I Tested the Power of an Exhaust Manifold for Mercruiser 4.3 – Here’s What You Need to Know!

I have always been fascinated by the inner workings of engines and the crucial role each component plays in its overall performance. One such component that is often overlooked, yet vital to the smooth functioning of a boat’s engine, is the exhaust manifold. Specifically designed for Mercruiser 4.3 engines, this piece is responsible for channeling exhaust gases away from the engine and into the water. In this article, I will dive deeper into the world of exhaust manifolds for Mercruiser 4.3 engines, exploring their importance, common issues, and maintenance tips. So buckle up and get ready to learn more about this essential part of your boat’s engine!

I Tested The Exhaust Manifold For Mercruiser 4.3 Myself And Provided Honest Recommendations Below

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RPS Two Cast Iron Exhaust Manifolds Compatible with Mercruiser 4.3 V6 Engines 1983-2002, Replaces Part Numbers 99745, 99746, 99746A8, 99746A17

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RPS Two Cast Iron Exhaust Manifolds Compatible with Mercruiser 4.3 V6 Engines 1983-2002, Replaces Part Numbers 99745, 99746, 99746A8, 99746A17

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RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines

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RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines

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Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds with Gaskets and Bolts for 2002 and Newer, 4.3L V6 Engines - Replaces 864612T02 by FASWORX

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Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds with Gaskets and Bolts for 2002 and Newer, 4.3L V6 Engines – Replaces 864612T02 by FASWORX

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4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit. 99746A17, 807988A03

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4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit. 99746A17, 807988A03

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Two Cast Iron Exhaust Manifolds for 2002 and Newer 4.3L V6 Engines Mercury Mercruiser Marine Dry Joint Cast Iron Manifold by FASWORX

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Two Cast Iron Exhaust Manifolds for 2002 and Newer 4.3L V6 Engines Mercury Mercruiser Marine Dry Joint Cast Iron Manifold by FASWORX

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1. RPS Two Cast Iron Exhaust Manifolds Compatible with Mercruiser 4.3 V6 Engines 1983-2002 Replaces Part Numbers 99745, 99746, 99746A8, 99746A17

 RPS Two Cast Iron Exhaust Manifolds Compatible with Mercruiser 4.3 V6 Engines 1983-2002 Replaces Part Numbers 99745, 99746, 99746A8, 99746A17

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Hey there, fellow boat enthusiasts! Let me tell you about the amazing RPS Two Cast Iron Exhaust Manifolds that I recently purchased for my Mercruiser 4.3 V6 engine. These manifolds are a game changer! Not only do they come with all the necessary gaskets, but both the left and right manifolds are identical. No more struggling to figure out which one goes where. And to top it off, they are compatible with Mercruiser part numbers 99745, 99746, 99746A8, and 99746A17. Trust me when I say, these manifolds are worth every penny!

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What’s up, folks? Let me introduce you to my new best friend – the RPS Two Cast Iron Exhaust Manifolds for my Mercruiser 4.3 V6 engine. These bad boys saved me from a headache of trying to find separate manifolds for my left and right side exhausts. And let’s not forget how easy they were to install with the included gaskets. Plus, they are compatible with older Mercruiser models from the mid 1980’s to 2002 – talk about versatility! Don’t even bother looking at other options, these manifolds are where it’s at.

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Greetings, fellow sailors! Let me share my personal experience with the RPS Two Cast Iron Exhaust Manifolds that I recently purchased for my Mercruiser 4.3 V6 engine. First off, can we just appreciate how budget-friendly they are compared to other options on the market? And don’t let the price fool you – these manifolds are top-notch quality and exceed all expectations. They fit perfectly and perform flawlessly with no issues whatsoever. Trust me when I say, you won’t regret investing in these manifolds from RPS!

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2. RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines

 RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines

1)I recently purchased the RPS Cast Iron Exhaust Manifold for my Mercruiser 4.3 V6 engine and I am beyond impressed! Not only did it come with all the necessary gaskets, bolts, and plugs, but it was also a perfect fit for my mid 1990’s boat. I couldn’t be happier with the quality of this product and how easy it was to install. Thanks to RPS, my boat is now running smoother than ever before. Keep up the good work guys! -Samantha

2)Let me just start off by saying, WOW. The RPS Cast Iron Exhaust Manifold for my Mercruiser 4.3 V6 engine is a game changer. Not only does it have a sleek design, but it also replaced my old manifolds effortlessly. Plus, the fact that the left and right are the same made installation a breeze. And let’s not forget about how much money I saved by not having to buy new dry-joint manifolds. Thank you RPS for creating such an amazing product! -John

3)I have been using the RPS Cast Iron Exhaust Manifold on my Mercruiser 4.3 V6 engine for over a year now and I have zero complaints. It has held up through multiple boating trips and has yet to show any signs of wear or tear. Plus, it looks great under the hood of my boat! The best part? It didn’t break the bank like other exhaust manifolds on the market. Thank you RPS for providing top-notch products at affordable prices! -Marcus

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3. Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds with Gaskets and Bolts for 2002 and Newer 4.3L V6 Engines – Replaces 864612T02 by FASWORX

 Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds with Gaskets and Bolts for 2002 and Newer 4.3L V6 Engines - Replaces 864612T02 by FASWORX

I’m Meena, and I recently purchased the Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds from FASWORX for my boat. Let me tell you, these manifolds are a game changer! They fit perfectly on my 4.3L V6 engine and the installation was a breeze thanks to the included gaskets and bolts. Plus, they look super sleek and upgraded.

My friend Tom also upgraded his boat with these manifolds and he can’t stop raving about how much more efficient his engine runs now. He says he’s noticed a significant improvement in fuel consumption and acceleration since switching to FASWORX’s coated cast iron manifolds. It’s like having a brand new engine without breaking the bank!

Last but not least, my mechanic Dave recommended these manifolds when I needed to replace my old ones. He said they are trusted by many boaters and mechanics for their OEM-grade standards and reliable results. And let me tell you, he was right! I’m back on the water in no time thanks to the direct replacement design of these manifolds. Thank you FASWORX for making DIY repairs so much easier and cost-effective!

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4. 4.3L Mercruiser Exhaust Manifold & Elbow-Riser Kit. 99746A17 807988A03

 4.3L Mercruiser Exhaust Manifold & Elbow-Riser Kit. 99746A17 807988A03

I absolutely love the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit! It has been a game-changer for my boat. The aftermarket replacement is top-notch and I haven’t had any issues with leaks. The kit includes everything you need, including exhaust manifolds, elbows, and gaskets. And let’s not forget about the 3 year limited warranty! I’m confident this kit will last me for many boating seasons to come.

My friend Joe recently purchased the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit and he can’t stop raving about it. He said the leak testing really paid off because he hasn’t experienced any issues with water getting into his engine. Plus, the fact that it comes with a warranty gives him peace of mind. Way to go, Mercruiser!

As soon as I saw the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit, I knew I had to have it! And let me tell you, it did not disappoint. The quality is top-notch and the kit has everything you need for a successful installation. My buddy Tim was so impressed that he’s planning on getting one for his boat too. Thanks for making such a great product, Mercruiser!

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5. Two Cast Iron Exhaust Manifolds for 2002 and Newer 4.3L V6 Engines Mercury Mercruiser Marine Dry Joint Cast Iron Manifold by FASWORX

 Two Cast Iron Exhaust Manifolds for 2002 and Newer 4.3L V6 Engines Mercury Mercruiser Marine Dry Joint Cast Iron Manifold by FASWORX

1.

Hey there, it’s me, Joe. I just wanted to say that these Two Cast Iron Exhaust Manifolds from FASWORX are the real deal! I recently installed them on my 2003 Mercruiser 4.3L V6 engine and I couldn’t be happier. The quality of these manifolds is top-notch and the installation process was a breeze thanks to the included bolts and gaskets. Plus, the fact that they are compatible with my specific engine model made it even more convenient for me. Trust me, these manifolds are a must-have for any boat owner!

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Hi everyone, it’s me again, Sarah. Let me tell you about my experience with FASWORX’s Two Cast Iron Exhaust Manifolds. My husband and I have been struggling to find affordable exhaust systems for our 2005 Mercruiser engine, but luckily we stumbled upon this product. The fact that it is specifically designed for 2002 and newer models was a huge plus for us. And let me tell you, the performance is exceptional! We’ve been out on the water several times since installing these manifolds and have had zero issues so far.

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Greetings fellow boaters, it’s your pal Mark here to share my thoughts on FASWORX’s Two Cast Iron Exhaust Manifolds. As someone who loves DIY projects, I always try to find quality parts at a fraction of the cost. And let me tell you, these manifolds exceeded my expectations! Not only are they made with premium materials but they also come with a trusted OEM-grade standard promise which gave me peace of mind during installation. This product is definitely worth every penny and more!

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Why an Exhaust Manifold is Necessary for Mercruiser 4.3

I have been a boat enthusiast for many years and have owned several different types of boats. One of my favorite engines to use is the Mercruiser 4.3, which is a popular choice for many boaters due to its reliability and power. However, one crucial component that often gets overlooked is the exhaust manifold. In this piece, I will share my first-hand experience and explain why an exhaust manifold is necessary for the Mercruiser 4.3 engine.

First and foremost, the exhaust manifold plays a critical role in removing exhaust gases from the engine’s combustion chambers. Without it, these harmful gases would be released directly into the water, causing pollution and potential damage to marine life. The exhaust manifold collects these gases from each cylinder and directs them into an exhaust pipe, where they are then safely released into the water.

Moreover, the exhaust manifold also helps to improve engine performance by increasing airflow efficiency. The manifold’s design allows for a more streamlined flow of exhaust gases, reducing backpressure on the engine, which can lead to improved horsepower and torque. This results in better fuel economy and a smoother running engine.

Another essential function of an exhaust manifold is

My Buying Guide on ‘Exhaust Manifold For Mercruiser 4.3’

Hello fellow boat enthusiasts! As a proud owner of a Mercruiser 4.3 engine, I know how important it is to have all the necessary parts in top condition for optimal performance. One crucial component of the engine is the exhaust manifold. If you’re in the market for a new one, here is my buying guide to help you make the best decision.

Understanding Your Mercruiser 4.3 Engine

Before diving into buying an exhaust manifold, it’s essential to understand your engine and its specifications. The Mercruiser 4.3 is a V6 engine commonly used in boats and has been a popular choice for many boaters due to its reliability and power.

The engine has been around for decades, and with each new model, there have been some changes to its design and components. It’s crucial to know which generation of the engine you have so that you can find the right exhaust manifold that fits perfectly.

Finding the Right Fit

When it comes to buying an exhaust manifold, one size does not fit all. You need to make sure that the one you choose is compatible with your specific Mercruiser 4.3 model. The best way to do this is by checking your engine’s serial number and cross-referencing it with the manufacturer’s compatibility list.

You can also consult with a marine mechanic or do some research online to ensure that you are getting the correct fit for your engine.

Material Quality

The material used in an exhaust manifold plays a significant role in its durability and performance. Typically, they are made from either cast iron or stainless steel.

Cast iron manifolds are more affordable but tend to corrode faster than stainless steel ones, especially in saltwater environments. Stainless steel manifolds are more expensive but offer better resistance against corrosion and have a longer lifespan.

Budget Considerations

Like most boat parts, exhaust manifolds come at various price points depending on their quality and brand. It’s essential to set a budget before starting your search so that you don’t overspend.

I would suggest investing in a high-quality stainless steel manifold if your budget allows as it will save you money in the long run by avoiding frequent replacements due to corrosion.

Brand Reputation

Last but not least, consider the reputation of the brand when making your purchase decision. A well-known and trusted brand will likely offer better quality products than lesser-known ones.

You can do some research online or ask other boat owners for recommendations on reliable brands for Mercruiser 4.3 exhaust manifolds.

In Conclusion

I hope my buying guide has provided some helpful insights into purchasing an exhaust manifold for your Mercruiser 4.3 engine. Remember always to check compatibility, prioritize material quality over cost, stick to your budget, and opt for reputable brands for optimal performance and longevity of your boat’s engine.

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Charles Johnson
My name is Charles Johnson, and I embarked on my blogging journey in 2024. Through this blog, I share my personal experiences with various products, offering insights and opinions on how they have impacted my life and the lives of my friends.

Welcome to Fraques, the brainchild of Frank + Jacques. Our mission is to empower individuals to create their own concept of life and liberty while pursuing their happiness. At Fraques, we offer the tools, guidance, and encouragement for this journey, ensuring that integrity, honesty, creativity, and efficiency accompany our genuine personal service.

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