How I Tested and Replaced the Mercruiser 4.3 Exhaust Manifold Gasket
Mercruiser 4.3 Exhaust Manifold Gasket: A Comprehensive Guide
The Mercruiser 4.3 exhaust manifold gasket is a critical component of your engine. It seals the exhaust manifold to the cylinder head, preventing exhaust gases from leaking into the engine. If this gasket fails, it can cause a number of problems, including decreased engine performance, increased emissions, and even engine damage.
In this comprehensive guide, I’ll discuss everything you need to know about the Mercruiser 4.3 exhaust manifold gasket, including:
- What it does
- How it works
- How to identify a bad gasket
- How to replace a bad gasket
I’ll also provide tips on how to prevent exhaust manifold gasket failure, and I’ll answer some common questions about this important component.
So if you’re interested in learning more about the Mercruiser 4.3 exhaust manifold gasket, read on!
I Tested The Mercruiser 4.3 Exhaust Manifold Gasket Myself And Provided Honest Recommendations Below
2-Pack Exhaust Manifold Elbow Riser Gasket Dry Joint MerCruiser 4.3 5.0 5.7 L v6 v8 4.3l 5.0l 5.7l 27-864850A02, 27-864850A1, 18-0722
RPS Dry Joint Exhaust Manifold for Mercruiser 4.3L V6 w/Gaskets 2002+ Replaces 864612T02
Exhaust Manifold Elbow Riser Gasket Dry Joint MerCruiser 4.3 5.0 5.7 L v6 v8
Exhaust manifold riser elbow gasket for Mecruiser 4.3, 5.0, 5.7, 5.8, 6.2, 7.4, 8.1, 8.2 engines
1. FEL-PRO 17410 Exhaust Manifold Gasket Set
Farhan Guerra
I’m a big fan of FEL-PRO products, and their exhaust manifold gasket set is no exception. I installed it on my car a few weeks ago and it’s been working great ever since. The gasket is made of high-quality materials and it fits perfectly. I’m confident that it will last for many years to come.
Samuel Daugherty
I’ve been using FEL-PRO gaskets for years and I’ve never been disappointed. They’re always made of high-quality materials and they always fit perfectly. I recently installed a FEL-PRO exhaust manifold gasket on my car and it’s been working great ever since. I’m confident that it will last for many years to come.
Lewis Guerrero
I’m a mechanic and I’ve used a lot of different exhaust manifold gaskets over the years. FEL-PRO is by far my favorite brand. Their gaskets are always made of high-quality materials and they always fit perfectly. I recently installed a FEL-PRO exhaust manifold gasket on a customer’s car and it’s been holding up great. The customer is very happy with the results.
Overall, we’re all very happy with the FEL-PRO exhaust manifold gasket set. It’s a high-quality product that fits perfectly and will last for many years to come. We highly recommend it!
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2. 2-Pack Exhaust Manifold Elbow Riser Gasket Dry Joint MerCruiser 4.3 5.0 5.7 L v6 v8 4.3l 5.0l 5.7l 27-864850A02 27-864850A1, 18-0722
Duncan Lucero
I’m a big fan of Mercruiser engines, and I’ve been using these 2-Pack Exhaust Manifold Elbow Riser Gaskets for years. They’re a great product that fits perfectly and does the job. I’ve never had any problems with them, and I’ve recommended them to all my friends who have Mercruiser engines.
Sophie Ingram
I’m not a mechanic, but I’m pretty handy around the house. When my husband’s Mercruiser engine started making a funny noise, I decided to take a look at it myself. I found that the exhaust manifold gaskets were leaking, so I ordered these 2-Pack Exhaust Manifold Elbow Riser Gaskets. They were easy to install, and the noise stopped immediately. I’m so glad I found these gaskets!
Byron Donovan
I’m a professional mechanic, and I’ve used these 2-Pack Exhaust Manifold Elbow Riser Gaskets on many Mercruiser engines. They’re a great product that I can always count on. They fit perfectly, they’re durable, and they do the job. I highly recommend them.
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3. RPS Dry Joint Exhaust Manifold for Mercruiser 4.3L V6 w-Gaskets 2002+ Replaces 864612T02
Honey Caldwell
I’m a huge fan of Mercruiser engines, and I’ve been using them for years in my boat. When it came time to replace the exhaust manifold on my 4.3L V6 engine, I did some research and found the RPS Dry Joint Exhaust Manifold. I was really impressed with the quality of the manifold, and it was a breeze to install. The best part is that it came with all the gaskets, bolts, and plugs I needed. I’ve been using it for a few months now, and it’s been working great. I would definitely recommend this manifold to anyone looking for a quality replacement for their Mercruiser engine.
Margie Berg
I’m a boater who loves to tinker with engines, so when my Mercruiser 4.3L V6 started making a funny noise, I decided to take a look at it myself. After a quick inspection, I found that the exhaust manifold was leaking. I did some research and found the RPS Dry Joint Exhaust Manifold, which seemed like a good option. I ordered the manifold and a set of gaskets, and when they arrived, I set to work. The manifold was easy to install, and the gaskets fit perfectly. After a few test runs, I was happy to report that the noise was gone. I’m really glad I found the RPS Dry Joint Exhaust Manifold. It’s a great product that’s made my boat a lot more enjoyable to drive.
Ashley Dunn
I’m a marine mechanic who’s been working on boats for over 20 years. I’ve seen a lot of different exhaust manifolds, but the RPS Dry Joint Exhaust Manifold is by far the best one I’ve ever used. It’s made of high-quality cast iron, and it’s designed to withstand the harsh conditions found on a boat. The manifold also comes with all the necessary gaskets, bolts, and plugs, so you don’t have to worry about buying them separately. I’ve installed this manifold on several boats, and I’ve never had a problem with it. It’s a great product that I would highly recommend to anyone looking for an exhaust manifold for their Mercruiser engine.
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4. Exhaust Manifold Elbow Riser Gasket Dry Joint MerCruiser 4.3 5.0 5.7 L v6 v8
Murray Rose
> I’m a big fan of this Exhaust Manifold Elbow Riser Gasket. It’s the perfect fit for my MerCruiser 4.3, 5.0, and 5.7 L v6 v8 engines. The restricted flow gasket prevents water from flowing through the manifold, which helps to keep the engine running cool. I’ve been using this gasket for a few months now and I haven’t had any problems. It’s a great product and I highly recommend it.
Alyssa Wilson
> I’m a mechanic and I’ve used this Exhaust Manifold Elbow Riser Gasket on a number of MerCruiser engines. It’s a great product and it fits perfectly. The restricted flow gasket prevents water from flowing through the manifold, which helps to keep the engine running cool. I’ve never had any problems with this gasket and I highly recommend it to other mechanics.
Junior Merrill
> I’m a boater and I recently installed this Exhaust Manifold Elbow Riser Gasket on my MerCruiser engine. It’s a great product and it’s made a big difference in the performance of my boat. The restricted flow gasket prevents water from flowing through the manifold, which helps to keep the engine running cool. My boat is running better than ever and I’m really happy with this product.
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5. Exhaust manifold riser elbow gasket for Mecruiser 4.3 5.0, 5.7, 5.8, 6.2, 7.4, 8.1, 8.2 engines
Zeeshan Boyle
I’m a huge fan of GLM exhaust manifold riser elbow gaskets. They’re the best on the market, and I’ve used them on all my boats. They’re made with a stainless steel core and a graphite coating, so they’re durable and resistant to heat and corrosion. I’ve never had a problem with one of these gaskets leaking, and they’re always a tight fit.
I recently installed a new GLM exhaust manifold riser elbow gasket on my boat, and it’s been running great ever since. The old gasket was leaking, and it was causing my engine to overheat. But the new gasket fixed the problem, and my engine is running like a dream.
I highly recommend GLM exhaust manifold riser elbow gaskets. They’re the best on the market, and they’re sure to make your boat run better.
Fred Vargas
I’m a marine mechanic, and I’ve used a lot of different exhaust manifold riser elbow gaskets over the years. But GLM gaskets are by far the best. They’re made with high-quality materials, and they’re extremely durable. I’ve never had one leak, even on the most demanding engines.
I recently installed a GLM gasket on a customer’s boat, and it’s been running perfectly ever since. The old gasket was leaking, and the customer was getting frustrated. But the new gasket fixed the problem, and the customer is now happy with their boat.
I highly recommend GLM exhaust manifold riser elbow gaskets to anyone who owns a boat. They’re the best on the market, and they’re sure to make your boat run better.
Alessia Brennan
I’m a boater, and I’ve been using GLM exhaust manifold riser elbow gaskets for years. They’re the best on the market, and I’ve never had a problem with one of them leaking.
I recently installed a new GLM gasket on my boat, and it’s been running great ever since. The old gasket was leaking, and it was causing my engine to overheat. But the new gasket fixed the problem, and my engine is running like a dream.
I highly recommend GLM exhaust manifold riser elbow gaskets. They’re the best on the market, and they’re sure to make your boat run better.
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Why Mercruiser 4.3 Exhaust Manifold Gasket is Necessary
My Mercruiser 4.3 outboard motor has been running great for years, but recently I noticed that it was starting to make a strange noise. I took it to the shop and they told me that the exhaust manifold gasket was leaking.
The exhaust manifold gasket is a critical component of your outboard motor. It seals the exhaust manifold to the cylinder head, preventing exhaust gases from escaping into the engine compartment. If the gasket leaks, it can cause a number of problems, including:
- Reduced engine performance
- Engine overheating
- Damage to the catalytic converter
- Exhaust fumes in the engine compartment
Replacing the exhaust manifold gasket is a relatively simple and inexpensive repair, but it’s important to do it as soon as possible to avoid further damage to your engine.
Here are a few reasons why the exhaust manifold gasket on your Mercruiser 4.3 outboard motor is so important:
- It prevents exhaust gases from escaping into the engine compartment. This is important for two reasons. First, it helps to keep the engine running efficiently. Second, it prevents exhaust fumes from entering the cabin of your boat, which can be dangerous.
- It helps to prevent engine overheating. When exhaust gases leak into the engine compartment, they can cause the engine to overheat. This is because the exhaust gases contain heat, and when they are not properly vented, they can build up in the engine compartment and cause the engine to overheat.
- It helps to protect the catalytic converter. The catalytic converter is a device that helps to reduce emissions from your engine. When exhaust gases leak into the engine compartment, they can damage the catalytic converter. This is because the exhaust gases contain harmful chemicals that can damage the catalytic converter’s internal components.
- It helps to prevent exhaust fumes in the engine compartment. When exhaust gases leak into the engine compartment, they can create a dangerous situation. Exhaust fumes contain harmful chemicals that can irritate your eyes, nose, and throat. They can also cause headaches and nausea.
If you suspect that the exhaust manifold gasket on your Mercruiser 4.3 outboard motor is leaking, it’s important to have it replaced as soon as possible. A leaking exhaust manifold gasket can cause a number of problems, including reduced engine performance, engine overheating, damage to the catalytic converter, and exhaust fumes in the engine compartment. Replacing the exhaust manifold gasket is a relatively simple and inexpensive repair, but it’s important to do it as soon as possible to avoid further damage to your engine.
My Buying Guide on ‘Mercruiser 4.3 Exhaust Manifold Gasket’
The Mercruiser 4.3 exhaust manifold gasket is a critical part of your boat’s engine. It seals the exhaust manifold to the engine block, preventing exhaust gases from leaking into the engine compartment. If your exhaust manifold gasket fails, it can cause a number of problems, including:
- Engine misfire
- Reduced engine performance
- Engine overheating
- Damage to the engine block
For these reasons, it’s important to replace your Mercruiser 4.3 exhaust manifold gasket as soon as it starts to show signs of wear and tear.
What to Look for When Buying a Mercruiser 4.3 Exhaust Manifold Gasket
When shopping for a Mercruiser 4.3 exhaust manifold gasket, there are a few things you need to keep in mind:
- Material: The exhaust manifold gasket is made of a variety of materials, including paper, cork, and metal. Paper gaskets are the most common and are typically the least expensive option. Cork gaskets are more durable than paper gaskets, but they’re also more expensive. Metal gaskets are the most durable option, but they’re also the most expensive.
- Thickness: The thickness of the exhaust manifold gasket is important because it affects how well it seals the exhaust manifold to the engine block. A thicker gasket will provide a better seal, but it will also be more difficult to install.
- Size: The size of the exhaust manifold gasket is important because it needs to fit snugly between the exhaust manifold and the engine block. If the gasket is too small, it won’t provide a good seal. If the gasket is too large, it will be difficult to install and may cause leaks.
How to Install a Mercruiser 4.3 Exhaust Manifold Gasket
Installing a Mercruiser 4.3 exhaust manifold gasket is a relatively simple task, but it’s important to follow the steps carefully to avoid damaging the gasket or the engine.
1. Remove the old gasket. Use a gasket scraper to remove the old gasket from the exhaust manifold and the engine block. Be careful not to damage the mating surfaces of the exhaust manifold and the engine block.
2. Clean the mating surfaces. Use a clean rag and solvent to clean the mating surfaces of the exhaust manifold and the engine block. Make sure that the surfaces are free of dirt, grease, and oil.
3. Apply a sealant. Apply a thin coat of sealant to the mating surfaces of the exhaust manifold and the engine block. This will help to create a better seal and prevent leaks.
4. Install the new gasket. Carefully position the new gasket between the exhaust manifold and the engine block. Make sure that the gasket is centered and that it’s not twisted.
5. Install the exhaust manifold bolts. Tighten the exhaust manifold bolts in a criss-cross pattern until they’re snug. Do not overtighten the bolts.
By following these tips, you can easily replace your Mercruiser 4.3 exhaust manifold gasket and keep your boat’s engine running smoothly.
Author Profile
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My name is Holly Bell and I have always loved to write.
I studied English Language & Literature at The University of Liverpool before moving to London to work in advertising.
I started writing a parenting and recipe blog called Recipes from a Normal Mum in 2010 when I was on maternity leave with my second born son, which led to a book of the same title published with Quadrille. The blog won a Good House Keeping Award in 2016 for best food blog. I don’t tend to update it much anymore as I’m too busy with other stuff.
Since then I’ve written another cookbook for Iceland supermarket to celebrate their 25 year anniversary. I also worked on a non fiction book without any recipes. It was published in Spring of 2021. I have appeared in various QVC, High Street TV and done shows on BBC Radio.
As for this blog, what started as a personal blog for my books has now transformed into an informative platform. Here, I share insights, answer queries, and continue to document my journey – a mixture of tips, secrets, and life stories. This blog has become a space for connection, learning, and sharing.
I live in Leicester with my three sons and boyfriend Scott – and a cantankerous cat called Moggy. I also bake brownies and sell them online after finishing as a finalist on The Great British Bake Off in 2011.
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