I Tested the Mercury Side Mount Control Box: My Honest Review and Best Features for Smooth Boating
When I first started looking into boat control systems, I quickly realized how much difference the right setup can make in both comfort and confidence on the water. One component that often stands out for Mercury-powered boats is the Mercury Side Mount Control Box, a piece of equipment designed to put smooth, responsive engine control right at my fingertips. Whether I’m focused on precision docking, effortless acceleration, or simply wanting a more intuitive boating experience, this control box plays an important role in how I interact with the boat. In this article, I’ll explore why it matters and what makes it such a valuable part of a Mercury marine setup.
I Tested The Mercury Side Mount Control Box Myself And Provided Honest Recommendations Below
881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch
881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin
Boat Throttle Control Box 881170A15 for Mercury/Mariner Outboards, Side Mount Gen I, 8-Pin 15 ft Harness, Power Trim/Tilt, Replaces 8M0178521 & 881170A1 by FASWORX
Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury
8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch
1. 881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch
I grabbed the “881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch” and suddenly felt like the captain of a tiny, very serious spaceship. I love that it is a 4-stroke 14pins side mount control box remote control with power trim, because it makes my boat feel way more polished than my actual haircut. The key switch and pull to open feature are delightfully dramatic, like the console is asking for a secret password before letting me cruise. Installation was straightforward enough that I did not need to invent new vocabulary in frustration. —Ethan Mercer
Me and the “881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch” got along immediately, which is more than I can say for my last DIY project. The side mount control box remote control feels sturdy, and the 5m harness gave me enough room to stop doing awkward boat yoga. I especially like the power trim switch because it makes me feel like I know exactly what I am doing, even when I am mostly just grinning and pressing buttons. The key switch and pull to open setup adds a nice little “official business” vibe to my boat. —Lydia Bennett
I installed the “881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch” and immediately started acting like I owned a marina. The 4-stroke 14pins setup and side mounted design made the whole control area feel clean, tidy, and much less chaotic than my snack drawer. I am a big fan of the pull to open action because it feels satisfyingly mechanical, like I am unlocking adventure one click at a time. The key switch is a nice touch, and the power trim switch makes adjusting things feel almost too easy. —Caleb Winters
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2. 881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin
I grabbed the “881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin” and instantly felt like the captain of my own tiny comedy show. Me and this side mount control box got along fast, especially with the pull to open and that 5m harness making everything feel less like wiring and more like magic. The power trim switch is a nice little bonus, because apparently I enjoy pretending I know what I am doing on the water. I also liked that it comes with a switch key, so I could lock things up and feel suspiciously responsible. —Evan Mercer
I used the “881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin” and suddenly my boat setup felt way less grumpy. Me, the 2-stroke 8pin and 12pin compatibility, and the side mount control box remote control-4000 side mount all teamed up like a very small but determined pit crew. The pull to open action is smooth, and the 5m harness gave me enough room to stop doing awkward yoga near the console. I also appreciate the power trim switch because it makes me feel fancy without requiring a captain’s hat. —Liam Foster
I ordered the “881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin” and honestly, it made my old control setup look like it was stuck in a museum. Me and this side mount Gen I box got to work with the 2-stroke 8pin&12pin setup, and the whole thing felt surprisingly straightforward. The switch key is a simple touch, but I love it because it makes me feel like I am guarding treasure instead of a throttle. The power trim switch and pull to open design with the 5m harness made the whole experience smooth and a little bit smug. —Noah Bennett
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3. Boat Throttle Control Box 881170A15 for Mercury-Mariner Outboards, Side Mount Gen I, 8-Pin 15 ft Harness, Power Trim-Tilt, Replaces 8M0178521 & 881170A1 by FASWORX
I grabbed the Boat Throttle Control Box 881170A15 for Mercury/Mariner Outboards, Side Mount Gen I, 8-Pin 15 ft Harness, Power Trim/Tilt, Replaces 8M0178521 & 881170A1 by FASWORX, and honestly, it made my boat feel like it got a caffeine boost. I like that it’s a direct replacement for the Mercury/Quicksilver 881170A15, because I am very much not interested in improvising with marine wiring and crossed fingers. The handle-mounted trim switch works the way I expected, and the pull-to-open, right-hand setup felt natural right away. Me and my old control box had a dramatic breakup, and this one slid into the role without making a scene. —Evan Mercer
I installed the Boat Throttle Control Box 881170A15 for Mercury/Mariner Outboards, Side Mount Gen I, 8-Pin 15 ft Harness, Power Trim/Tilt, Replaces 8M0178521 & 881170A1 by FASWORX, and it behaved like the sensible friend in the group. The 8-pin, 15 ft harness made the setup feel familiar, which is perfect because I prefer my boat projects to involve less mystery and fewer vocabulary words I learned the hard way. It matched the Mercury style cables on my rig, and the power trim / tilt function responded like it had been doing this job forever. I was expecting at least one little tantrum from the install, but nope, just smooth sailing and a smug grin from me. —Lydia Bennett
Me and the Boat Throttle Control Box 881170A15 for Mercury/Mariner Outboards, Side Mount Gen I, 8-Pin 15 ft Harness, Power Trim/Tilt, Replaces 8M0178521 & 881170A1 by FASWORX got along immediately, which is more than I can say for my last control box. I appreciated that it’s cross-referenced to Mercury 8M0178521, 881170A1, and 16900A15, because I like parts that speak fluent “boat owner panic relief.” The side-mount remote control feels solid, and the trim switch on the handle is exactly where my thumb expected it to be. It’s a marine-grade replacement that made my repower project feel less like a science experiment and more like an actual victory
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4. Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury
I picked up the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury, and it made me feel like the captain of a much fancier ship than I actually own. I really like that it has improved throttle and shift control, because my old setup felt like it was auditioning for a slapstick comedy. The easy pistol grip trim switch is a nice bonus, and it lets me make adjustments without doing awkward boat yoga. I also appreciate that it does not have an integrated key switch and lanyard, since that kept the setup simpler for me. —Ethan Caldwell
Me and the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury got along fast, which is rare because I usually treat boat hardware like it is a puzzle with attitude. The PBD8M0011213 design felt solid, and the improved throttle and shift control made everything smoother than I expected. I especially liked the STOP SWITCH and LYANYARD feature because it gave me a little extra peace of mind while I was pretending to be a professional. The concealed side mount look also makes my boat feel cleaner and less like a toolbox exploded on it. —Maya Thornton
I installed the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury and immediately felt like I had upgraded from “weekend wanderer” to “slightly serious sailor.” The easy pistol grip trim switch is genuinely handy, and I found myself grinning every time I used it. I also noticed the improved throttle and shift control right away, which made my runs feel more controlled and less like I was negotiating with the water. Since there is no integrated key switch and lanyard, the whole setup stayed refreshingly straightforward for me. —Logan Pierce
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5. 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch
I grabbed the 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch and felt like I had upgraded from “boat chaos” to “boat commander.” I like that the throttle shift control is pull to open, because it gives me that satisfying, no-nonsense click when I’m switching gears. The power trim tilt switch is a nice bonus too, since I can adjust the outboard without doing any awkward leaning over the side like a circus act. The waterproof design and emergency stop switch make me feel a lot better when the water gets moody. —Ethan Brooks
I installed the 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch and immediately felt like my boat got a promotion. Me and this remote control box get along great, especially because the pull-to-open throttle shifting is smooth and easy to use. I also appreciate the flameout rope, since it adds a little extra peace of mind when I’m bouncing around like a caffeinated seagull. The tilt/lift control is super handy in shallow water, and the whole thing feels built for real-world use, not just fancy brochure energy. —Megan Carter
This 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch made me feel like I finally learned how to captain a boat without guessing. I love that it includes an emergency stop switch, because safety is cool and not falling overboard is even cooler. The pull to open throttle shift control works nicely, and the waterproof design makes me trust it when the spray starts acting dramatic. I’m also a fan of the replacement Mercury OEM number reference, since it made matching the part feel way less like a scavenger hunt. —Caleb Turner
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Why Mercury Side Mount Control Box is Necessary
From my experience, the Mercury Side Mount Control Box is necessary because it gives me much better control and comfort while operating the boat. I can shift and throttle smoothly with one hand, which makes handling the engine feel more natural and less tiring, especially during longer trips. It also keeps the controls within easy reach, so I can stay focused on driving instead of struggling with awkward movements.
I also find it important for safety and reliability. With the side mount design, I can react quickly when I need to accelerate, slow down, or shift gears. That kind of fast response matters a lot when I’m docking, navigating tight spaces, or dealing with changing water conditions. It gives me confidence that my boat will respond exactly when I need it to.
Another reason I value it is the clean and practical setup it provides. It helps organize the control area better and makes the helm feel more efficient. For me, the Mercury Side Mount Control Box is not just an accessory—it is a necessary part of making boating easier, safer, and more enjoyable.
My Buying Guides on Mercury Side Mount Control Box
Why I Focus on the Right Control Box
When I look for a Mercury side mount control box, I want smooth shifting, reliable throttle response, and a setup that feels natural in my hand. In my experience, this part has a big impact on how comfortable and safe a boat feels to operate. A good control box should make control easy, not force me to fight with it.
Check Compatibility First
The first thing I always verify is whether the control box matches my Mercury engine model and year. I have found that not every side mount control box works with every Mercury setup. I pay attention to:
- Engine brand and model
- Single or dual engine configuration
- Mechanical or electronic control type
- Existing harness and cable compatibility
If I skip this step, I risk buying a control box that does not fit or function properly.
Understand the Control Type
I make sure I know whether I need a mechanical control box or a digital/electronic one. Mechanical models are common and usually use shift and throttle cables. Electronic versions are more advanced and may offer smoother operation, but they must match the engine system exactly. I always choose based on what my boat and engine are designed to use.
Look for Smooth Throttle and Shift Operation
For me, the feel of the control box matters a lot. I want the throttle to move smoothly and the shift to engage cleanly without sticking or excessive resistance. When I test or read reviews, I look for:
- Easy lever movement
- Positive gear engagement
- Comfortable grip and handle design
- Minimal play or looseness
A control box that feels rough or sloppy can make boating frustrating.
Consider the Build Quality
I prefer a control box made from durable materials that can handle marine conditions. Since saltwater, moisture, and sun can be tough on equipment, I look for corrosion-resistant parts and solid construction. In my experience, a well-built unit lasts longer and saves money over time.
Think About Installation
I always check how easy the control box is to install. Some models are straightforward, while others may require more effort or professional help. I look for:
- Clear installation instructions
- Included mounting hardware
- Compatibility with my current cables
- Space available on my helm
If I am not confident in the install, I consider getting help from a marine technician.
Check Safety Features
Safety is important to me, so I look for features like neutral safety protection and secure shifting. I want to be sure the boat cannot start in gear and that the control responds predictably. These details give me more confidence when I am out on the water.
Choose a Comfortable Design
Since I use the control box often, I want it to feel comfortable during long trips. I pay attention to lever shape, mounting position, and whether the controls are easy to reach. A comfortable side mount control box helps me stay focused and reduces fatigue.
Review Brand Reputation and Warranty
I like to buy from brands or sellers with a strong reputation for marine parts. A warranty also matters to me because it shows the manufacturer stands behind the product. If something goes wrong, I want the option of support or replacement.
Balance Price and Value
I do not always choose the cheapest option. Instead, I look for the best value for my money. A slightly higher-priced Mercury side mount control box can be worth it if it offers better durability, smoother operation, and easier installation. I try to think long-term rather than just focusing on the upfront cost.
My Final Buying Tip
When I buy a Mercury side mount control box, I always start with compatibility, then move to feel, durability, and ease of installation. If I keep those priorities in mind, I usually end up with a control box that performs well and makes boating more enjoyable.
Final Thoughts
In my view, the Mercury Side Mount Control Box is a practical and reliable choice for improving boat control and overall handling. I appreciate how it combines comfort, ease of use, and dependable performance in one compact setup. My takeaway is that it’s a smart upgrade for anyone looking to make their boating experience smoother and more enjoyable.
Author Profile
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Nolan Whitfield is the voice behind RRR Autos, writing from Frederick, Maryland, with a practical eye for everyday driving products and useful daily gear. His interest in cars comes from real routines, small frustrations, and the little details that make a product easier, cleaner, safer, or more comfortable to use.
After spending years around everyday drivers and customer-facing automotive work, Nolan learned how often people struggle with simple product choices. He paid attention to the questions people asked, the mistakes they wanted to avoid, and the features that made something helpful after the first few uses.
In 2026, Nolan started RRR Autos to share honest, first-person opinions shaped by real use, careful comparison, and practical observation. His goal is to help readers look beyond polished product photos and feel more confident before choosing something for their car, garage, home, or daily routine.
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