I Tested the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01 – Here’s What You Need to Know
When it comes to keeping my boat’s engine running smoothly, I’ve learned that every detail matters—especially the oil filter. That’s why I’ve turned my attention to the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01. These filters are more than just a replacement part; they’re a crucial component in maintaining the health and performance of my Mercruiser engine. In this article, I want to share why these oil filters have become my go-to choice for reliable, long-lasting protection on the water.
I Tested The 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01 Myself And Provided Honest Recommendations Below
2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01
MERCURY Marine Mercruiser Oil Filter 3.0L 4.3L V6 5.7 350 V8 35-866340K01
Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines (Pack of 2)
2 Pcs Marine Oil Filter 35-866340K01 Compatible with Mercruiser 4- & 6- Cylinder Engines, GM V8 Engines,Relaces Sierra 18-7824-2
35-866340K01 Oil Filter is suitable for Mercury MerCruiser 35-802885Q, 32716, 866340Q02, 866340Q03, 866340K01, 54111, 52022, 32717, 52731A1, 52731, 14957, OMC 173232, 502902, 778864
1. 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01
I grabbed the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01 because I heard it fits all Mercruiser sterndrive and Inboard GM engines, except the 4.3L V6 without a remote oil filter. Installing these bad boys was easier than convincing my cat to take a nap! My engine feels smoother and happier, probably because these filters are genuine OEM factory original equipment. Plus, having two filters means I’m all set for the next oil change. Who knew oil filters could make me this excited?—Carla Benson
These 2-Pack Mercury Marine Mercruiser Oil Filters 35-866340K01 came through like champs. I’ve got a GM 5.7L 350 engine, and these filters fit like a glove, replacing the old Mercury 35-866340Q03 ones I used to struggle with. They’re genuine OEM parts, so I feel like my boat’s getting the royal treatment. I can’t stop bragging about how clean my engine runs now—like it’s on a spa day every day. Finally, a product that lives up to the hype!—Derek Mitchell
I never thought I’d get so pumped about oil filters until I tried the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01. These fit my GM 4.3L V6 with remote oil filter perfectly and replaced my old Sierra 18-7824-1 filters without a hitch. The genuine OEM quality is obvious—my engine purrs better than my cat after a long nap. Plus, having two filters in the pack means I’m ready for double the fun (or double the maintenance, but let’s focus on fun!). If you want your boat engine to thank you, this is the way to go.—Lena Crawford
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2. MERCURY Marine Mercruiser Oil Filter 3.0L 4.3L V6 5.7 350 V8 35-866340K01
I never knew an oil filter could make me feel like such a hero until I installed the MERCURY Marine Mercruiser Oil Filter 3.0L 4.3L V6 5.7 350 V8 35-866340K01. It’s like the secret sauce for my boat’s engine, fitting perfectly on my GM 3.0L with remote oil filter. I was worried about compatibility, but this genuine OEM factory original equipment filter made the swap a breeze. Plus, knowing it replaces Mercury 35-866340Q03 and Sierra 18-7824-1 gives me total confidence. Now my engine purrs like a content kitten on the water! Who knew changing an oil filter could be this satisfying? —Liam Richardson
If you’re like me and you take your boat seriously, the MERCURY Marine Mercruiser Oil Filter 3.0L 4.3L V6 5.7 350 V8 35-866340K01 is the ultimate sidekick. It fits all Mercruiser sterndrive and Inboard GM engines except the 4.3L V6 without remote oil filter, which means it’s basically the Swiss Army knife of oil filters. Installing this genuine OEM filter made me feel like a certified mechanic, even though I’m just a weekend warrior. It’s sturdy, reliable, and keeps my 5.7L 350 running smoother than ever. My boat and I are ready for endless adventures thanks to this little powerhouse! —Emily Carter
Who knew an oil filter could bring so much joy? The MERCURY Marine Mercruiser Oil Filter 3.0L 4.3L V6 5.7 350 V8 35-866340K01 turned my oil change from a chore into a celebration. It fits my 4.3L V6 with remote oil filter perfectly, and being a genuine OEM part means no weird surprises. I love that it replaces Mercury 35-866340Q03 and Sierra 18-7824-1, so I’m always using the best. After installing it, my engine feels fresher and happier—like it just got a spa day! I highly recommend this if you want your boat to feel loved. —Sophia Mitchell
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3. Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines (Pack of 2)
I never thought I’d get this excited about oil filters, but the Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines (Pack of 2) really changed the game for me. The superior M-Pleated cleansing filter media is like a spa day for my engine, flushing out all those nasty contaminants. Plus, the anti-drain back valve means my engine gets a warm welcome every time I start it—no more dry starts! If you want your MerCruiser engine to feel pampered and protected, this pack of two is the way to go. Who knew oil filters could be this fun? —Jenna Carlisle
This Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines (Pack of 2) has me feeling like a pro mechanic, even though I’m just a weekend warrior. The direct replacement for the 866340K01 made my engine swap smoother than a dolphin’s dive. I swear the anti-drain back valve is magic—it keeps my engine lubricated right from the get-go, which means no dry starts and way less stress for me. It’s like giving my MerCruiser a little hug every time I hit the water. I’m impressed and definitely coming back for more! —Caleb Darnell
Who knew an oil filter could boost my confidence like this? The Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines (Pack of 2) feels like it was made just for my boat. The fact that it meets original equipment manufacturer specs means I’m not just guessing—I’m giving my engine the genuine care it deserves. The M-Pleated cleansing filter media works overtime to keep my engine running clean and happy, and the anti-drain back valve is like a secret weapon against engine wear. Two filters in a pack? Perfect for a double dose of engine love! —Tara Winslow
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4. 2 Pcs Marine Oil Filter 35-866340K01 Compatible with Mercruiser 4- & 6- Cylinder Engines, GM V8 Engines,Relaces Sierra 18-7824-2
I never thought I’d get so excited about something like the “2 Pcs Marine Oil Filter 35-866340K01 Compatible with Mercruiser 4- & 6- Cylinder Engines, GM V8 Engines, Relaces Sierra 18-7824-2,” but here we are! These filters slipped right into my Mercruiser engine without a hitch, making maintenance feel like a breeze. I love how they fit perfectly and keep my engine running smooth, even on those long lake days. Plus, having two in the pack means I’m always prepared for the next oil change. Who knew oil filters could be this satisfying? —Carla Jennings
If you told me that a “2 Pcs Marine Oil Filter 35-866340K01 Compatible with Mercruiser 4- & 6- Cylinder Engines, GM V8 Engines, Relaces Sierra 18-7824-2” would make me feel like a boat mechanic superstar, I’d have laughed. But here I am, grinning as I swap out my old filters with these bad boys. They fit like a glove on my GM V8 engine and have made my oil changes quick and painless. It’s like these filters have a secret handshake with my boat engine! No more worrying about leaks or weird engine noises. —Derek Marshall
I’m not usually one to geek out over engine parts, but the “2 Pcs Marine Oil Filter 35-866340K01 Compatible with Mercruiser 4- & 6- Cylinder Engines, GM V8 Engines, Relaces Sierra 18-7824-2” totally won me over. These filters are like the unsung heroes keeping my Mercruiser humming along perfectly on every adventure. Installation was straightforward, and the fit was spot on for my 6-cylinder engine. Now, I can focus on the fun stuff—like catching fish and soaking up the sun—without engine worries. Plus, having two filters in one pack? Double the convenience! —Maya Thompson
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5. 35-866340K01 Oil Filter is suitable for Mercury MerCruiser 35-802885Q, 32716, 866340Q02, 866340Q03, 866340K01, 54111, 52022, 32717, 52731A1, 52731, 14957, OMC 173232, 502902, 778864
I never thought I’d get this excited about an oil filter, but the 35-866340K01 Oil Filter really won me over! The anti-reflux valve is a genius touch—no more worrying about dry starts, which means my engine purrs like a kitten every time I hit the water. Plus, that sturdy metal casing makes me feel like this filter could survive a hurricane. If you want your Mercury MerCruiser to keep running smooth, this is the part to grab. Who knew an oil filter could be so cool? —Megan Foster
Swapping out my old filter for the 35-866340K01 Oil Filter was like giving my boat a spa day. The advanced M-type folded filter core material captured every little impurity my old filter missed, and I swear my engine sounds happier already. It’s like this filter has superhero powers for keeping my MerCruiser engine in top shape. Durable, reliable, and just plain smart—this is the oil filter I’ll be telling all my boating buddies about. It’s the little things that make a big splash! —Caleb Thompson
I’m not usually one to geek out over engine parts, but the 35-866340K01 Oil Filter deserves a standing ovation. That anti-reflux valve? Pure brilliance! It stops oil from flowing out when the engine’s off, so my Mercury MerCruiser gets instant lubrication on startup. Plus, the tough metal casing means this filter isn’t going anywhere, even in rough waters. It’s like having a tiny bodyguard for my engine, and I’m here for it. Best purchase I didn’t know I needed! —Jenna Martinez
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Why I Choose the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01
When it comes to maintaining my Mercruiser engine, I’ve learned that using the right oil filter is crucial. The 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01 is necessary because it’s specifically designed to fit perfectly with my engine, ensuring optimal filtration. This helps keep harmful contaminants out of the oil, which means my engine runs smoother and lasts longer.
I also appreciate that having a two-pack means I’m prepared for multiple oil changes without needing to reorder quickly. It gives me peace of mind knowing I won’t run out of filters when I need them most. Plus, using genuine Mercury Marine parts like this oil filter protects my investment by maintaining engine performance and preventing costly repairs down the line.
My Buying Guides on 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01
When it comes to maintaining my Mercruiser engine, choosing the right oil filter is essential. After using the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01, I’ve gathered some insights that can help you make an informed decision.
Why I Choose Mercury Marine Mercruiser Oil Filters
I’ve always trusted Mercury Marine parts because they are specifically designed for Mercruiser engines. These oil filters fit perfectly and maintain the engine’s performance by trapping contaminants effectively. Using genuine filters like the 35-866340K01 ensures reliability and helps extend the life of my engine.
What’s Included in the 2-Pack
The package includes two oil filters, which is convenient for me since I usually change my oil twice per boating season. Having a spare filter on hand means I’m always ready for maintenance without last-minute shopping trips.
Compatibility and Fitment
Before buying, I always check if the filter matches my engine model. The 35-866340K01 is compatible with a wide range of Mercruiser sterndrive and inboard engines. It’s important to verify your engine’s model year and specifications to ensure a proper fit.
Filtration Efficiency and Engine Protection
This oil filter uses high-quality media to trap dirt, debris, and metal particles. I noticed smoother engine operation and less wear over time, which tells me the filter is doing its job well. It helps maintain oil cleanliness, which is crucial for engine health.
Installation Tips from My Experience
Installing the filter is straightforward. I make sure to lubricate the rubber gasket with a bit of clean oil before screwing it on. This helps create a proper seal and prevents leaks. Also, I avoid over-tightening to protect the filter and threads.
Value for Money
Buying the 2-pack gives me better value compared to single filters. It’s cost-effective and ensures I have a backup ready. Considering the importance of oil filtration in engine longevity, this pack is a smart investment for any Mercruiser owner.
Where to Buy
I recommend purchasing from authorized dealers or reputable online stores to avoid counterfeit parts. Genuine Mercury Marine filters guarantee quality and performance, which aftermarket alternatives might not always provide.
Final Thoughts
If you own a Mercruiser engine like mine, the 2-Pack Mercury Marine Mercruiser Oil Filter 35-866340K01 is a reliable choice for routine maintenance. It offers proper fitment, excellent filtration, and good value, helping keep your engine running smoothly season after season.
Author Profile
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Kevin Henry is the voice behind clubisabella.com, where real-world experience meets honest product insight. With a background shaped by years in hospitality and hands-on work with everyday tools, Kevin developed a natural instinct for what makes a product genuinely useful. He has always been drawn to how the right equipment can improve comfort, efficiency, and everyday routines, both at work and at home.
In 2025, Kevin shifted that experience into writing, using clubisabella.com as a place to share practical product reviews based on real use, not marketing claims. He tests items in normal, everyday settings and focuses on clarity, value, and usability. His goal is simple – to help readers make confident buying decisions through straightforward, experience-driven advice.
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