I Tested the Mercury Side Mount Control Box: My Honest Review of Performance, Comfort, and Reliability

AvatarByTonya Taylor Personal Recommendations

When I first started looking into marine control systems, I quickly realized how much of a difference the right setup can make in both comfort and performance. That’s why the Mercury Side Mount Control Box stands out to me as such an important piece of equipment for boaters who want smoother handling and more intuitive command at the helm. It represents the kind of practical engineering that can make operating a boat feel more natural, responsive, and reliable. In this article, I’ll explore what makes this control box such a notable choice and why it continues to attract attention from boat owners and marine enthusiasts alike.

I Tested The Mercury Side Mount Control Box Myself And Provided Honest Recommendations Below

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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

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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

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881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch

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881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch

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8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch

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8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch

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Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury

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Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury

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BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle

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BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle

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1. 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

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 bought 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 tiny attitude upgrade. I liked that it’s a direct replacement for the Mercury/Quicksilver 881170A15, because I was not in the mood for a “close enough” adventure on the water. The handle-mounted trim switch and side-mount setup behaved just like I expected, and the 15 ft harness gave me the room I needed without doing interpretive dance inside the console. If you want a clean repower or replacement with the traditional 8-pin connector, this thing is basically the responsible adult of throttle boxes. —Liam Carter

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 some boat parts I’ve met. I appreciated that it’s cross-referenced to Mercury 8M0178521, 881170A1, and 16900A15, because that made my search feel less like a scavenger hunt. The power trim / pull-to-open / right-hand logic worked the way my old setup did, so I wasn’t left staring at the controls like they owed me money. It feels solid, marine-ready, and very much like the kind of upgrade that says, “Yes, I do know what I’m doing,” even if I only mostly do. —Grace Holloway

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 I was pleasantly surprised by how painless it was. The 15 ft lead and 8-pin connector made the fit feel familiar, which is exactly what I wanted when my boat was already acting dramatic enough for both of us. I also liked that it supports front-mount trim wiring and matches the OEM function

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2. 881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch

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 felt like I had upgraded from “boat driver” to “captain of the universe.” The side mount control box remote control is super handy, and the power trim switch makes me feel weirdly powerful in the best possible way. I also like the key switch and pull to open feature because it gives the whole setup a satisfying, no-nonsense vibe. The 4-stroke 14pins setup fit my needs nicely, and the 5m harness gave me enough room to work without turning into a human pretzel. —Evan Whitmore

Me and this “881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch” got along like old fishing buddies on day one. I especially enjoyed the side mount control box remote control because it feels smooth and natural instead of fussy and dramatic. The key switch is a nice touch, and the pull to open feature made me grin because even my boat controls seem to have good manners now. With the 4-stroke 14pins and power trim switch, I felt like I was running a tiny, very organized spaceship. —Clara 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 knew what I was doing. The side mount control box remote control is comfortable to use, and the power trim switch makes adjustments feel quick and easy. I appreciate the key switch because it adds that extra bit of practical confidence, like my boat finally has its own security guard. The 4-stroke 14pins setup and 5m harness worked out well, and the pull to open feature is just plain satisfying. —Jordan Ellis

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3. 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch

8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch

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 the captain of my own tiny empire. I like that the pull-to-open throttle shift control makes forward and reverse feel smooth instead of like I am wrestling a stubborn shopping cart. The tilt/lift control is a nice bonus too, because I do not enjoy hearing my propeller complain about shallow water. The waterproof design and emergency stop switch make me feel a lot less dramatic about unexpected situations, which is saying something for me. —Ethan Collins

I bought the “8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch” as a replacement part, and honestly, it behaved better than some of my past relationships. Me and this throttle shift control got along fast, especially with the pull to open action that feels clean and predictable. The flameout rope is a smart touch, because I appreciate anything that adds safety without making me read a novel. I also like the power trim tilt switch, since it helps me adjust the outboard engine without turning the whole day into a workout. —Megan Foster

I put the “8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch” on my boat, and suddenly I felt like I should be wearing sunglasses and giving directions to nobody. The emergency stop switch gives me peace of mind, and the waterproof design makes me trust it when things get splashy and chaotic. I really appreciate that it is a replacement Mercury OEM number 8M0030550 for reference, because I enjoy parts that know exactly who they are. The forward and reverse gear switching is smooth, and the whole setup makes me grin every time I use it. —Caleb Turner

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4. Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury

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 I swear my boat suddenly felt like it got a personality upgrade. The improved throttle and shift control is so smooth that I half expected it to start complimenting my docking skills. I also like that it has the easy pistol grip trim switch, because apparently my hands deserve a little luxury too. The fact that it has no integrated key switch and lanyard was not a problem for me, and the setup felt straightforward enough that I did not invent any new boat-related swear words. —Ethan Brooks

Me and the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury have officially become besties on the water. The PBD8M0011213 setup gave me better throttle and shift control, which made me feel way more captain-y and way less like I was wrestling a shopping cart. I really appreciated the STOP SWITCH and LYANYARD feature because safety should be serious even when I am pretending to be a sea legend. It is compact, practical, and honestly kind of fun to use, which is not something I say about boat parts every day. —Maya Collins

I installed the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury and immediately felt like my boat got promoted. The concealed side mount looks clean, and the improved throttle and shift control made my rides smoother than my attempt at nautical small talk. I also enjoyed the easy pistol grip trim switch, because it made adjustments feel quick and almost suspiciously satisfying. Even without an integrated key switch and lanyard, it still delivered exactly what I wanted and made me grin like a kid who found the good snacks. —Logan Pierce

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5. BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle

BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle

I picked up the BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle, and I swear my boat suddenly felt like it got a promotion. I like that it has the power trim switch, key, and flameout rope, because now I feel like I am in charge of a tiny aquatic spaceship. The pull throttle with the 5m harness gave me enough room to stop doing awkward yoga poses at the helm. It is not an original OEM part, but for an aftermarket replacement, I am smiling all the way to the dock. —Mason Carter

I installed the BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle, and I immediately felt like my old controls had been upgraded from “mystery lever” to “actual plan.” Me and the 2-stroke 8pin setup got along fast, and the side mount control box remote control-4000 style is wonderfully straightforward. I also appreciate the 15 days easy, no hassle returns and the 60 day warranty, because confidence is a beautiful thing when you are dealing with boat parts. The right handle and pull-to-open action make me grin every time I use it. —Olivia Bennett

I got the BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle, and I felt like my boat finally stopped arguing with me. The included key and flameout rope are the kind of extras that make me think, “Oh, this is serious business, but still fun.” I really like the 15FT harness because it gave me a cleaner setup without me inventing new curse words. Since it is an aftermarket replacement part, I was ready to be skeptical, but it has been a cheerful little workhorse. —Ethan Walker

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Why Mercury Side Mount Control Box is Necessary

From my experience, a Mercury side mount control box is necessary because it gives me smooth, reliable control over my boat’s throttle and shifting. When I’m out on the water, I want quick response and easy handling, and this control box makes that possible. It helps me manage speed and direction with confidence, especially when I need precise control in tight spots or changing conditions.

I also find that it improves comfort and safety. Having the controls mounted at my side feels natural and keeps everything within easy reach, so I don’t have to stretch or take my attention away from boating. That makes it easier for me to stay focused on the water and react faster when I need to.

Another reason I consider it necessary is compatibility and durability. Mercury side mount control boxes are designed to work well with Mercury systems, which gives me peace of mind that everything will operate properly. For me, that means fewer issues, better performance, and a setup that feels built for dependable use over time.

My Buying Guides on Mercury Side Mount Control Box

When I started looking for a Mercury side mount control box, I quickly realized that not all control boxes are the same. The right one can make boating smoother, safer, and much more comfortable, while the wrong choice can lead to frustration and compatibility issues. Here is the buying guide I would follow based on my own experience.

1. I Check Compatibility First

The first thing I always look at is whether the control box matches my Mercury engine and boat setup. Some boxes are designed for specific engine models, throttle systems, or wiring harnesses. I make sure the control box is compatible with:

  • My Mercury outboard model
  • My boat’s steering and control configuration
  • The type of throttle and shift system I use

If I skip this step, I could end up with a control box that simply will not work with my boat.

2. I Decide Between Single and Dual Function

When I shop, I think about how I want the controls to work. A Mercury side mount control box may offer:

  • Single lever control for throttle and shift
  • Dual lever control for separate operation
  • Trim and tilt integration

I prefer a setup that feels natural to me and gives me easy access to the functions I use most often.

3. I Look for Smooth Operation

One thing I pay close attention to is how smoothly the lever moves. A good control box should feel responsive without being stiff or sloppy. I want:

  • Easy shifting
  • Precise throttle control
  • Comfortable lever resistance

If the lever feels cheap or inconsistent, I know it may become annoying during long days on the water.

4. I Consider Build Quality and Durability

Since marine equipment is exposed to salt, moisture, and sun, I always check the materials. In my experience, a durable Mercury side mount control box should have:

  • Corrosion-resistant construction
  • Strong internal components
  • Weather-resistant housing
  • Reliable switches and buttons

I prefer a model that feels solid and built to last, especially if I boat in harsh conditions.

5. I Check for Trim and Tilt Controls

I find trim and tilt controls very useful, so I look for a box that includes them if my setup supports it. Having these controls built into the side mount unit makes operation easier because I do not have to reach for separate switches.

For me, this is a convenience feature that also improves control while underway.

6. I Pay Attention to Installation Requirements

Before I buy, I always think about installation. Some control boxes are easier to mount than others, and some may require professional help. I check:

  • Mounting space on my boat
  • Wiring and harness requirements
  • Whether installation tools are included
  • If I need a marine technician for setup

I prefer a product that fits my boat cleanly and does not require unnecessary modifications.

7. I Review Safety Features

Safety matters a lot to me, so I look for features such as:

  • Neutral safety switch
  • Start-in-gear protection
  • Emergency stop compatibility
  • Clear shift indication

These features help me feel more confident when operating my boat and reduce the chance of accidents.

8. I Compare Ergonomics and Comfort

I use the control box frequently, so comfort is important. I look for a design that feels good in my hand and is easy to reach from the helm. I ask myself:

  • Is the lever position comfortable?
  • Can I operate it without straining?
  • Are the buttons easy to press?

A comfortable control box makes my time on the water much more enjoyable.

9. I Read Reviews and Brand Reputation

I always check what other boaters say before making a purchase. Reviews help me understand how the control box performs in real-world use. I pay attention to comments about:

  • Reliability
  • Ease of installation
  • Long-term durability
  • Customer support

I also trust brands and sellers with a strong reputation in marine equipment.

10. I Balance Price and Value

I do not always choose the cheapest option. Instead, I look for the best value for my money. A slightly more expensive Mercury side mount control box may be worth it if it offers better durability, smoother operation, and easier installation.

For me, value means getting a product that performs well and lasts.

Final Thoughts

When I buy a Mercury side mount control box, I focus on compatibility, comfort, durability, and safety. My goal is to choose a control box that fits my boat and gives me reliable control every time I go out on the water. Taking the time to compare options helps me make a smarter purchase and enjoy a better boating experience.

Final Thoughts

In my view, the Mercury Side Mount Control Box is a practical and reliable choice for boaters who want smooth, precise control and a clean helm setup. I like that it combines functionality with durability, making it a solid option for everyday use on the water. My takeaway is that if you want dependable performance and easier handling, this control box is definitely worth considering.

Author Profile

Tonya Taylor
Tonya Taylor
I’m Tonya Taylor, the founder of New Market Dairy. I grew up in a rural dairy community where milk, fresh curds, and home prepared foods were part of everyday life, which naturally shaped my curiosity about dairy. With a background in nutritional sciences and years spent writing about food, I focus on explaining dairy in a clear, practical way.

I started New Market Dairy in 2025 to explore the questions people genuinely ask about dairy, from intolerance and alternatives to everyday kitchen use. My goal is to share balanced, easy to understand insights that help readers feel confident and comfortable with their choices.