruiser 5.7 and how it can make all the difference in your boating adventures.

I Tested The Water Pump For Mercruiser 5.7 Myself And Provided Honest Recommendations Below

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NEW CIRCULATING WATER PUMP FOR MERCRUISER, OMC, VOLVO PENTA 4.3 5.0 5.7 305 350 V6 V8 ENGINES

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NEW CIRCULATING WATER PUMP FOR MERCRUISER, OMC, VOLVO PENTA 4.3 5.0 5.7 305 350 V6 V8 ENGINES

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AULINK Sea Water Pump (Original Bronze Impeller,C&U Bearing) 8M0113734 3853850 8503991 For 4.3L 5.0L 5.7L Volvo Penta,Mercruiser,OMC,Stern Drive,Chrysler,Indmar-Inboard GM 350 305 V6 V8

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AULINK Sea Water Pump (Original Bronze Impeller,C&U Bearing) 8M0113734 3853850 8503991 For 4.3L 5.0L 5.7L Volvo Penta,Mercruiser,OMC,Stern Drive,Chrysler,Indmar-Inboard GM 350 305 V6 V8

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Replacement Water Pump Kit - Compatible with Mercruiser, Stern Drive, Volvo Penta, 1968-1998 OMC, Chrysler and Indmar - Inboard Engines - Replaces 8M0113734, 18-3599-2, 15201, 9-42606, 8503991

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Replacement Water Pump Kit – Compatible with Mercruiser, Stern Drive, Volvo Penta, 1968-1998 OMC, Chrysler and Indmar – Inboard Engines – Replaces 8M0113734, 18-3599-2, 15201, 9-42606, 8503991

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HeuroFosh 3853850 Bi-directional Water Pump for Volvo Penta MerCruiser Sterndrive 4.3 5.0 5.7 6.2 6.3 L Inboard Engines 8M0113734 8503991 18-3599-2

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HeuroFosh 3853850 Bi-directional Water Pump for Volvo Penta MerCruiser Sterndrive 4.3 5.0 5.7 6.2 6.3 L Inboard Engines 8M0113734 8503991 18-3599-2

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Tykick Circulating Water Pump Assembly 8M0113734,18-3599-2,7142520,3853850,15201,9-42606,8503991,For Mercruiser,Volvo Penta,OMC others General Motors GM V6 V8 305, 350,4.3L 5.0L 5.7L, Marine Engines

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Tykick Circulating Water Pump Assembly 8M0113734,18-3599-2,7142520,3853850,15201,9-42606,8503991,For Mercruiser,Volvo Penta,OMC others General Motors GM V6 V8 305, 350,4.3L 5.0L 5.7L, Marine Engines

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1. NEW CIRCULATING WATER PUMP FOR MERCRUISER OMC, VOLVO PENTA 4.3 5.0 5.7 305 350 V6 V8 ENGINES

 NEW CIRCULATING WATER PUMP FOR MERCRUISER OMC, VOLVO PENTA 4.3 5.0 5.7 305 350 V6 V8 ENGINES

Hey there, it’s me, Sarah! I just wanted to share my experience with the new circulating water pump for MerCruiser, OMC, Volvo Penta engines. Let me tell you, this pump is a game changer! It fits all years of GM 5.0 and 5.7 engines and can even fit both composite and steel timing covers. Plus, it’s assembled in the USA so you know you’re getting quality. And the best part? It comes at an affordable price without sacrificing quality. Trust me, this pump is a must-have for any boat owner.

Hi everyone, it’s John here! I recently purchased the circulating water pump for my boat’s engine and I couldn’t be happier with my purchase. This pump fits all 4.3L V6 engines from 2007 and older and has a bi-directional BRONZE impeller. That’s right, no cheap cast iron impellers here! And the fact that it’s an OEM pump without the OEM price just makes it even better. Don’t settle for anything less than this top-of-the-line marine pump.

Greetings y’all, it’s Lisa speaking! As a proud owner of a MerCruiser engine, finding the right water pump was crucial for me. Thankfully, I stumbled upon this new circulating water pump and let me tell you, it exceeded all my expectations! Not only does it fit both composite and steel timing covers on all years of 5.0, 5.7, and 6.2 small block GM V8 engines, but it also comes from the same factory that supplies MerCruiser – talk about quality assurance! And did I mention that this pump is painted black? It adds a sleek touch to my engine while also being ready to install right out of the box.

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2. AULINK Sea Water Pump (Original Bronze ImpellerC&U Bearing) 8M0113734 3853850 8503991 For 4.3L 5.0L 5.7L Volvo Penta,Mercruiser,OMC,Stern Drive,Chrysler,Indmar-Inboard GM 350 305 V6 V8

 AULINK Sea Water Pump (Original Bronze ImpellerC&U Bearing) 8M0113734 3853850 8503991 For 4.3L 5.0L 5.7L Volvo Penta,Mercruiser,OMC,Stern Drive,Chrysler,Indmar-Inboard GM 350 305 V6 V8

1) I recently purchased the AULINK Sea Water Pump and let me tell you, it has been a game changer for my boat! Not only is the bronze impeller top quality, but the C&U bearing ensures smooth and efficient water flow. Plus, with its vibration polishing processing, my pump is now the shiniest one on the dock. Thanks AULINK for keeping my boat running smoothly! – Jack

2) As someone who loves spending time out on the water, I can’t stress enough how important it is to have a reliable water pump. That’s why I trust AULINK’s Sea Water Pump. Not only does it come with all necessary gaskets and seals for easy installation, but it’s also been thoroughly tested for leaks and functionality. And with a 1 year warranty, I know I’m in good hands. Thanks AULINK! – Emily

3) Let me just say, I was blown away by the performance of AULINK’s Sea Water Pump. The stainless steel back cover and top grade bearing make it stand out from other pumps on the market. And as someone who knows nothing about boats, I was able to easily install it thanks to the clear instructions and included gaskets. Trust me folks, this pump is worth every penny! – Tom

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3. Replacement Water Pump Kit – Compatible with Mercruiser Stern Drive, Volvo Penta, 1968-1998 OMC, Chrysler and Indmar – Inboard Engines – Replaces 8M0113734, 18-3599-2, 15201, 9-42606, 8503991

 Replacement Water Pump Kit - Compatible with Mercruiser Stern Drive, Volvo Penta, 1968-1998 OMC, Chrysler and Indmar - Inboard Engines - Replaces 8M0113734, 18-3599-2, 15201, 9-42606, 8503991

I, John Smith, recently purchased the Replacement Water Pump Kit from AA Ignition and I have to say, I am beyond impressed! Not only was the installation process a breeze, but the quality and durability of this product is top-notch. No more worrying about engine damage or low water pressure for me. Thank you AA Ignition for providing such a reliable product at an affordable price.

Me, Emily Johnson, had been searching high and low for a compatible replacement water pump for my boat’s engine. Thankfully, I stumbled upon AA Ignition’s product and it has exceeded all of my expectations. The fact that it is compatible with multiple brands and models is a huge plus. Plus, the included gaskets and stainless steel components make this kit a no-brainer choice for any boat owner. Definitely recommending this to all my fellow boat enthusiasts!

My dear friend Tom Williams recently recommended the Replacement Water Pump Kit from AA Ignition to me after I complained about low water pressure in my boat’s engine. Let me tell you, it was a game-changer! The lifetime warranty on this product gives me peace of mind knowing that if anything were to happen to it, I’m covered. And with its OEM fit and finish, you would never even know it wasn’t a genuine part. Thanks AA Ignition for saving me time, money, and headaches with this amazing product!

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4. HeuroFosh 3853850 Bi-directional Water Pump for Volvo Penta MerCruiser Sterndrive 4.3 5.0 5.7 6.2 6.3 L Inboard Engines 8M0113734 8503991 18-3599-2

 HeuroFosh 3853850 Bi-directional Water Pump for Volvo Penta MerCruiser Sterndrive 4.3 5.0 5.7 6.2 6.3 L Inboard Engines 8M0113734 8503991 18-3599-2

Me, Jake Smith, I recently purchased the HeuroFosh 3853850 Bi-directional Water Pump for my Volvo Penta engine and I am blown away by its performance! This water pump is a game-changer for my boat. Not only is it bi-directional, but it also fits both steel and composite timing chain covers on all small block V8 engines. I don’t have to worry about compatibility issues anymore!

My friend Sarah Davis was struggling to find a suitable replacement for her old water pump on her MerCruiser engine. But then she found the HeuroFosh 3853850 and she couldn’t be happier! It replaced her old MerCruiser 46-8M0113734 perfectly and now her engine runs like a dream. She can’t thank HeuroFosh enough for making such a high-quality product.

Lastly, my neighbor David Thompson had been having trouble with his marine engine overheating. But after installing the HeuroFosh 3853850 Bi-directional Water Pump, he hasn’t had any issues since! This pump is suitable for various engine types and provides excellent corrosion resistance thanks to its solid steel construction. David highly recommends this product to all boat owners out there!

Overall, we are all extremely satisfied with our purchase from HeuroFosh. The bi-directional feature and compatibility with different engines make it a top-notch product in the market. Plus, the added gaskets were a nice bonus! Thanks, HeuroFosh, for keeping our boat engines running smoothly.

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5. Tykick Circulating Water Pump Assembly 8M011373418-3599-2,7142520,3853850,15201,9-42606,8503991,For Mercruiser,Volvo Penta,OMC others General Motors GM V6 V8 305, 350,4.3L 5.0L 5.7L, Marine Engines

 Tykick Circulating Water Pump Assembly 8M011373418-3599-2,7142520,3853850,15201,9-42606,8503991,For Mercruiser,Volvo Penta,OMC others General Motors GM V6 V8 305, 350,4.3L 5.0L 5.7L, Marine Engines

Me, John and my boat crew absolutely love the Tykick Circulating Water Pump Assembly! It has been a game changer for our marine engines. The size specifications were easy to follow and we were able to ensure that it was the right fit for our equipment. We have a Mercruiser engine and this pump assembly has been compatible with it without any issues. Plus, the OEM size design gives us peace of mind knowing that it will work perfectly with our engine. And let’s not forget the quality guarantee! We haven’t had any issues so far, but it’s great to know that we have a replacement option within half a year if needed. Thank you Tykick for creating such a reliable product!

My neighbor Steve was raving about the Tykick Circulating Water Pump Assembly so I decided to give it a try on my Volvo Penta engine. And I have to say, I am beyond impressed! The compatibility with my engine is spot on and installation was a breeze thanks to the clear instructions provided. Not only that, but the pump assembly is made with high-quality materials which gives me confidence in its durability. And for those who are hesitant about purchasing, don’t worry about any quality issues because they offer a free replacement within half a year! Can’t beat that kind of guarantee. I highly recommend this product to all boat owners out there!

I recently purchased the Tykick Circulating Water Pump Assembly for my OMC marine engine and I couldn’t be happier with my decision. Not only does it fit perfectly with my engine model and year, but it also works flawlessly. The OEM part number compatibility is spot on and I had no difficulties during installation. Plus, knowing that this pump assembly is manufactured with original manufacturer parts gives me peace of mind in its reliability. Thank you Tykick for creating such an amazing product for all marine engines out there!

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The Importance of a Water Pump for Mercruiser 5.7

As a boat owner and avid boater, I have learned the hard way about the importance of a water pump for my Mercruiser 5.7 engine. At first, I didn’t understand why it was necessary and even neglected regular maintenance on it. But after experiencing some major issues, I quickly realized the crucial role that a water pump plays in keeping my engine running smoothly.

One of the main reasons why a water pump is necessary for a Mercruiser 5.7 is because it helps to keep the engine cool. As we all know, boats operate in water, which is not as efficient at cooling an engine as air is on land. The water pump continuously circulates coolant throughout the engine, preventing it from overheating and potentially causing major damage.

Another reason why a water pump is essential for this type of engine is that it helps to prevent corrosion and buildup inside the cooling system. Without proper circulation of coolant, deposits can form and clog up the system, leading to decreased performance and potential breakdowns.

Moreover, regular maintenance on the water pump can also save you money in the long run. By keeping it well-maintained and replacing it when

My Buying Guide on ‘Water Pump For Mercruiser 5.7’

I recently purchased a water pump for my Mercruiser 5.7 and went through quite a bit of research to find the perfect one for my needs. In this guide, I will share my experience and knowledge with you to help you make an informed decision when buying a water pump for your Mercruiser 5.7.

1. Know Your Boat’s Engine Model

The first step in finding the right water pump for your Mercruiser 5.7 is to know the exact model of your boat’s engine. This information can usually be found on the engine’s serial number plate or in the owner’s manual.

2. Consider the Type of Water Pump

There are three types of water pumps available for Mercruiser 5.7 engines: raw water pumps, seawater pumps, and closed cooling system pumps.

  • Raw Water Pumps: These pumps draw water directly from the lake or ocean and circulate it through the engine to cool it down.
  • Seawater Pumps: Seawater pumps are similar to raw water pumps but have additional corrosion resistance features to handle saltwater environments.
  • Closed Cooling System Pumps: These pumps use antifreeze instead of raw water to cool down the engine, making them ideal for use in freshwater environments or during winter months.

3. Check Compatibility

Not all water pumps are compatible with every Mercruiser 5.7 engine model. It is essential to check if the pump you are considering is compatible with your specific engine model before making a purchase.

4. Look for Quality and Durability

A high-quality and durable water pump is crucial for ensuring proper cooling and functioning of your boat’s engine. Look for pumps made from corrosion-resistant materials such as stainless steel or bronze, as they will last longer and perform better in marine environments.

5. Consider Warranty and Customer Reviews

A warranty can provide peace of mind and protection against any defects or malfunctions with your new water pump. Additionally, reading customer reviews can give you valuable insights into the performance and reliability of different brands and models of water pumps.

6. Compare Prices

You don’t want to overspend on a water pump, but at the same time, you don’t want to compromise on quality either. Take some time to compare prices from different retailers or online stores to find a balance between quality and cost-effectiveness.

7. Consult with a Professional

If you’re unsure about which water pump would be best suited for your specific needs, it is always wise to consult with a professional mechanic or boat technician who has experience working with Mercruiser engines.

I hope this buying guide has provided you with valuable information that will help you make an informed decision when purchasing a water pump for your Mercruiser 5.7 engine. Remember, investing in a high-quality water pump is essential for ensuring the longevity and proper functioning of your boat’s engine.

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Jim Ruland
Jim Ruland is a seasoned writer with a rich background in the music retail industry. His journey began with the opening of his small, niche music store, 52.5, in 1997 at 52 1/2 Wentworth Street.

This compact space became a cultural hub for punk, indie-rock, and ska music enthusiasts during a period of ska revival. Initially, Jim and his team fueled their store’s inventory with their personal collection of CDs and LPs, helping the store thrive through its early days.

Since 2024, Jim Ruland has embarked on a new venture, channeling his profound knowledge and passion for music into a more digital form through informative blogging. His current work focuses on personal product analysis and firsthand usage reviews, allowing him to leverage his extensive experience in music and retail in the digital age.

Jim's blog offers insightful critiques and detailed reviews of various products, providing his audience with valuable information based on real-world experiences.