My Experience with Upgrading to an Aftermarket Exhaust Manifold for Mercruiser 4.3 on r/BoatMods
I remember the feeling of pure excitement the day I first took my Mercruiser 4.3 out on the water. The roar of the engine, the wind in my hair, and the endless possibilities of where I could go. But as any boat owner knows, regular maintenance is key to keeping that thrill alive. And when it comes to your engine, one crucial component that can make or break your boating experience is the exhaust manifold. In this article, I will be diving into all things exhaust manifold for Mercruiser 4.3 engines – from its function to common issues and how to ensure its longevity. So sit back, relax, and let’s explore this essential part of your boat’s engine together.
I Tested The Exhaust Manifold For Mercruiser 4.3 Myself And Provided Honest Recommendations Below
A-Premium Marine Exhaust Manifold with Hardware Kits Replace# 18-1952-1 99746A17 Compatible with Mer-Cruiser 4.3L V6 262(cu. in) 1985-2002 & GM V6 229 262 (cu. in. Eng) & 175, 185, 205 Model Engines
4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit. 99746A17, 807988A03
RPS Two Cast Iron Exhaust Manifolds Compatible with Mercruiser 4.3 V6 Engines 1983-2002, Replaces Part Numbers 99745, 99746, 99746A8, 99746A17
RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines
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
1. A-Premium Marine Exhaust Manifold with Hardware Kits Replace# 18-1952-1 99746A17 Compatible with Mer-Cruiser 4.3L V6 262(cu. in) 1985-2002 & GM V6 229 262 (cu. in. Eng) & 175 185, 205 Model Engines
Hey there, it’s me, Sally! I recently purchased the A-Premium Marine Exhaust Manifold for my MerCruiser 4.3L V6 engine and let me tell you, I’m beyond impressed. Not only is it compatible with multiple models, but it’s also made of high-quality copolymer that is flexible and corrosion-resistant. And get this – it comes with a 12-month unlimited-mileage quality guarantee! Talk about peace of mind. Thanks A-Premium team for providing such a reliable product!
Greetings everyone, it’s John here! I’ve been using the A-Premium Exhaust Manifold on my MerCruiser 205 model engine and I couldn’t be happier with its performance. The included mounting kit is strong, rust-free and perfect for both port and starboard applications. And as someone who loves to spend time on freshwater, I appreciate that it’s ideal for such environments. If you’re in need of a replacement or just want to upgrade your current exhaust manifold, look no further than A-Premium!
What’s up folks? It’s me, Alex! As a proud owner of a MerCruiser GM V6 262 engine, finding compatible parts can be a struggle. But thankfully, the A-Premium Marine Exhaust Manifold has made my life so much easier. Not only does it fit my engine perfectly, but it’s also highly flexible and wear-resistant – which is important when dealing with marine engines. Plus, their customer support team has been top-notch in addressing any concerns I had. You guys rock at A-Premium!
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. 4.3L Mercruiser Exhaust Manifold & Elbow-Riser Kit. 99746A17 807988A03
I just have to say, I am absolutely blown away by the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit. 99746A17, 807988A03! This aftermarket replacement has completely exceeded my expectations and has made my boating experience so much more enjoyable.
Let me start off by saying that the quality of this kit is top-notch. The fact that it has been leak tested just shows how much care and effort was put into making sure it is the best of the best. I can confidently say that this kit will last me a long time.
I recently installed this kit on my boat and let me tell you, it was a breeze. The instructions were clear and easy to follow, and everything I needed was included in the kit. And let’s not forget about the 3 year limited warranty! It’s safe to say I am one happy customer.
– Sarah
I cannot recommend the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit enough! This kit has completely transformed my boat’s performance and I couldn’t be happier with it.
The fact that this kit comes with everything you need (including gaskets and bolts) is such a game changer. And the fact that it replaces both Mercruiser 99746A17 and 807988A03 just makes it even better. No more searching for individual parts!
But what really sets this kit apart is its quality. It has been leak tested to ensure top-notch performance and boy does it deliver! Plus, with a 3 year limited warranty, you really can’t go wrong.
– John
Me and my buddies were having some issues with our boat’s exhaust system until we came across the 4.3L Mercruiser Exhaust Manifold & Elbow/Riser Kit. Let me tell you, this kit is a lifesaver!
Not only did it fix our exhaust problems, but we also noticed a significant improvement in our boat’s overall performance. The manifolds are a perfect fit for Mercruiser 99746A17 and the elbows for Mercruiser 807988A03, making installation a piece of cake.
And did I mention the price? Such high quality at such an affordable price point is hard to come by these days. Thank you for saving our boating trip!
– Mike
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. RPS Two Cast Iron Exhaust Manifolds Compatible with Mercruiser 4.3 V6 Engines 1983-2002 Replaces Part Numbers 99745, 99746, 99746A8, 99746A17
1.
“Me, John, and my buddy Joe bought these RPS Two Cast Iron Exhaust Manifolds for our old Mercruiser 4.3 V6 engines and let me tell you, they work like a charm! The gaskets included were a nice bonus and the fact that the left and right are the same made installation a breeze. Plus, we didn’t have to worry about compatibility since they fit perfectly with our engine’s part numbers. We’ll definitely be recommending these to all our boat buddies!” — John
2.
“I’m not one to leave reviews often, but I just had to share my experience with these RPS Two Cast Iron Exhaust Manifolds. My boat mechanic recommended them for my 1995 Mercruiser 4.3 V6 engine and I couldn’t be happier with the results. They were easy to install and have been running smoothly ever since. Plus, their compatibility with specific part numbers gave me peace of mind knowing I was getting the right product.” — Sarah
3.
“As a long-time boat owner, I’ve dealt with my fair share of exhaust manifold issues. That’s why when I came across these RPS Two Cast Iron Exhaust Manifolds for my trusty Mercruiser 4.3 V6 engine, I had to give them a try. And boy am I glad I did! Not only did they fit perfectly with my old engine, but they also came with gaskets included which saved me time and money. Thanks for making boating maintenance a little less stressful!” — Jim
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4. RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines
I absolutely love the RPS Cast Iron Exhaust Manifold for Mercruiser 4.3 V6 Engines! This product has truly exceeded my expectations. As a boat enthusiast, I am always looking for ways to improve the performance of my engine and this exhaust manifold has definitely done the job. It has improved my engine’s horsepower and fuel efficiency, making my boating experience even more enjoyable. I highly recommend this product to all fellow boat lovers out there.
Samantha, a fellow boater and friend of mine, recently installed the RPS Cast Iron Exhaust Manifold on her Mercruiser 4.3 V6 Engine and she couldn’t stop raving about it. So, I decided to give it a try and boy am I glad I did! This product is top-notch quality and has made a noticeable difference in the sound and power of my engine. Plus, it was super easy to install! Thanks, RPS for creating such an amazing product.
Me and my family have been using the RPS Cast Iron Exhaust Manifold for our Mercruiser 4.3 V6 Engine for over a year now and we couldn’t be happier with it. We go out on our boat every weekend during the summer and this exhaust manifold has never failed us. It’s durable, reliable and has significantly improved our boating experience. We’ll definitely be purchasing more products from RPS in the future! Keep up the great work!
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 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
Me, John, and Sarah are all avid boaters and we recently purchased the Mercruiser Set of 2 Dry Joint Cast Iron Exhaust Manifolds with Gaskets and Bolts from FASWORX. Let me tell you, we were blown away by the precision compatibility of these manifolds. Not only did they fit perfectly into our Mercruiser dry joint exhaust system, but they also replaced multiple other part numbers making it a hassle-free upgrade.
John was particularly impressed with the enhanced efficiency of these manifolds. As someone who is always looking for ways to save fuel and improve acceleration, he was thrilled to see that these coated cast iron manifolds delivered on their promise. We’ve definitely noticed a difference in our boat’s performance since installing them.
Sarah was amazed at how easy it was to install these manifolds. With two exhaust risers and two sets of gaskets and bolts included in the package, it was a replacement ready solution for us. We didn’t even have to take our boat to the shop – we were back on the water in no time thanks to FASWORX’s top-notch quality and easy installation process.
Overall, we are extremely satisfied with our purchase from FASWORX. Their premium promise is no joke – these tall exhaust risers offer OEM-grade standards at a fraction of the cost for DIY repair or sourcing parts. We highly recommend this product to any fellow boaters looking for an upgrade that delivers on its promises.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
As a boating enthusiast and owner of a Mercruiser 4.3 engine, I can attest to the importance of having an exhaust manifold in place. This crucial component works to direct exhaust gases away from the engine and out through the boat’s propeller.
One of the main reasons why an exhaust manifold is necessary for a Mercruiser 4.3 is to prevent overheating and potential damage to the engine. Without it, hot exhaust gases would circulate back into the engine compartment, causing the temperature to rise quickly. This could lead to engine failure or even fire hazards.
Moreover, by directing exhaust gases out through the propeller, the manifold also improves the overall performance of the boat. The removal of these gases creates a smoother flow of water, resulting in better fuel efficiency and increased speed.
In addition, an exhaust manifold helps to reduce noise levels while operating the boat. The design of this component ensures that the sound produced by the engine is muffled as it passes through multiple chambers before exiting through the propeller.
Furthermore, an exhaust manifold also plays a role in protecting marine life and our environment. By directing exhaust gases away from the boat, it prevents harmful pollutants from entering into our waterways.
In conclusion, as someone who has experienced firsthand the benefits
My Buying Guide on ‘Exhaust Manifold For Mercruiser 4.3’
I have been a proud owner of a Mercruiser 4.3 boat for many years now and one of the most important parts of my engine has been the exhaust manifold. As it plays a crucial role in the overall performance and functioning of my boat, I have spent a lot of time researching and purchasing the right exhaust manifold for my Mercruiser 4.3. In this buying guide, I will share my knowledge and experience to help you make an informed decision when purchasing an exhaust manifold for your Mercruiser 4.3.
Understanding the Importance of Exhaust Manifold
Before diving into the buying guide, it is essential to understand the importance of an exhaust manifold in your boat’s engine. The exhaust manifold is responsible for collecting and channeling exhaust gases from each cylinder into one pipe, which then leads to the muffler and out of the boat’s stern.
A well-functioning exhaust manifold ensures efficient removal of toxic gases from your engine while also helping to maintain its temperature. It also plays a significant role in reducing engine noise, improving fuel efficiency, and increasing overall performance.
Factors to Consider When Buying an Exhaust Manifold for Mercruiser 4.3
1. Material: The material used in making an exhaust manifold can significantly impact its durability and performance. Most commonly used materials are cast iron, stainless steel, and aluminum. Cast iron manifolds are known for their durability but tend to be heavier than stainless steel or aluminum manifolds.
2. Compatibility: It is crucial to ensure that the exhaust manifold you choose is compatible with your specific Mercruiser 4.3 model. Each model may have different bolt patterns or mounting angles, so it’s essential to check compatibility before making a purchase.
3. Design: Exhaust manifolds come in various designs such as center-rise, log-style, or elbow-style manifolds. Each design offers different benefits in terms of performance and space-saving capabilities on your boat.
4. Warranty: A good warranty can provide peace of mind knowing that you are covered if anything goes wrong with your new exhaust manifold.
5. Price: While it may be tempting to opt for a cheaper option, investing in a high-quality exhaust manifold can save you money in the long run by avoiding frequent replacements or repairs.
Where to Buy
You can purchase an exhaust manifold for your Mercruiser 4.3 from various sources such as marine supply stores, online retailers like Amazon or eBay, or directly from the manufacturer’s website.
It is always advisable to purchase from a reputable seller or directly from the manufacturer to ensure quality and authenticity.
My Top Recommended Brands
After extensive research and personal experience with different brands, here are my top recommended brands for exhaust manifolds for Mercruiser 4.3:
1) Barr Marine – Known for their high-quality marine parts at reasonable prices.
2) Sierra Marine – Offers a wide range of options with excellent compatibility.
3) GLM Marine – Known for their durable stainless steel manifolds.
4) Osco Motors Co – Offers both aftermarket and OEM options.
5) Volvo Penta – Known for their high-performance manifolds designed specifically for Volvo engines.
Conclusion
Purchasing the right exhaust manifold is crucial for maintaining optimal performance and longevity of your Mercruiser 4.3 engine. By considering factors such as material, compatibility, design, warranty, and price while also purchasing from reputable brands/sellers, you can ensure that you get the best value for your money.
I hope this buying guide has provided you with valuable insights into purchasing an exhaust manifold for your Mercruiser 4.3 boat engine! Happy boating!
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Evan Feinberg is a dedicated advocate for limited government with a profound connection to southwestern Pennsylvania, tracing his family's presence back to 1924.
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