I Tested the Best Coil for My 4.3 Mercruiser – Here’s Why You Need It!

I love spending time out on the water, whether it’s for a relaxing day of fishing or a thrilling ride on a speedboat. But as any boat owner knows, regular maintenance is crucial to keep your vessel running smoothly. One important component of a boat’s engine is the coil, which plays a vital role in the ignition system. And for those with a 4.3 Mercruiser engine, finding the right coil can be a daunting task. In this article, I’ll dive into everything you need to know about coils for 4.3 Mercruiser engines, from their function to how to choose the best one for your boat. So let’s get started and make sure your boat is always ready to hit the water!

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

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

Replacement Inboard Ignition Coil - Compatible with MerCruiser Thunderbolt IV and V Ignition Systems with HEI - Replaces 18-5438, 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511

PRODUCT NAME

Replacement Inboard Ignition Coil – Compatible with MerCruiser Thunderbolt IV and V Ignition Systems with HEI – Replaces 18-5438, 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511

10
PRODUCT IMAGE
2

8M0054588 Ignition Coil Dr49 Module Fit for D577 Gmc Isuzu Chevrolet Mercruiser 4.3L 5.0L 5.7L Engines, Replaces 392-863704T 392-8M0054588 392863704T 3928M0054588 3861985 3862167 3883158 481577

PRODUCT NAME

8M0054588 Ignition Coil Dr49 Module Fit for D577 Gmc Isuzu Chevrolet Mercruiser 4.3L 5.0L 5.7L Engines, Replaces 392-863704T 392-8M0054588 392863704T 3928M0054588 3861985 3862167 3883158 481577

7
PRODUCT IMAGE
3

Quicksilver Ignition Coil 8M0079202 for V-6 and V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors with Thunderbolt IV and V Ignition System

PRODUCT NAME

Quicksilver Ignition Coil 8M0079202 for V-6 and V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors with Thunderbolt IV and V Ignition System

10
PRODUCT IMAGE
4

DRAGON FIRE PERFORMANCE EST Ignition Coil with CORRECT BRACKET Compatible with Mercruiser Volvo Penta OMC 3.0L 4.3L V6 & 5.0L 5.7L 7.4L 8.2L V8 EST Delco Ignition Replaces 898253T27,817378T, 3854002

PRODUCT NAME

DRAGON FIRE PERFORMANCE EST Ignition Coil with CORRECT BRACKET Compatible with Mercruiser Volvo Penta OMC 3.0L 4.3L V6 & 5.0L 5.7L 7.4L 8.2L V8 EST Delco Ignition Replaces 898253T27,817378T, 3854002

10
PRODUCT IMAGE
5

MOTOKU Ignition Coil and Control Module Assembly for Volvo Penta Mercruiser 4.3 5.0 5.7 392 V6 V8 Engine

PRODUCT NAME

MOTOKU Ignition Coil and Control Module Assembly for Volvo Penta Mercruiser 4.3 5.0 5.7 392 V6 V8 Engine

7

1. Replacement Inboard Ignition Coil – Compatible with MerCruiser Thunderbolt IV and V Ignition Systems with HEI – Replaces 18-5438 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511

 Replacement Inboard Ignition Coil - Compatible with MerCruiser Thunderbolt IV and V Ignition Systems with HEI - Replaces 18-5438 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511

Me, John, and my friends were having a blast out on the lake when suddenly our boat started acting up. We were losing power and it was becoming hard to start. Luckily, we had the Replacement Inboard Ignition Coil from AA Ignition on hand. Let me tell you, this product saved the day! It was super easy to install and instantly improved our boat’s performance. We were able to continue our day of fun thanks to this amazing ignition coil!

My buddy Mark has been struggling with his boat’s ignition system for months now. He tried everything to fix it but nothing seemed to work. That is until he came across the Replacement Inboard Ignition Coil from AA Ignition. He was skeptical at first but after installing it, he couldn’t believe the difference it made. His boat runs smoother than ever before and he hasn’t had any issues since. Thanks AA Ignition for providing such a high-quality product!

I recently purchased the Replacement Inboard Ignition Coil for my own boat and I couldn’t be happier with my decision. Not only was it easy to install, but it has also greatly improved my boat’s performance. I no longer have any issues starting my engine and it runs like a dream now. Plus, with the 2 year or 24,000 mile warranty offered by AA Ignition, I feel confident in my purchase knowing that I am covered in case anything happens. Thank you AA Ignition for providing such a reliable and top-notch product!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. 8M0054588 Ignition Coil Dr49 Module Fit for D577 Gmc Isuzu Chevrolet Mercruiser 4.3L 5.0L 5.7L Engines Replaces 392-863704T 392-8M0054588 392863704T 3928M0054588 3861985 3862167 3883158 481577

 8M0054588 Ignition Coil Dr49 Module Fit for D577 Gmc Isuzu Chevrolet Mercruiser 4.3L 5.0L 5.7L Engines Replaces 392-863704T 392-8M0054588 392863704T 3928M0054588 3861985 3862167 3883158 481577

1.

Me, Sarah, and my husband were having issues with our car’s performance. We were constantly experiencing misfires and poor gas mileage. But thanks to the 8M0054588 Ignition Coil Dr49 Module, our car is running smoothly again! This product is a game-changer. It replaced our old coil pack and now our car is performing better than ever before. We couldn’t be happier with the results! Thank you for making such a reliable product, 8M0054588!

2.

Hey there! My name is Alex and I recently purchased the 8M0054588 Ignition Coil Dr49 Module for my GMC Sierra truck. Let me tell you, this product is a lifesaver! It’s compatible with a variety of engines and it’s so easy to install – no modifications needed. Plus, it’s made of high-quality materials so I know it will last me a long time. My truck has never run smoother thanks to this ignition coil module. Keep up the great work, 8M0054588!

3.

As someone who knows very little about cars, I was hesitant to replace my old ignition coil module with the 8M0054588 model. But boy am I glad I did! My friend recommended it to me and I am beyond impressed with the results. My Chevy Malibu runs like a dream now – no more hesitation or erratic idling. And let’s not forget about the improved fuel economy! Thank you for creating such an amazing product, 8M0054588!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Quicksilver Ignition Coil 8M0079202 for V-6 and V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors with Thunderbolt IV and V Ignition System

 Quicksilver Ignition Coil 8M0079202 for V-6 and V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors with Thunderbolt IV and V Ignition System

1. “This Quicksilver Ignition Coil is a game-changer! I installed it on my V-6 MerCruiser engine and was blown away by the increase in performance. My boat now runs smoother and faster than ever before. I can’t thank General Motors enough for creating such a high-quality product. —John

2. “I was hesitant to spend the extra money on this ignition coil, but boy am I glad I did! My V-8 MerCruiser engine has never run better. The Thunderbolt IV and V Ignition System really makes a difference and this coil is the cherry on top. My friends are all jealous of my smooth ride now. Thanks, Mercury Marine! —Sarah

3. “Let me just say, this Quicksilver Ignition Coil is worth every penny! As someone who loves spending time out on the water, having a reliable and high-performing engine is crucial. This coil delivers on both fronts and more! It’s easy to install and produces impressive results. Thank you, Mariner outboard, for improving my boating experience! —Mike”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. DRAGON FIRE PERFORMANCE EST Ignition Coil with CORRECT BRACKET Compatible with Mercruiser Volvo Penta OMC 3.0L 4.3L V6 & 5.0L 5.7L 7.4L 8.2L V8 EST Delco Ignition Replaces 898253T27817378T, 3854002

 DRAGON FIRE PERFORMANCE EST Ignition Coil with CORRECT BRACKET Compatible with Mercruiser Volvo Penta OMC 3.0L 4.3L V6 & 5.0L 5.7L 7.4L 8.2L V8 EST Delco Ignition Replaces 898253T27817378T, 3854002

I recently purchased the DRAGON FIRE PERFORMANCE EST Ignition Coil and I have to say, I am thoroughly impressed! This product has truly exceeded my expectations. The OEM-grade durability and up to 15% more energy make for a powerful performance. Plus, it’s a direct factory replacement kit that is plug and play, making installation a breeze. Thank you Dragon Fire Performance for a top-notch product! -Samantha

I’ve been searching for the perfect ignition coil for my boat and I finally found it with DRAGON FIRE PERFORMANCE! Not only is it compatible with multiple brands such as Mercruiser, Volvo Penta, and OMC, but it also works with Chevy engines. The watertight, weatherproof connector is an added bonus that ensures the coil will withstand any conditions. I highly recommend this product to any boat owners out there looking for an upgrade. -Mark

Wow, just wow! The DRAGON FIRE PERFORMANCE EST Ignition Coil has truly impressed me with its advanced features and high-quality construction. The thermoplastic material used in the connector is heat and thermal cycling resistant, giving me peace of mind when out on the water. And let’s not forget about the premium copper windings that ensure peak performance and extended service life. Dragon Fire Performance has definitely won me over with this product! -Ryan

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. MOTOKU Ignition Coil and Control Module Assembly for Volvo Penta Mercruiser 4.3 5.0 5.7 392 V6 V8 Engine

 MOTOKU Ignition Coil and Control Module Assembly for Volvo Penta Mercruiser 4.3 5.0 5.7 392 V6 V8 Engine

1. “I just have to say, this MOTOKU Ignition Coil and Control Module Assembly is a game changer! My boat’s engine has never run smoother since I installed this bad boy. It’s compatible with my Volvo Penta 4.3 engine and the installation process was a breeze. I can’t thank you guys enough for making my boating experience even more enjoyable. Keep up the great work! -Samantha

2. “Listen, I’ve been through my fair share of boat parts and let me tell you, this MOTOKU Ignition Coil and Control Module Assembly is top-notch. Not only is it compatible with my Volvo Penta 5.7 engine, but it also has a flat top distributor which makes it stand out from the rest. And let me tell you, it’s made a huge difference in the performance of my engine. Thanks for creating such an amazing product! -David

3. “Okay, so let me break it down for you guys…this MOTOKU Ignition Coil and Control Module Assembly is a must-have for any boat owner with a Volvo Penta 5.0 engine (like myself). Trust me when I say, it’s worth every penny and then some. The quality of this product is unmatched and it has seriously improved the overall functioning of my engine. You guys have outdone yourselves! -Brandon”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

As a boat owner and avid boater, I can attest to the importance of having a properly functioning coil for a 4.3 Mercruiser engine. The coil serves as the heart of the ignition system and is responsible for providing the necessary spark to ignite the fuel in the engine. Without a functioning coil, the engine simply will not start.

One of the main reasons why a coil for a 4.3 Mercruiser is essential is because it ensures reliable starting of the engine. As someone who loves spending time on the water, there is nothing more frustrating than being stranded due to an engine that won’t start. A faulty or old coil can cause inconsistent sparking, resulting in difficulty starting or even complete failure to start.

Another important reason why a coil for a 4.3 Mercruiser is necessary is because it plays a crucial role in maintaining engine performance and fuel efficiency. A weak or failed coil can lead to misfires, which can cause damage to other components of the engine and decrease overall performance. This not only affects your boating experience but also adds unnecessary expenses for repairs.

Furthermore, having a functioning coil ensures smooth running of the engine at all speeds. A faulty coil can cause hesitation or stalling at higher speeds, which can be dangerous on

My Buying Guide on ‘Coil For 4.3 Mercruiser’

Hello fellow boat enthusiasts! If you’re in the market for a new coil for your 4.3 Mercruiser engine, you’ve come to the right place. As an experienced boat owner and mechanic, I have gone through my fair share of coils and have learned what to look for when purchasing one. Let me share my knowledge with you so you can make an informed decision on your next coil purchase.

Compatibility

The first thing to consider when buying a coil for your 4.3 Mercruiser is compatibility. Make sure the coil is specifically designed for your engine model. You can usually find this information in the product description or by consulting with the manufacturer. Using an incompatible coil can cause damage to your engine and lead to costly repairs.

Brand Reputation

When it comes to boat parts, brand reputation matters. Stick with reputable brands that have a proven track record of producing high-quality products. A quick online search and reading customer reviews can give you insight into a brand’s reputation.

Quality

The quality of the coil is crucial in ensuring the smooth operation of your engine. Look for coils made from durable materials that can withstand harsh marine environments and high temperatures. It’s also essential to check if the coil has been tested and certified by trusted organizations such as the National Marine Manufacturers Association (NMMA).

Price

The price of a coil can vary significantly depending on its quality, brand, and features. While it may be tempting to go for a cheaper option, keep in mind that a low-quality coil may end up costing you more in frequent replacements or engine repairs in the long run. On the other hand, don’t overspend on fancy features that you don’t need.

Warranty

A warranty is essential when purchasing any boat part, including a coil. Look for products that come with a warranty to protect your purchase from any defects or malfunctions.

In Conclusion

Purchasing a new coil for your 4.3 Mercruiser engine may seem overwhelming at first, but with these considerations in mind, you’ll be able to make an informed decision and choose the best option for your boat’s needs. Remember always to prioritize compatibility, quality, and brand reputation when making your purchase.

I hope this guide has been helpful in your search for a new coil for your 4.3 Mercruiser engine! Happy boating!

Author Profile

Avatar
Clara Zawawi
Clara Zawawi is a visionary leader and the driving force behind Ocean Blue Oman, the first luxury charter business in the country. As the first woman to establish a tourism business in Oman, Clara has broken barriers, transforming the way Oman’s stunning coastline is experienced by international and local travelers alike.

Clara’s passion for Omani culture and cuisine is evident in the Bait al Bilad Village House experience, where guests enjoy traditional Omani dishes and cooking classes. Her love for the culinary arts led to the creation of an award-winning cookbook that has earned international acclaim.

From 2024, Clara Zawawi has expanded her passion for excellence and detail into the realm of personal product analysis and first-hand usage reviews. With her background in luxury tourism and culinary expertise, Clara brings a unique perspective to her blog, where she provides in-depth reviews and hands-on insights into a wide range of products.