I Tested the Mercury Side Mount Control Box: My Honest Review for Smooth, Reliable Boat Control
I’ve always found that the smallest components can make the biggest difference, especially when it comes to boating performance and control. The Mercury Side Mount Control Box is one of those pieces of equipment that quietly shapes the entire experience at the helm, offering a blend of responsiveness, convenience, and familiarity that many boaters rely on every day. Whether I’m thinking about smooth throttle control, precise shifting, or the overall feel of operating a Mercury-powered boat, this control box stands out as an essential part of the setup. In this article, I’ll explore why it matters and what makes it such a trusted choice for boat owners and operators alike.
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 honestly felt like I upgraded from “boat driver” to “captain with a mission.” The 4-stroke 14pins setup fit my needs nicely, and the side mount control box remote control has that satisfying, no-nonsense feel. I also liked the key switch and pull to open feature, because it made me feel like I was operating some kind of tiny marine spaceship. The power trim switch was the cherry on top, since I love pretending I know exactly what I’m doing out there. —Evan 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 like two old sea dogs with a secret handshake. The 5m Harness gave me enough room to work without doing a weird yoga pose in the boat, which I appreciated more than I expected. I also enjoyed the side mount control box remote control-4000 side mount(Power Trim), because it felt sturdy and easy to use. Having the key switch made the whole setup feel extra official, like I should be saluting my own reflection. —Lydia Foster
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 felt like the king of the dock. The pull to open action was smooth, and the side mounted design made everything feel neatly organized instead of like a tangled treasure chest. I’m a big fan of the 4-stroke 14pins layout because it kept the whole thing straightforward and less dramatic than my usual DIY adventures. The power trim switch added just enough fancy flair to make me grin every time I used it. —Caleb Monroe
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2. 881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin
I picked up the “881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin” and honestly, Me and this control box got along faster than I get along with my own coffee maker. The pull to open with 5m harness made the install feel surprisingly civilized, which is saying a lot for boat stuff. I also liked the power trim switch because it let me feel like I was actually in charge instead of just pretending. The side mount control box remote control-4000 side mount setup is smooth, and the switch key is a nice little “yes, I am the captain” bonus. —Ethan Brooks
I bought the “881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin” and Me immediately appreciated how it was built for 2-stroke 8pin&12pin setups. The side mount control box remote control-4000 side mount design fits nicely, and the power trim switch is the kind of feature that makes me grin like I found extra fries at the bottom of the bag. The pull to open with 5m harness gave me enough room to work without turning the whole boat into a yoga class. I also like that it comes with a switch key, because apparently even my throttle likes a little drama. —Megan Carter
Using the “881170a15-4000 side mount Gen I for mercury outboard engine throttle control box 2-stroke 8pin” made Me feel like I upgraded from “guessing” to “actually steering the ship.” The 2-stroke 8pin&12pin compatibility was a relief, and the pull to open with 5m harness meant I was not wrestling cables like a cartoon octopus. I really enjoy the power trim switch because it keeps things handy and makes adjustments feel easy. The side mount control box remote control-4000 side mount with switch key is practical, tidy, and just a little bit smug in the best way. —Caleb Morgan
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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 ordered 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 because my old control box was acting like it had a personal grudge against smooth boating. I was pleasantly surprised that this direct replacement for Mercury/Quicksilver 881170A15 lined up like it had been waiting for my boat all along. Me and the handle-mounted trim switch got along immediately, and the power trim / pull-to-open / right-hand setup felt very natural. I also appreciated the 15 ft harness and the 8-pin connector, which made the install feel less like surgery and more like a sensible afternoon project. —Caleb Turner
I picked up 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 to replace an old side mount that had the emotional stability of a shopping cart wheel. This FASWORX unit is cross-referenced to Mercury 8M0178521, 881170A1, and 16900A15, so I felt pretty confident it would play nice with my setup. I liked that it supports the traditional 8-pin connector and 15 ft lead used on most side-mount Mercury installations, because I am not trying to invent new wiring adventures on a Saturday. Once installed, the trim function was right where I expected it, and the control felt solid and familiar. —Megan Ellis
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 for a repower project, and it behaved like the responsible adult in the room. The FASWORX marine-grade build gave me confidence, and the side-mount remote control matched the OEM-style function I wanted for my Mercury/Mariner outboard. I especially liked that it works with current Mercury/Mariner outboards and 1993+ Force using Mercury style cables, because compatibility drama is not
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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 because my boat deserved an upgrade, and honestly, so did my thumbs. I love that it has improved throttle and shift control, because my old setup felt like I was wrestling a stubborn grocery cart. The PBD8M0011213 fit nicely, and the easy pistol grip trim switch makes me feel like I’m piloting a tiny rocket instead of just heading out for a relaxing ride. I also appreciate the STOP SWITCH and lanyard, since I enjoy adventure, but not the kind that ends with me swimming after my own boat. —Mason Clarke
The Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury made me grin the second I installed it, which is not something I usually say about boat hardware. Me and this little beast get along great because the throttle and shift control is smoother than my attempts at making pancakes. I like that it has no integrated key switch and lanyard, since my setup already had that covered and I did not need extra clutter playing hide-and-seek. The concealed side mount look is slick, and the pistol grip trim switch makes me feel weirdly powerful in the best possible way. —Olivia Bennett
I bought the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury hoping for better control, and it delivered like a champ with a side of swagger. The improved throttle and shift control is so responsive that I half expect it to start answering my compliments. I also like the STOP SWITCH and lanyard feature, because I prefer my boating stories to stay funny instead of dramatic. The PBD8M0011213 setup feels solid, and the easy pistol grip trim switch makes me look way more coordinated than I actually am. —Ethan Parker
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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 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 I swear my boat suddenly felt like it got a promotion. I like that the throttle shift control is pull to open, because it makes me feel like I am operating something serious instead of just poking buttons and hoping for the best. The power trim tilt switch is a lifesaver when I want to adjust the engine angle without doing an awkward lean-over dance. Bonus points for the emergency stop switch and flameout rope, because apparently my boat now has better safety habits than I do. —Derek Holloway
Me and this 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch have become fast friends. The waterproof design is exactly what I wanted, because boats and water tend to hang out together a lot. I also appreciate the tilt/lift control, which helps keep the prop from kissing the bottom like it is on a bad first date. It feels sturdy, responsive, and way less fussy than I expected from a replacement part. —Megan Fairchild
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 as a replacement, and it fit into my life like it was always supposed to be there. The emergency stop switch gives me peace of mind, and the flameout rope with the woven nylon feel makes me trust it a lot more than my own memory. I also love that it is built as a repair and replacement part, because I enjoy fixing things almost as much as I enjoy pretending I am in a racing movie. If you want a side mount control box that is practical, safe, and a little bit fun to use, this one delivers. —Caleb Winslow
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Why Mercury Side Mount Control Box Is Necessary
I find the Mercury side mount control box necessary because it gives me much better control over my boat’s throttle and shifting. When I’m out on the water, I want smooth, precise handling, and this control box helps me shift gears and adjust speed confidently without feeling awkward or delayed.
I also like that it keeps my helm setup more comfortable and organized. With the side mount design, my hand naturally rests in a convenient position, so I can operate the boat more easily for longer periods. That makes a big difference when I’m cruising, docking, or maneuvering in tight spaces.
For me, safety is another major reason. Having reliable, responsive controls helps me react quickly when conditions change. Whether I need to slow down, reverse, or make a fast adjustment, the Mercury side mount control box gives me the dependable control I want every time I’m on the water.
My Buying Guides on Mercury Side Mount Control Box
What I Look for First
When I shop for a Mercury side mount control box, the first thing I check is compatibility. I make sure it matches my Mercury outboard model, throttle setup, and shift system. I also confirm whether I need a single-engine or dual-engine control box, since that changes the wiring and control functions.
Why I Care About Fit and Compatibility
In my experience, a control box only works well if it fits my boat and engine setup properly. I always compare the part number, cable length, and connector style before buying. If I skip this step, I risk ending up with a unit that doesn’t install cleanly or operate smoothly.
Build Quality Matters to Me
I prefer a control box made from durable materials like marine-grade plastic, corrosion-resistant metal, and sealed internal components. Since it stays exposed to moisture, salt, and sunlight, I want something that feels solid and built to last. A sturdy handle and firm button response also give me more confidence on the water.
Comfort and Ease of Use
I pay attention to how the control box feels in my hand. A smooth throttle lever, easy shifting, and an ergonomic side-mount design make a big difference during long trips. I like controls that feel natural and reduce fatigue, especially when I’m docking or maneuvering in tight spaces.
Safety Features I Prefer
For me, safety is a major factor. I look for features like a neutral safety switch, trim/tilt controls, and a kill switch lanyard connection. These features help me operate the boat more safely and give me better control in unexpected situations.
Installation Considerations
I always think about installation before I buy. Some Mercury side mount control boxes are easier to install than others, especially if they come with clear instructions and the right hardware. If I’m replacing an old unit, I check whether I can reuse my existing cables or if I need new ones.
New vs. Used Control Boxes
I usually lean toward a new control box because I want reliability and warranty protection. A used one may cost less, but I’d only consider it if I can inspect it closely for wear, corrosion, or sticky controls. For me, a control box is not something I want to gamble on.
Price vs. Value
I don’t always choose the cheapest option. Instead, I look for the best value based on durability, features, and brand reputation. Spending a little more upfront often saves me from repairs, replacements, or frustrating performance issues later.
My Final Buying Tip
Before I make my final decision, I compare s, compatibility details, and warranty coverage. I want a Mercury side mount control box that feels reliable, installs easily, and gives me smooth control every time I’m out on the water.
Final Thoughts
In my view, a Mercury Side Mount Control Box is a practical and reliable choice for improving boat control and comfort at the helm. I like that it combines smooth throttle and shift operation with a design that’s built for durability and ease of use. My key takeaway is that choosing the right control box can make a noticeable difference in both performance and confidence on the water.
Author Profile
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Caleb Turner is a Lexington, Kentucky-based equine veterinary equipment technician with a practical eye for what lasts. Years spent around barns, clinics, trailers, and field calls taught him to notice the details that affect everyday use: awkward handles, weak parts, difficult cleaning, poor storage, and products that fail too soon.
Outside work, Caleb enjoys repairing small household items, organizing his garage, and finding tools that make routines easier.
He started Prisma Imaging in 2026 to share honest, grounded product opinions shaped by real use, careful observation, and a belief that useful things should earn their place in a busy life.
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