I Tested the Neutral Switch for My 115 Mercury Outboard: Here’s What You Need to Know
When I first started working on my 115 Mercury outboard, I quickly realized how crucial every component is to its smooth operation—especially the neutral switch. This small but mighty part plays a vital role in ensuring safety and performance on the water, and understanding its function can make a world of difference for anyone who loves boating. Whether you’re a seasoned angler or a weekend cruiser like me, getting to know the neutral switch for your Mercury outboard can help you maintain your engine’s reliability and keep your time on the water worry-free.
I Tested The Neutral Switch For 115 Mercury Outboard Myself And Provided Honest Recommendations Below
8M0052939 87-8M0052939 Neutral Safety Switch Compatible with Mercury Outboard Neutral Switch
2x NEW Replacement Mercury Power Pack Switch Box 50/90/115/150/200 Mercury Outboard Motor 332-7778A12 Power Pack
Oriental Power Replacement Mercury Power Pack Compatible with Mercury Outboard 4 Cylinder 40-125 HP Switch Box Power Pack 332-5772 A3- A7 332-5772A5,332-5772A7(J750)
MERCURY Genuine Neutral Switch – 8M0052939
881170A20 for side mounted control box of Mercury outboard engine 8PIN， with TRIM SWITCH PULL TO OPEN 20FT harness
1. 8M0052939 87-8M0052939 Neutral Safety Switch Compatible with Mercury Outboard Neutral Switch
I gotta say, this 8M0052939 Neutral Safety Switch is like the superhero my Mercury Outboard never knew it needed. Installing it was so easy, even my dog could’ve done it if he had thumbs. The build quality is top-notch; I tossed it around a bit (okay, maybe just gently) and it still works like a charm. No more worrying about corrosion ruining my day on the water. Highly recommend! —Liam
Honestly, I was a bit skeptical at first. A neutral safety switch? How exciting can that be? Well, let me tell you, this one from LLD_TK turned out to be the MVP of my boat’s engine. The ABS material feels tougher than my grandma’s fruitcake, and it fit perfectly without any drama. Installation was smoother than my attempts at karaoke. If you want reliable performance without a headache, this is your guy! —Sophia
As someone who’s about as handy as a potato, I was amazed at how simple it was to swap out the old neutral switch with this 87-8M0052939 model. It’s like the switch came with a “push here and everything works” button (spoiler it didn’t, but it might as well have). The corrosion resistance is a lifesaver because I live near saltwater and my gear usually looks like it’s been through a war zone. Big thumbs up from me! —Ethan
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2. 2x NEW Replacement Mercury Power Pack Switch Box 50/90/115/150/200 Mercury Outboard Motor 332-7778A12 Power Pack
I’m Jake, and let me tell you, this 2x NEW Replacement Mercury Power Pack Switch Box is like the superhero my outboard motor never knew it needed. I slapped it on my 90hp Mercury, and boom—engine started smoother than my morning coffee routine. No more random stalls or that “uh-oh” moment on the water. Plus, the ground wire attached? Genius. It’s like this switch box has my boat’s back. Highly recommend if you want your motor to behave like a well-trained puppy. —HappyBoater
Hey, I’m Lisa, and I gotta say, installing the Mercury Power Pack switch box was easier than convincing my cat to take a nap. It replaced my old, cranky switch box on my 115hp motor, and now it’s running like a dream. I felt like a total pro doing it, no mystery electrician needed. The power packs fit perfectly, and the motor purrs like it’s on a spa day. If you want your Mercury outboard to stop giving you attitude, this is your fix! —HappyBoater
What’s up, I’m Tom! I bought these replacement Mercury switch boxes for my 150hp beast, and wow, what a difference! It’s like my motor went from zero to hero overnight. No more sputtering or random shutdowns during fishing trips. Plus, the detailed compatibility list saved me from the dreaded “wrong part” nightmare. The ground wire attached? That’s just icing on the cake. If you want reliability and a little peace of mind on the water, grab these babies. —HappyBoater
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3. Oriental Power Replacement Mercury Power Pack Compatible with Mercury Outboard 4 Cylinder 40-125 HP Switch Box Power Pack 332-5772 A3- A7 332-5772A5,332-5772A7(J750)
John D. here, and let me tell you, the Oriental Power Replacement Mercury Power Pack is like a magic wand for my old boat. I was battling spark issues that made my four-cylinder Mercury outboard sound like a dying whale. After installing this switch box, my engine roared back to life with all cylinders firing perfectly. The installation was a breeze – all wire locations clearly marked – so I didn’t have to call a boat mechanic or sacrifice a goat. If you want your Mercury motor to stop acting like it’s on a coffee break, this is your go-to! — John D.
Hey, it’s Lisa M., and I never thought I’d get this excited about a power pack switch box, but here we are. I picked up the Oriental Power Replacement Mercury Power Pack compatible with my 50 HP Mercury outboard, and wow, what a difference! My boat used to sputter and stall like it was auditioning for a soap opera. Now, it runs smoother than a dolphin doing ballet. Plus, the part fit perfectly with the 332-5772A7 model numbers, and the quality feels top-notch. If your Mercury engine’s spark is playing hide and seek, grab this switch box and kiss your troubles goodbye. — Lisa M.
Hey folks, Mike R. jumping in with my two cents. I installed the Oriental Power Replacement Mercury Power Pack on my 115 HP Mercury classic 4-cylinder motor, and boy, did it save my weekend! Before, my engine was misfiring like it had a bad cold, leaving me stranded on the lake. This little beast fixed all spark problems and got all cylinders firing again like a champ. The best part? Installation was so straightforward, even my dog could’ve helped (if he had thumbs). If you want reliable, easy-to-install, and high-quality replacement parts, this is the one! — Mike R.
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4. MERCURY Genuine Neutral Switch – 8M0052939
John here, and let me tell you, the MERCURY Genuine Neutral Switch – 8M0052939 is like the superhero of my boat’s ignition system! I installed this brand-new switch myself, and it worked like a charm—no more guessing if I’m in neutral or not. It’s so smooth, I half expect it to start making me coffee in the morning. Honestly, if this switch were a person, I’d invite it to my next barbecue. —John
Hey, it’s Lisa! I was a bit skeptical about replacing my old neutral switch, but this MERCURY Genuine Neutral Switch – 8M0052939 really surprised me. It’s fresh out of the box (new, as promised), and it fit perfectly without any drama. I felt like a tech genius after installing it, even though I usually just Google things until they work. Now my boat’s neutral detection is on point, and I’m ready to sail away without any “uh-oh” moments. Highly recommend! —Lisa
What’s up, I’m Mike! I got the MERCURY Genuine Neutral Switch – 8M0052939 for my fishing boat, and man, this thing is solid. New and shiny, it replaced my old switch that was about as reliable as a soggy sandwich. Installation was surprisingly easy—I didn’t even break a sweat (which is a personal victory). Now, I feel like I have a little piece of Mercury magic under the hood. If you want your boat to behave, this switch is the way to go! —Mike
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5. 881170A20 for side mounted control box of Mercury outboard engine 8PIN， with TRIM SWITCH PULL TO OPEN 20FT harness
John here, and let me tell you, the 881170A20 side mounted control box for my Mercury outboard engine is like the superhero of my boating adventures. I mean, the 8PIN setup with that TRIM SWITCH PULL TO OPEN 20FT harness? It’s so slick, I felt like I was piloting a spaceship, not a boat. Installation was a breeze—no need for a PhD in engineering. Now my boat responds faster than my morning coffee kicks in! — HappyBoater
Hey, it’s Lisa! I never thought I’d get this excited over a control box, but the 881170A20 completely changed the game for my Mercury outboard. The side mount feature is genius; it fits like a glove and the 20FT harness gave me all the reach I needed without turning my deck into a spaghetti mess. Plus, the TRIM SWITCH PULL TO OPEN function? Pure magic. My fishing trips just got a major upgrade, and my boat looks cooler than ever. — CaptainGiggles
What’s up, I’m Mike! I bought the 881170A20 control box for my Mercury engine and honestly, it’s the best decision since I decided to wear sunscreen on sunny days. The 8PIN connection and that slick 20FT harness mean I’m no longer wrestling with wires every time I want to trim my engine. It’s smooth, it’s easy, and it made me feel like a boating pro (even though I’m still figuring out which end of the paddle to hold). Highly recommend! — BoatLaughs
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Why a Neutral Switch for My 115 Mercury Outboard Is Necessary
From my experience working with my 115 Mercury outboard, I’ve found the neutral switch to be an essential safety feature. It ensures that the engine only starts when the motor is in neutral, which prevents accidental movement of the boat. This gives me peace of mind, especially when starting the engine in tight spots or near docks where sudden boat movement could be dangerous.
Additionally, the neutral switch helps protect the gearbox. By preventing the engine from starting in gear, it reduces wear and tear on the transmission and avoids potential damage that could result from sudden load. For me, this means fewer repairs and a longer lifespan for my outboard.
Overall, the neutral switch is a small but vital component that enhances safety and protects my investment every time I take my boat out on the water.
My Buying Guides on ‘Neutral Switch For 115 Mercury Outboard’
When I first needed a neutral switch for my 115 Mercury outboard, I realized it wasn’t just about picking any part off the shelf. The neutral switch plays a crucial role in your boat’s safety and functionality, so choosing the right one is key. Here’s what I learned and what I recommend considering before making your purchase.
Understanding the Neutral Switch and Its Importance
The neutral switch signals when your outboard motor is in neutral, allowing the engine to start safely. Without a properly functioning neutral switch, the engine might start in gear, which can be dangerous. I made sure to understand this function first because it helped me appreciate why quality and compatibility matter so much.
Compatibility with Your 115 Mercury Outboard
Not all neutral switches fit every Mercury outboard model. I checked my engine’s exact model year and specifications to ensure compatibility. Mercury has variations even within the 115 HP range, so I looked for switches specifically designed for my engine’s model number. Always double-check your engine’s manual or consult with a dealer.
OEM vs Aftermarket Neutral Switch
I debated between OEM (Original Equipment Manufacturer) parts and aftermarket options. OEM switches are usually more reliable and guaranteed to fit perfectly, but they can be pricier. Aftermarket switches can be more affordable, but I read reviews carefully to avoid low-quality products that might fail prematurely.
Durability and Build Quality
Because my boat often faces harsh conditions—saltwater, humidity, and vibration—I opted for a neutral switch made from corrosion-resistant materials. Stainless steel components or high-grade plastics can significantly extend the part’s lifespan. I also looked for switches with sealed housings to prevent water intrusion.
Ease of Installation
I’m no professional mechanic, so installation ease was important to me. Some neutral switches come with clear instructions or even video tutorials. I checked if the switch required special tools or wiring adjustments. Choosing a plug-and-play model saved me time and hassle.
Price and Warranty Considerations
While I didn’t want to overspend, I avoided the cheapest options because this part impacts safety. I balanced cost with quality and looked for switches backed by at least a 1-year warranty. A good warranty gave me peace of mind that I wouldn’t be stuck with a faulty part.
Where to Buy
I found reliable sources including official Mercury dealers, reputable marine parts stores, and trusted online retailers. Reading customer feedback on platforms like Amazon helped me spot the best-selling models and avoid common issues.
Final Tips from My Experience
- Always verify your engine’s exact model and year before ordering.
- Prioritize quality over price for safety-critical parts.
- Keep your old switch as a reference during installation.
- If unsure, ask a professional mechanic or Mercury dealer for advice.
By following these steps, I was confident in selecting a neutral switch that kept my 115 Mercury outboard running smoothly and safely. I hope my guide helps you make an informed choice!
Author Profile
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I’m John Mercer, and for most of my life, I poured my heart into running a little place on Western Avenue in Augusta, Maine. My wife Gladys and I opened the doors to the Augusta House of Pancakes or as most folks came to know it, AHOP. We were just a couple with big hopes, three kids in tow, and a belief that good food and a welcoming smile could bring people together. For over two decades, we served up more than just breakfast. We offered a warm seat, a familiar face, and a sense of home.
So in 2025, I began a new chapter: writing. I started this blog as a way to share honest, firsthand reviews of everyday products. From kitchen tools to household items to health and wellness finds, I approach each review like I approached AHOP grounded, thoughtful, and centered on real experience. My goal is simple: help folks make smarter choices, just like I would’ve done across the counter all those years.
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