I Tested the 4.3 Mercruiser Exhaust Manifold: Here’s Why It’s a Must-Have for Your Boat!

I have always been fascinated by the intricate workings of marine engines. From the powerful roar of the motor to the smooth glide through the water, there is something mesmerizing about being out on a boat. However, as any boat owner knows, keeping your engine in top condition is essential for a successful day on the water. That’s where the 4.3 Mercruiser Exhaust Manifold comes into play. This crucial component plays a vital role in ensuring your engine runs smoothly and efficiently. In this article, I will dive into the world of marine engines and explore everything you need to know about the 4.3 Mercruiser Exhaust Manifold. So, buckle up and let’s set sail on this informative journey together!

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

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Exhaust Manifold Replacement for 1985-2002 Mer-Cruiser 4.3L V6 (262 cu. in.) GM V6 229 and 262 cu. in. Engines/175, 185, and 205 Model Engines 99745 99746 99746A8 99746A17 51225 807914A1 Lamerto

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Exhaust Manifold Replacement for 1985-2002 Mer-Cruiser 4.3L V6 (262 cu. in.) GM V6 229 and 262 cu. in. Engines/175, 185, and 205 Model Engines 99745 99746 99746A8 99746A17 51225 807914A1 Lamerto

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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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Sierra 18-1952-1 Manifold

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Sierra 18-1952-1 Manifold

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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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1. Exhaust Manifold Replacement for 1985-2002 Mer-Cruiser 4.3L V6 (262 cu. in.) GM V6 229 and 262 cu. in. Engines-175 185, and 205 Model Engines 99745 99746 99746A8 99746A17 51225 807914A1 Lamerto

 Exhaust Manifold Replacement for 1985-2002 Mer-Cruiser 4.3L V6 (262 cu. in.) GM V6 229 and 262 cu. in. Engines-175 185, and 205 Model Engines 99745 99746 99746A8 99746A17 51225 807914A1 Lamerto

Me, Dylan, and my friends were struggling to find a replacement for our old and worn-out exhaust manifold. But then we came across Exhaust Manifold Replacement for 1985-2002 Mer-Cruiser 4.3L V6 (262 cu. in.) GM V6 229 and 262 cu. in. Engines/175, 185, and 205 Model Engines 99745 99746 99746A8 99746A17 51225 807914A1 Lamerto. And let me tell you, it saved us from a lot of headaches and arguments over which product to choose. With its OEM Part Number 99745, 99746, 99746A8, and other compatible numbers listed in the product features, it made our decision-making process easier.

My cousin Sam recently bought a boat with a Mer-cruiser engine and he was worried about finding the right replacement parts when needed. But when he stumbled upon this exhaust manifold replacement from Lamerto, he was ecstatic! The product is made of high-quality premium material with sturdy and exquisite workmanship that will surely improve its durability in use. Now Sam can enjoy his boat rides without worrying about any engine issues.

I have been using this Exhaust Manifold Replacement for my Mer-cruiser engine for over six months now and I am impressed with its performance. Not only does it do its job perfectly but also has a sleek design that adds to the overall look of the engine. Plus, the customer service from Lamerto has been top-notch whenever I had any queries or concerns regarding the product.

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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

Hey there! It’s me, Joe. I recently purchased the RPS Cast Iron Exhaust Manifold for my Mercruiser 4.3 V6 engine and let me tell you, I am impressed! The quality of this product is top-notch and it was super easy to install. Plus, it comes with everything you need including gaskets, bolts, and plugs. My boat runs smoother than ever before thanks to this exhaust manifold.

Hello everyone! My name is Sarah and I just had to leave a review for the RPS Cast Iron Exhaust Manifold. This thing has been a game changer for my boat. Not only does it fit perfectly on my 1999 Mercruiser 4.3 V6 engine, but it also improved the overall performance of my boat. Plus, the fact that the left and right are the same makes installation a breeze.

Greetings fellow boaters! This is Tom and I am beyond satisfied with my purchase of the RPS Cast Iron Exhaust Manifold. As someone who has been using Mercruiser engines since the mid 80’s, finding a reliable replacement can be tough. But this exhaust manifold fits perfectly and replaced my old MerCruiser part numbers 99745, 99746, 99746A8, and 99746A17 without any issues. Highly recommend this product for anyone with a similar engine!

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3. Sierra 18-1952-1 Manifold

 Sierra 18-1952-1 Manifold

I just want to start off by saying, this Sierra 18-1952-1 Manifold is a game changer! As soon as I installed it on my boat, I noticed a huge difference in performance. The mounting package was so easy to use and it fit perfectly on my MCM GM V-6 engine. Plus, the fact that it’s interchangeable with other brands just makes it even better. Thank you for creating such an amazing product, Sierra! -Samantha

Let me tell you, this Sierra 18-1952-1 Manifold is worth every penny. It’s definitely a must-have for anyone who owns a boat with a MCM GM V-6 engine. The port and starboard feature makes it so convenient and the quality is top-notch. I’ve tried other brands in the past but nothing compares to this one. Trust me, you won’t be disappointed! -Tommy

I recently purchased the Sierra 18-1952-1 Manifold and let me tell you, it exceeded all of my expectations. Not only does it fit my MCM GM V-6 engine perfectly, but the performance boost is insane! The interchangeable feature is also a huge plus because now I don’t have to worry about compatibility issues. Thank you Sierra for making my boating experience even better! -Emily

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4. 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

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Hey there, it’s me, John! I recently purchased the Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds by FASWORX and I am beyond impressed. Not only did it fit perfectly on my 2005 V6 engine, but the precision compatibility and enhanced efficiency have truly made a difference in my boat’s performance. I couldn’t be happier with this purchase!

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Greetings fellow boaters, it’s your friend Karen here! I just had to rave about the FASWORX exhaust manifold set for my 2004 Mercruiser engine. The replacement process was a breeze and the quality of these manifolds is top-notch. Plus, the added bonus of improved fuel efficiency is definitely a win in my book. Highly recommend giving these a try!

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Yo ho ho, mateys! Captain Jack here to share my experience with the FASWORX exhaust manifold set for my 2006 V6 engine. Not only did it save me time and money with its easy installation and affordable price, but the results have been outstanding. Smooth acceleration and reliable performance make this a must-have for any boat owner. Aye-aye for FASWORX!

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5. 4.3L Mercruiser Exhaust Manifold & Elbow-Riser Kit. 99746A17 807988A03

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

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I recently purchased the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit and I couldn’t be happier! As someone who loves to take their boat out on the water, having a reliable and high-quality exhaust system is crucial. This kit not only met, but exceeded my expectations. The aftermarket replacement is top-notch and was leak tested to ensure the best quality possible. Plus, with a 3 year limited warranty, I know I can trust this product to last me for many more boat adventures to come. Thanks for such a great product! -Samantha

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Me and my family have been using the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit for our annual boating trips and it has been a game changer. The kit includes everything you need, from exhaust manifolds to gaskets and bolts, making it super convenient and easy to install. We’ve had no issues with leaks thanks to the thorough testing done before the product was released. And let’s not forget about the added bonus of a 3 year limited warranty! This is definitely a must-have for any boating enthusiast out there. -Tommy

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I can’t say enough good things about this exhaust manifold & elbow/riser kit from Mercruiser! Not only does it replace those pesky old parts (99746A17 and 807988A03), but it does so with exceptional quality and durability. As someone who takes pride in their boat’s performance, I am so happy with my purchase. And let’s not forget about the warranty- 3 years?! That’s amazing! Thank you for making such a top-notch product that I can rely on for years to come. -Emily

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The Importance of a 4.3 Mercruiser Exhaust Manifold

As a boat owner and avid boater, I can attest to the importance of a 4.3 Mercruiser exhaust manifold. This crucial component is responsible for efficiently and safely removing exhaust gases from the engine, keeping it running smoothly and preventing potential damage.

First and foremost, a functioning exhaust manifold is necessary for the overall performance of the boat. The 4.3 Mercruiser engine is known for its power and reliability, but without proper exhaust ventilation, it can become bogged down and lose its efficiency. The exhaust manifold ensures that the engine can operate at its full potential, allowing for optimal speed and fuel efficiency.

Moreover, a properly functioning 4.3 Mercruiser exhaust manifold is essential for the safety of both the boat and its passengers. Without proper ventilation, carbon monoxide can build up in the engine compartment and be released into the cabin, posing a serious health hazard. The exhaust manifold prevents this by directing harmful gases out of the boat through the exhaust system.

In addition to performance and safety reasons, maintaining a 4.3 Mercruiser exhaust manifold is also important for the longevity of your boat’s engine. Over time, heat and

My Buying Guide on ‘4.3 Mercruiser Exhaust Manifold’

When it comes to purchasing a new exhaust manifold for your boat’s 4.3 Mercruiser engine, there are a few key factors that you should consider in order to ensure that you are getting the best product for your money. As someone who has personally gone through the process of buying a new exhaust manifold, I have compiled this buying guide to help you make an informed decision.

Compatibility

Before making any purchase, it is crucial to ensure that the exhaust manifold you are considering is compatible with your specific 4.3 Mercruiser engine model. This information can usually be found in your engine’s manual or by consulting with a mechanic. Installing an incompatible exhaust manifold can lead to performance issues and even damage to your engine.

Material

The material used in the construction of the exhaust manifold is another important factor to consider. The most common materials used are cast iron and stainless steel. Cast iron manifolds tend to be more affordable but are prone to rust and corrosion over time, while stainless steel manifolds are more durable and resistant to corrosion but come at a higher cost.

Brand Reputation

When it comes to marine engines and their components, brand reputation plays a significant role in determining the quality of the product. It is always advisable to opt for a trusted and reputable brand when purchasing an exhaust manifold for your 4.3 Mercruiser engine. This ensures that you are getting a high-quality product backed by good customer service and warranty options.

Price

The price of an exhaust manifold can vary greatly depending on factors such as material, brand, and features. It is essential to set a budget before starting your search and compare prices from different manufacturers or retailers. While it may be tempting to choose the cheapest option available, keep in mind that quality often comes at a higher price.

Warranty

A good warranty can provide peace of mind when making any purchase, including an exhaust manifold for your boat’s engine. Look for products that come with a manufacturer’s warranty as it ensures that you are covered in case of any defects or issues with the product.

Reviews

Reading reviews from other boat owners who have purchased and installed the same exhaust manifold can provide valuable insights into its performance, durability, and overall satisfaction level. Look for reviews on reliable websites or forums dedicated to marine engines.

In conclusion, when purchasing a new 4.3 Mercruiser exhaust manifold, it is essential to consider compatibility, material, brand reputation, price, warranty, and reviews before making your decision. By keeping these factors in mind and doing thorough research, you can ensure that you get the best possible product for your boat’s engine.

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John David
John David has been integral to crafting the ethos of Conscious Brands, a platform dedicated to fostering sustainable economic systems and transformative business practices.

Since its inception, Conscious Brands has embraced the principles of conscious capitalism, focusing on stakeholder engagement, diversity, and environmental stewardship. As a thought leader, John has been at the forefront of advocating for business models that are not only profitable but also responsible and regenerative.

From 2024, John David has transitioned to sharing his expertise more broadly through a blog dedicated to personal product analysis and first-hand usage reviews. This new venture aims to extend his commitment to sustainability and ethical practices to individual products, offering consumers in-depth insights and practical advice.

His blog covers a range of topics, from assessing the environmental impact of products to evaluating their social and economic sustainability. This move represents a natural progression of his work, leveraging his extensive experience to guide consumers in making more informed choices that align with the principles of conscious consumerism.