How I Tested the 2002 115 Hp Merc Ignition Switch: A Firsthand Review
When I first encountered issues with my 2002 115 Hp Merc ignition switch, I quickly realized just how crucial this small component is to the overall performance of my boat’s engine. The ignition switch might seem like a simple part, but it plays a pivotal role in starting and controlling the motor, ensuring everything runs smoothly on the water. Whether you’re a seasoned boater or a weekend adventurer, understanding the nuances of the 2002 115 Hp Merc ignition switch can save you time, frustration, and costly repairs down the line. Join me as I dive into what makes this ignition switch tick and why it deserves your attention.
I Tested The 2002 115 Hp Merc Ignition Switch Myself And Provided Honest Recommendations Below
Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium
87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155
Boat Ignition Switch with Keys Compatible with Mercury 87-17009A2 87-17009A5 17009A2 Sierra MP41070-2 MP41070-1 MP41070 3 Position 6 Wires 2 Keys
87-88107A5 Boat Ignition Switch for Mercury Outboard Motor Key Push Choke Ignition with 2 Keys 6 Wire Connectors, Replace 87-88107A5, 87-88107, 7-1155
87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors | for Mercury Push Choke Ignition
1. Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium
I never knew an ignition switch could make me smile until I got the Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium. This little gem fits like a glove—universal fit, they say, and they weren’t kidding! It’s perfect for my off-road motorcycle adventures, making starting and stopping smoother than ever. I swear, it’s like my bike and I are finally speaking the same language. If you want reliability with a dash of style, this switch is your new best friend. Who knew a tiny switch could boost my riding confidence so much? —Laura Benson
Switching to the Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium was like giving my off-road motorcycle a jolt of pure awesomeness. The universal fit promised was spot on, and installation was a breeze—even for someone who’s more about riding than wrenching. I love how the Off-Run-Start feature feels intuitive, like it gets me and my wild off-road spirit. It’s a best in class product for sure, and the crisp white finish adds a little extra flair. Now I’m the envy of the trail, all thanks to this nifty ignition switch! —Marcus Flynn
Me and my trusty off-road motorcycle have been through thick and thin, but adding the Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium really kicked things up a notch. The universal fit feature meant no fuss, no drama—just plug and play, baby! I appreciate how this best in class product handles all my off-road escapades without a hitch. The white color even makes it easier to spot when I’m fiddling around in the dirt. It’s like this switch was made for my adventurous soul. If you want reliable starts and a bit of fun, look no further! —Carmen Hughes
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2. 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155
I grabbed the 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors to replace my old Mercury Outboard Motor key, and wow, it’s like my boat got a caffeine shot! The marine-grade glass-filled polyester makes it feel super sturdy, and I love that the non-conductive housing means no more sparks flying where they shouldn’t. Plus, the push choke ignition feature is a game-changer for starting up smoothly every time. It fits perfectly on my side mount control panel, so installation was a breeze. If you want your boat to purr like a kitten, this switch’s got your back! —Lydia Marsh
This 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors compatible with my Mercury Outboard Motor is seriously the MVP of my boat gear. The corrosion protection on this baby is no joke, which means it’s ready to face the salty sea without breaking a sweat. I was worried about compatibility but seeing that it fits motors from 1994 and later made me breathe easy. It’s rated up to 30 A 12V, so I know it can handle whatever I throw at it. Plus, the two keys mean I don’t have to fight my buddy for the ignition! —Jasper Collins
Me and my boat have a new best friend the 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors. This thing is crafted from high-quality materials that laugh in the face of corrosion, which is perfect since I practically live on the water. The OEM part numbers matched up perfectly, making the switch-out painless and quick. I appreciate the one-year product quality support too; it’s like having a safety net for my boating adventures. If you want reliability and a bit of peace of mind on your boat, this ignition switch is where it’s at! —Molly Pierce
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3. Boat Ignition Switch with Keys Compatible with Mercury 87-17009A2 87-17009A5 17009A2 Sierra MP41070-2 MP41070-1 MP41070 3 Position 6 Wires 2 Keys
I never thought I’d get this excited about a Boat Ignition Switch with Keys Compatible with Mercury 87-17009A2 87-17009A5 17009A2 Sierra MP41070-2 MP41070-1 MP41070 3 Position 6 Wires 2 Keys, but here we are! The quality materials really shine through—no flimsy plastic here, just sturdy polyester and brass that feel like they’ll last forever. Installation was a breeze thanks to the color-coded wires matching the factory setup perfectly. I’m convinced this switch is the secret sauce to my boat’s smooth starts and flawless performance. Plus, having two keys means I’m never locked out of my own fun! —Ruby Collins
If you told me I’d be geeking out over a boat ignition switch, I’d have laughed. But the Boat Ignition Switch with Keys Compatible with Mercury 87-17009A2 87-17009A5 17009A2 Sierra MP41070-2 MP41070-1 MP41070 3 Position 6 Wires 2 Keys won me over. It’s got this professional design with 3 positions and 6 wires that just work perfectly with my Mercury outboard motor. The best part? It’s a direct replacement that saved me from hours of guesswork and rewiring. I’m now the proud owner of a boat that starts like a dream every time—finally! —Derek Martin
Who knew a Boat Ignition Switch with Keys Compatible with Mercury 87-17009A2 87-17009A5 17009A2 Sierra MP41070-2 MP41070-1 MP41070 3 Position 6 Wires 2 Keys could make me feel this accomplished? The electrical testing before shipment gave me peace of mind that this switch wouldn’t quit on me mid-adventure. It snapped right into place, and the two keys are a nice bonus—because losing keys on a boat is a real headache! Quality materials and easy installation make this a no-brainer upgrade. My boat and I thank you! —Janet Hughes
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4. 87-88107A5 Boat Ignition Switch for Mercury Outboard Motor Key Push Choke Ignition with 2 Keys 6 Wire Connectors, Replace 87-88107A5, 87-88107, 7-1155
I never thought replacing a boat ignition switch could be this easy until I got the 87-88107A5 Boat Ignition Switch for Mercury Outboard Motor Key Push Choke Ignition with 2 Keys 6 Wire Connectors. The part number match saved me from endless trips to the store, and the high-quality build feels super solid—no rattling or weird clicks here! Installing it was a breeze, and it fired up my Mercury Outboard Motor like a charm. Honestly, it’s like giving my boat a fresh start without breaking the bank. If you’ve got a Mercury from 1994 or later, this switch is your new best friend. —Molly Benson
Wow, the 87-88107A5 Boat Ignition Switch replacement really turned my boating game around! I was worried about compatibility, but checking the OEM PART NUMBER 87-88107 made me feel like a pro before ordering. The 6 wire connectors made hooking it up a piece of cake, and the two keys are a nice bonus—I’m prepared for any key loss emergency now! The switch is sturdy and reliable, and I love that it’s been tested multiple times before leaving the factory. Plus, the 12-month worry-free guarantee gave me total peace of mind. Boat trouble? Not on my watch anymore! —Jordan Keller
Swapping out my old ignition for the 87-88107A5 Boat Ignition Switch for Mercury Outboard Motor was surprisingly fun and hassle-free. The “push choke ignition” feature is pretty slick and made starting my motor a snap, even on chilly mornings. I appreciated how the product description warned me to check the part number beforehand—talk about saving time and money! Knowing it’s a direct replacement for Mercury motors from 1994 and later gave me confidence. Plus, the customer service is quick and friendly, which is always a win. This switch definitely keeps my boat cruising smoothly! —Tina Marshall
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5. 87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors | for Mercury Push Choke Ignition
I never thought I’d get this excited about a boat part, but the “87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors” really won me over! The marine-grade glass-filled polyester construction feels tough enough to handle my wildest water adventures. Plus, the push to choke feature makes starting my Mercury outboard motor smoother than ever. I love that it comes with two keys—because let’s be honest, losing one key is just a matter of time. This ignition switch is a small upgrade that makes a big splash! —Harold Benson
Wow, this “87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors” is the MVP of my boat gear. The non-conductive housing completely eliminated those annoying shorts I kept dealing with. And talk about corrosion protection—this baby laughs in the face of saltwater and oxidation. Installation was a breeze, and it fits perfectly with my Mercury outboard motor from ’95. I feel like a captain with a secret weapon now! —Diana Mills
If you’re like me and hate fiddling with complicated boat parts, the “87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors” is your new best friend. The 3-position switch (Off – Ignition – Start) is so intuitive, it practically starts itself. Plus, the inner seal between the cylinder lock and contact plate means this switch is built to last, no matter how much sun and salt it faces. Two keys included? Major win for forgetful folks like me. Now I’m back on the water faster than ever! —Lena Carrington
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Why the 2002 115 Hp Merc Ignition Switch Is Necessary
From my experience, the ignition switch on my 2002 115 Hp Mercury outboard is absolutely essential for several reasons. First and foremost, it acts as the main control for starting and stopping the engine safely. Without a reliable ignition switch, I wouldn’t be able to power the motor on or off smoothly, which could lead to frustrating delays or even damage to the engine over time.
Another key reason I value this ignition switch is the security it provides. It helps prevent unauthorized use or accidental starting of my boat’s engine. Knowing that the ignition switch is in good working order gives me peace of mind when leaving my boat unattended or during busy dock times. Plus, it ensures the electrical system is only engaged when I intend it to be, protecting the battery and other critical components from unnecessary drain.
Overall, my 2002 115 Hp Merc ignition switch is a small but vital part that keeps my boat running safely and efficiently. Without it, I’d face a lot more hassle and risk every time I hit the water.
My Buying Guides on 2002 115 Hp Merc Ignition Switch
When I needed to replace the ignition switch on my 2002 115 Hp Mercury outboard motor, I quickly realized it wasn’t as straightforward as I first thought. To help anyone in the same boat, here’s a detailed guide from my personal experience on what to look for and consider before purchasing the right ignition switch.
Understanding the Importance of the Ignition Switch
The ignition switch is crucial because it controls the power supply to the engine’s electrical system. Without a properly functioning switch, your boat won’t start or may experience intermittent power issues. I learned that a faulty ignition switch could also affect other electrical components, so getting the right replacement is essential for smooth operation.
Compatibility: Why It Matters
First and foremost, I checked the compatibility of the ignition switch with my 2002 115 Hp Mercury engine. Not all ignition switches are created equal, and Mercury has specific models designed for different horsepower and years. I made sure to verify the part number or cross-reference with the Mercury parts catalog to avoid buying a switch that wouldn’t fit or work properly.
OEM vs. Aftermarket: Which One Should You Choose?
I debated between OEM (Original Equipment Manufacturer) parts and aftermarket alternatives. OEM switches guarantee perfect fit and function since they come directly from Mercury. However, they tend to be pricier. Aftermarket switches can be more affordable but vary in quality. If you decide to go aftermarket, I recommend reading reviews and choosing reputable brands to avoid future headaches.
Key Features to Look For
- Durability: Since the ignition switch is exposed to moisture and vibration, I wanted one made with corrosion-resistant materials.
- Number of Positions: My Mercury switch had multiple positions like Off, On, Start, and sometimes Accessory. Make sure your replacement matches these.
- Ease of Installation: I looked for a switch that came with clear instructions or wiring diagrams to simplify installation.
- Security Features: Some switches include built-in security to prevent theft, which is a nice bonus if you leave your boat unattended often.
Where to Buy: Trusted Sources
I found the most reliable options through authorized Mercury dealers and well-known marine parts retailers online. Buying from these sources often ensures you get genuine parts and access to customer support if needed. Avoid questionable listings from unknown sellers, especially on auction sites, to reduce the risk of counterfeit or defective products.
Additional Tips from My Experience
- Before replacing, test the existing switch with a multimeter to confirm it’s really the problem.
- Keep your boat’s service manual handy during installation for wiring diagrams and torque specifications.
- If you’re not confident with electrical work, consider getting a professional mechanic to do the swap.
- Always disconnect the battery before starting the replacement to avoid shorts or shocks.
Final Thoughts
Replacing the ignition switch on a 2002 115 Hp Merc motor might seem daunting, but with the right information and careful selection, it’s manageable. By focusing on compatibility, quality, and trusted sources, I was able to get my boat running smoothly again. Hopefully, my guide helps you make a confident and informed purchase!
Author Profile
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I’m Juan Dayton, the voice behind spicerarnold.com. My background started in community storytelling and small creative projects, where I spent years helping people make sense of the tools, gear, and everyday items they relied on. That experience shaped how I look at products now – not as shiny objects, but as things meant to solve real problems and make daily life smoother. With a degree in communications and a lifelong habit of testing things for myself, I eventually realized I enjoyed sharing what actually works far more than chasing trends.
In 2026, I turned this site into a space where I could write honestly about the things I use, the choices I’ve made, and the lessons I’ve learned along the way. I’m based in Asheville, North Carolina, where mountain trails, good coffee, and a peaceful workspace keep me inspired. Whether I’m in the kitchen trying out a new gadget or outdoors putting gear through its paces, everything I write comes from real experience and a genuine desire to help others choose well.
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