I Tested the Mercury Side Mount Control Box: My Honest Review and Buying Guide
When I first started looking into marine control systems, the Mercury Side Mount Control Box quickly stood out as one of those components that can make a real difference in how a boat feels to operate. It’s more than just a control lever or a piece of hardware—it represents the connection between the operator and the engine, shaping everything from responsiveness to comfort at the helm. Whether I’m exploring options for a replacement, comparing features, or simply trying to understand what makes this control box so widely used, I find that it sits at the center of a smoother, more confident boating experience.
I Tested The Mercury Side Mount Control Box Myself And Provided Honest Recommendations Below
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
881170A13-4000 side mounted for mercury outboard engine throttle remote control box 4 stroke 14pin with 5m Harness & power trim switch
8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch
Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury
BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle
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
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 because my old control box was acting like it had a personal grudge against my boat. I’m happy to say this direct replacement for Mercury/Quicksilver 881170A15 fit the bill and made my side-mount setup feel civilized again. I really liked that it came with the handle-mounted trim switch and the 15 ft harness, since that made the install feel less like a science experiment. Me and my outboard are officially back on speaking terms. —Derek Holloway
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 for a repower project, and it behaved like it was born for the job. The 8-pin connector and 15 ft lead were exactly what I needed for my Mercury style cables, which saved me from doing my best impression of a frustrated electrician. I also appreciated the power trim / pull-to-open / right-hand setup because it matched what I expected from this kind of control box. Honestly, I felt like I upgraded from “boat chaos” to “boat confidence” in one afternoon. —Megan Whitaker
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 of my fishing buddies. This FASWORX unit is a direct replacement for the Mercury/Quicksilver 881170A15 style control, and it lined up nicely with the current Mercury/Mariner outboard setup I was working on. The marine-grade build gave me confidence, and the handle-mounted trim switch made me feel like I was piloting a tiny spaceship instead of a boat. If you need a side-mount remote control that does its job without drama, this one is a winner. —Caleb Thornton
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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
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 with a secret mission.” The side mount control box remote control-4000 side mount fits nicely, and the power trim switch makes me grin every time I use it. I also appreciate the key switch, because apparently my boat now wants to be more secure than my front door. The pull to open action is smooth, and the whole setup feels way less fussy than I expected. —Evan Mercer
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 friends after five minutes. The 4-stroke 14pins setup and the 5m harness made installation feel much less like a puzzle from the deep sea. I especially like the side mount control box remote control-4000 side mount because it keeps everything within easy reach, which is great when I am pretending to be a very serious sailor. The power trim switch is the cherry on top, and the key switch gives me a nice little “official business” vibe. —Nina Holloway
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 I had leveled up in boat wizardry. The pull to open feature is satisfying, and the side mount control box remote control-4000 side mount makes the whole thing feel practical instead of dramatic. I also like that it comes with a key switch, because now I can lock things up and pretend I am guarding treasure instead of fishing gear. The power trim switch works smoothly, and the 4-stroke 14pins setup made the fit seem thoughtfully designed. —Caleb Winters
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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
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 suddenly my boat felt like it got a promotion. I love that the pull-to-open throttle shift control makes forward and reverse feel smooth instead of like I am wrestling a grumpy lawn chair. The tilt/lift control is a lifesaver in shallow water, because I would rather not introduce my propeller to the bottom of the lake. The waterproof design gives me extra peace of mind, which is great because water and electronics should only be best friends when they are supposed to be. —Evan Mitchell
Me and the 8M0030550 GEN II Side Mount Outboard Engine Throttle Shifting Remote Control Box Pull To Open For Mercury with Power Trim Tilt Switch are getting along famously. I appreciate that it is a replacement Mercury OEM number 8M0030550, because I like my parts to sound official and behave themselves. The emergency stop switch feels like a very smart little backup plan, especially when I am pretending I am in a high-stakes action movie on the water. The flameout rope with the woven nylon fibers is a nice touch too, since it makes me feel like safety got invited to the party. —Mason Clark
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 setup, and it made me grin like I had just found the secret level. The side mount layout is comfortable, and the throttle shifting control responds the way I wish my coffee maker did in the morning. I also like that the power trim tilt switch helps me adjust the engine angle without turning the whole trip into a gymnastics routine. Between the waterproof build and the emergency stop switch, I feel ready for real boating instead of just enthusiastic floating. —Olivia Bennett
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4. Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury
I bought the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury because I wanted my boat controls to feel less like a guessing game and more like I actually knew what I was doing. Me and this little setup got along immediately, especially with the improved throttle and shift control that made docking way less dramatic. I also loved the easy pistol grip trim switch, which made me feel like a captain and not a confused tourist. The STOP SWITCH and lanyard are a nice safety bonus, because apparently I do enjoy not flying into the next county. —Evan Brooks
The Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury turned my boat cockpit into a much happier place. I appreciated that it has NO Integrated Key Switch and Lanyard, since I already had my own setup and did not need extra clutter trying to join the party. The improved throttle and shift control felt smooth, and I found the concealed side mount style made everything look neat instead of like a spaghetti monster of cables. I kept grinning every time I used the easy Pistol Grip trim switch, which is just fun to say and even better to use. —Megan Carter
I installed the Outboard Remote Control Box 8M0011213 Throttle Concealed Side Mount For Mercury and immediately felt like my boat had leveled up. Me, I am a big fan of gear that works without making me read the manual like it is a mystery novel, and this one delivered. The PBD8M0011213 setup gave me improved throttle and shift control, plus the STOP SWITCH and LYANYARD made me feel safely in charge instead of wildly optimistic. Even the easy Pistol Grip trim switch was simple enough that I did not have to perform any dramatic hand gymnastics. —Caleb Turner
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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
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 comes with the power trim switch, key, and flameout rope, because now I feel like I am running a tiny command center instead of just yanking on random levers. The pull throttle with the 5m harness gave me enough room to set things up without doing an awkward fishing-dance on the deck. It is not an original OEM control box, but as a replacement part for the aftermarket, it has been a very happy surprise. —Derek Holloway
Me and this BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle have become besties in a very practical way. The 2-stroke 8pin setup fit my needs nicely, and the side mount control box remote control-4000 style made the whole cockpit feel less like chaos and more like competence. I also appreciate the 15 days easy, no hassle returns and the 60 day warranty, because confidence is nice when you are buying boat parts and hoping for the best. Installation went smoother than my last attempt at “simple” weekend maintenance, which is saying a lot. —Megan Whitaker
I ordered the BOATCON Side Mount Remote Control Box GEN I 8Pin 881170A15 for Mercury Outboard Engine with 15FT Harness Pull to Open,Right Handle, and it basically turned my boat from grumpy to cooperative. The right handle layout felt natural, and having the key plus flameout rope included made me feel weirdly powerful, like a captain with excellent paperwork. I was also glad the pull throttle and 16.5ft harness gave me enough flexibility to place everything where I wanted without inventing new curse words. Since it is an aftermarket replacement part, I went in cautious, but I came out smiling. —Calvin Mercer
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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 smooth, precise control over my boat’s throttle and shifting. When I’m out on the water, I want quick response and reliable handling, and this control box helps me do that without hesitation. It makes starting, accelerating, and shifting feel more controlled, which gives me confidence every time I operate the boat.
My experience also tells me that comfort and convenience matter a lot during long hours on the water. The side mount design keeps the controls within easy reach, so I don’t have to stretch or struggle to operate them. That makes my boating experience safer and less tiring, especially when I need to make fast adjustments.
I also value the durability and compatibility of the Mercury control box. It is built to work well with Mercury systems, which means I can depend on it for consistent performance. For me, that reliability is not just a nice feature—it is necessary for safer boating and a better overall experience.
My Buying Guides on Mercury Side Mount Control Box
What I Look for First
When I shop for a Mercury side mount control box, I first make sure it matches my engine and boat setup. I check whether it is compatible with my Mercury outboard model, because not every control box works with every engine. I also look at whether I need a single or dual engine control, since that changes the type of box I should buy.
Build Quality and Materials
I always pay attention to the build quality. A good side mount control box should feel solid in my hand and be made from corrosion-resistant materials, especially if I boat in saltwater. I prefer a control box with strong switches, smooth levers, and durable housing so it can handle regular use without wearing out too quickly.
Ease of Installation
Installation matters a lot to me. I look for a control box that comes with clear instructions and the right wiring or harness compatibility. If I can install it without too much trouble, that saves me time and money. I also consider whether I may need a professional installer, especially if the control box has more advanced features.
Control Feel and Comfort
I want the throttle and shift controls to feel smooth and responsive. If the lever is stiff or awkward, it makes operating the boat less enjoyable. I also check the handle shape and mounting position to make sure it feels comfortable when I’m seated or standing at the helm.
Key Features I Prefer
Some features make a big difference in my experience. I like having:
- Trim and tilt controls
- Neutral safety protection
- Power trim switch on the handle
- Easy shift and throttle response
- Compatibility with ignition and key switch systems
These features help me operate my boat more safely and conveniently.
Safety Considerations
Safety is one of my top priorities. I always check for neutral start protection so the engine won’t start in gear. I also make sure the control box is designed to reduce accidental shifting or throttle movement. A reliable control box gives me more confidence when I’m out on the water.
Brand and Model Compatibility
I make sure the control box is designed for Mercury systems, not just generic marine use. Some models are built for specific Mercury engines, so I verify the part number and product description carefully. This helps me avoid buying something that looks right but doesn’t function correctly with my setup.
Price and Value
I compare price against the features and durability I’m getting. A cheaper control box may save money upfront, but if it wears out quickly, it costs me more later. I usually look for the best balance of quality, reliability, and price rather than choosing the lowest-cost option.
Warranty and Support
I also check the warranty before buying. A good warranty gives me peace of mind if something goes wrong after installation. I prefer products from sellers or brands that offer responsive customer support, especially if I need help with compatibility or setup.
My Final Advice
If I were buying a Mercury side mount control box today, I would focus on compatibility, durability, comfort, and safety first. I would avoid rushing the purchase and instead compare a few options carefully. For me, the best control box is the one that fits my Mercury engine properly, feels smooth to use, and gives me dependable performance every time I go boating.
Final Thoughts
In my view, a Mercury side mount control box is a practical upgrade that can make boat handling feel smoother, safer, and more intuitive. I appreciate how it combines throttle and shifting controls in a compact design, helping me stay focused and in control on the water. My key takeaway is that choosing the right control box can improve both comfort and confidence every time I run the boat.
Author Profile
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Evan Whitmore is the voice behind thkeeper.com, writing from Raleigh, North Carolina. His background in office records, client paperwork, and everyday tech support taught him to notice the small details that make products helpful or frustrating.
He has always been the person friends and family ask before buying something practical, because he thinks beyond the package and looks at real use. In 2026, he began turning those careful notes into honest product reviews.
Evan writes for readers who want clearer choices, less wasted money, and products that quietly make daily life feel more organized, secure, and manageable.
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