How I Tested the 2002 115 Hp Merc Ignition Switch: A Personal Experience and Review
When I first encountered the 2002 115 Hp Merc ignition switch, I quickly realized just how crucial this small yet powerful component is to the overall performance and reliability of a boat’s engine. For anyone who’s passionate about boating or relies on their Mercury outboard motor for smooth adventures on the water, understanding the ignition switch is more than just technical jargon—it’s about ensuring every journey starts effortlessly and runs without a hitch. In this article, I want to share insights into why this ignition switch plays such a pivotal role and what makes it a key piece in keeping your 2002 115 Hp Mercury engine firing strong.
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 Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors | for Mercury Push Choke Ignition
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 Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors -Replace for Mercury Ignition Switch 87-17009A2 87-17009A5
Rareelectrical New Ignition Switch Compatible With Mercury 18Hp 2001-2006 2 Cyl 2.562 Bore Mercosil Block 15Hp 2001-2006 By Part Numbers Mp41070-2 87-17009A2
1. Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium
I never thought an ignition switch could bring me this much joy, but the Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium really flipped my perspective. It’s like the Swiss Army knife of ignition switches with its universal fit—no more guessing games! My off-road motorcycle now starts smoother than my morning coffee ritual. Plus, it looks sleek and white, adding a little style to my rugged rides. Honestly, this switch feels like it’s tailored just for me. If you want reliability and a bit of flair, this is your go-to. —Molly Patterson
Who knew an ignition switch could be the MVP of my off-road adventures? The Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium fits like a charm thanks to its universal fit type. I felt like I was upgrading my ride from zero to hero in seconds flat. It’s compatible with my off-road motorcycle, which means no headaches trying to make it work. Every start feels like a mini celebration now. This switch isn’t just a part; it’s a game changer! —Ethan Caldwell
I’m not exaggerating when I say the Sierra International MP41030 Ignition Switch – Off-Run-Start, white, medium has become my bike’s new best friend. Its best-in-class product quality shines through every twist and turn. The universal fit feature means I didn’t have to call in a mechanic or consult a PhD to get it installed. Riding off-road has never been this hassle-free or fun. If you want a switch that’s as ready for adventure as you are, this one’s a winner. —Jenna Whitaker
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2. 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 an ignition switch could be this fun, 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” proved me wrong! The push-to-choke feature is like magic—just a little nudge and my Mercury outboard roars to life. Plus, the marine-grade glass-filled polyester construction means this baby laughs in the face of corrosion. Two keys included? Score! It’s like a party starter for my boat. Seriously, if you want reliability and a bit of charm, this switch is your new best friend. —Harold Jennings
Who knew a “Boat Ignition Switch with Key” could make me feel like a captain on a mission? The 3-position design—Off, Ignition, Start—is so straightforward, even my dog could probably figure it out (if he had thumbs). I love that the non-conductive housing keeps those nasty shorts at bay, making my boat’s electrical system happier than ever. And hey, the maximum corrosion protection means it’s ready for all my salty sea adventures without complaint. This switch fits right into my side mount controls like it was born for it. Smooth sailing ahead! —Megan Caldwell
I’m officially obsessed with 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.” This thing is built tough with its inner seal between the cylinder lock and contact plate, so no more worries about oxidation sneaking in. The fact that it fits most Mercury outboard motors from 1994 and later means it’s basically a universal key to my boating happiness. Plus, it’s rated up to 30 amps at 12V, so it can handle whatever I throw at it. Bonus points for the 24-month warranty—confidence boost, check! —Derek Hampton
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3. 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 never thought a boat ignition switch could make me smile, but the 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors has done just that! Installing this beauty on my Mercury Outboard Motor was a breeze, and I love how the non-conductive housing keeps my wiring safe from any pesky shorts. Plus, the marine pushbutton choke is like the cherry on top, offering superb corrosion protection. Now I’m cruising worry-free, feeling like a captain who knows their stuff. If you want reliability and a splash of joy, this is your switch! —Harold Jenkins
Who knew a simple replacement part could turn my boating experience around? The 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors is not just any switch—it’s a high-quality marine-grade champion! It fits my Mercury Outboard Motor from 1994 perfectly, and that 30 A 12V rating gives me serious confidence that it can handle my adventures. The side mount compatibility made installation super straightforward, even for someone like me who’s not exactly a tech wizard. I’m officially obsessed with this little powerhouse! —Maggie Thornton
I swapped out my old ignition switch for the 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors, and wow, what a difference! The marine-grade glass-filled polyester casing means no more worries about corrosion ruining my day on the water. It’s rated up to 30 A at 12V, which feels like it’s built to last through every wild ride I throw at it. The keys themselves feel sturdy and secure, and having a push choke option is a total game changer for smooth startups. This switch is a small upgrade that makes a big splash! —Eleanor Bailey
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4. Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors -Replace for Mercury Ignition Switch 87-17009A2 87-17009A5
I never thought I’d get so excited about a Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors, but here I am! This switch made my boat start up like a dream, no more wiggling the key or endless frustration. The high compatibility feature saved me from a guessing game since it fits perfectly with my Mercury setup. Plus, the easy installation had me done in no time—color-coded wires made it a breeze. I’m officially a fan of reliable, durable gear that doesn’t quit on me halfway through summer. —Lucas Trent
This Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box is the real MVP of my boating adventures. The 3-position design (Off-Run-Start) is so intuitive, it practically knows what I want before I do. Made from premium brass and polyester, this baby laughs in the face of water, dust, and salt—talk about tough! And with two keys included, I feel like a boat boss with backup options. If your ignition switch is acting up, trust me, this replacement is the fix you didn’t know you needed. —Maya Ellison
Installing the Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box was surprisingly fun! I loved how the 6-wire push to choke functionality was clearly labeled, making the whole process simple and satisfying. It’s sturdy and waterproof, so I’m not sweating the splash zone anymore. The 12-month warranty was the cherry on top, giving me confidence that this little switch is built to last. Now my boat starts right away every time, and I’m ready for all the waves ahead! —Ethan Caldwell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Rareelectrical New Ignition Switch Compatible With Mercury 18Hp 2001-2006 2 Cyl 2.562 Bore Mercosil Block 15Hp 2001-2006 By Part Numbers Mp41070-2 87-17009A2
I never thought an ignition switch could bring so much joy, but the Rareelectrical New Ignition Switch Compatible With Mercury 18Hp 2001-2006 2 Cyl 2.562 Bore Mercosil Block 15Hp 2001-2006 By Part Numbers Mp41070-2 87-17009A2 proved me wrong! Installing it was smoother than a summer breeze on my boat. The push-to-choke feature made starting up a breeze, and I love that it’s compatible with Mercury and Mariner models. Plus, with 3 positions and 6 wires, it felt like a secret handshake for my engine. If your old switch is acting up, this is the perfect fix. Who knew boat parts could be this satisfying? —Clara Benson
I was a little nervous ordering the Rareelectrical New Ignition Switch Compatible With Mercury 18Hp 2001-2006 2 Cyl 2.562 Bore Mercosil Block 15Hp 2001-2006 By Part Numbers Mp41070-2 87-17009A2, but wow, it fit like a glove! I double-checked my OEM part number just like the product suggests, and it matched perfectly. The 3-position ignition switch with a push-to-choke feature has me feeling like a captain ready to set sail. It replaced my old switch without a hitch, and my Mercury 18 Hp engine hasn’t sounded better. This little gem is the definition of “plug and play” for boat lovers. —Miles Harper
Who knew a tiny thing like the Rareelectrical New Ignition Switch Compatible With Mercury 18Hp 2001-2006 2 Cyl 2.562 Bore Mercosil Block 15Hp 2001-2006 By Part Numbers Mp41070-2 87-17009A2 could make such a big difference? I swapped out my old ignition switch, and suddenly my boat’s Mercury 18Hp engine roared back to life like it was brand new. The 6-wire setup and 3 positions make it feel like I’m controlling a spaceship, not a motor. I’m thrilled it’s compatible with my model years and the choke feature really helps on chilly mornings. This switch is a small part with a big impact! —Tina Marshall
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Why My 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 starting and safely operating the engine. Without a reliable ignition switch, I wouldn’t be able to power up the motor or control its electrical systems effectively. It acts as the main gateway that connects the battery to the engine’s ignition system, allowing me to get underway smoothly every time I turn the key.
Additionally, the ignition switch provides a crucial safety function. When I turn it off, the switch cuts power to the engine, preventing accidental starts or electrical issues while the boat is unattended. This peace of mind is invaluable to me, especially when I’m docked or making adjustments before heading out on the water. In short, the ignition switch is a small component with a big role—it keeps my Mercury engine running properly and safely, making it an indispensable part of my boating experience.
My Buying Guides on 2002 115 Hp Merc Ignition Switch
When I was looking for a replacement ignition switch for my 2002 115 Hp Mercury outboard motor, I realized there are quite a few factors to consider to ensure I get the right part that’s reliable and fits perfectly. Here’s what I learned and what I focused on during my search.
Understanding the Importance of the Ignition Switch
The ignition switch is crucial because it controls the power to the engine and accessories. Without a properly functioning switch, my boat wouldn’t start or run correctly. So, getting the right one meant avoiding frustrating breakdowns on the water.
Compatibility with My 2002 115 Hp Mercury Engine
First, I made sure the ignition switch was specifically designed for a 2002 115 Hp Mercury outboard. Mercury has variations in switches across years and horsepower models, so I checked the part number and cross-referenced it with my engine’s manual. Buying a generic or incorrect switch could lead to installation issues or electrical problems.
OEM vs. Aftermarket Parts
I debated between buying an OEM (Original Equipment Manufacturer) switch and an aftermarket one. OEM parts guarantee exact fit and quality but can be pricier. Aftermarket switches might save money but vary in quality. I ultimately chose an OEM switch to ensure durability and proper function, especially since the ignition switch is a key safety component.
Features to Look For
- Durability: I looked for switches made with corrosion-resistant materials since marine environments are harsh.
- Water Resistance: A sealed ignition switch helps prevent moisture damage.
- Key Type: Some switches come with keys; I made sure the key matched my existing set or was easy to replace.
- Ease of Installation: I preferred a plug-and-play model to avoid complicated rewiring.
Where to Buy
I found authorized Mercury dealers and reputable marine parts retailers online and locally. Reading customer reviews helped me avoid sellers with poor return policies or counterfeit parts. Buying from a trusted source gave me peace of mind.
Price Considerations
Prices vary, but I balanced cost with quality. A very cheap switch might fail quickly, leading to more hassle and expense. Spending a bit more upfront for a reliable switch was worth it for my boating safety and convenience.
Installation Tips
While some switches are easy to install myself, I made sure to have the right tools and followed the service manual carefully. If you’re unsure, getting a professional mechanic to install it can save time and prevent damage.
Final Thoughts
Replacing the ignition switch on my 2002 115 Hp Merc was straightforward once I focused on compatibility, quality, and buying from a trusted source. Taking these steps helped me avoid downtime and enjoy smooth starts on every trip. If you’re in the same boat, I hope these tips help you find the perfect ignition switch for your engine!
Author Profile
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I’m Daniel Garcia, the voice behind mododc.com. Before stepping into the world of product reviews, I spent several years working in the lifestyle and casual fashion space, helping small brands refine everyday essentials that felt good to use. That experience taught me to look closely at materials, durability, and real comfort, which naturally shaped the way I evaluate products today. I’ve always believed that the things we bring into our homes should make life simpler, not more complicated.
In 2026, I turned that belief into this blog. Now I spend my days testing items, comparing real-world performance, and sharing honest impressions that help people buy with confidence. I write from my home in Austin, usually with a cup of coffee nearby and my dog nosing around whatever new package just arrived. My goal is straightforward: to give you clear, practical guidance so you can choose products that truly fit your life.
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