Description
Review this item in the context of the repair, installation access, nearby parts, and the result the completed job is intended to achieve.
| Brand | CQYD |
|---|---|
| Material | Plastic |
| Engine Type | 4 Stroke |
| Operation Mode | Electrical,Motor |
| Recommended Uses For Product | Replacement part for ignition systems of various outboard motor models, including Mercury, Mariner, and SportJet, ranging from 50hp to 225hp |
| Voltage | 12 Volts (DC) |
| Mounting Type | Engine Mount |
| Fuel Type | Gasoline |
| Maximum Horsepower | 275 Horsepower |
| Manufacturer | CQYD |
| Item Weight | 15.2 ounces |
| Package Dimensions | 6.6 x 5.2 x 2.3 inches |
| Item model number | 332-777 8A12 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 332-777 8A12 |
Additional Info: Ground Wire Attached
Part Numbers: 332-7778A12, 332-7778A9, 332-7778A6, 332-7778A3, 332-5524A1, 332-7778A1, 332-7778A7
Applications:
Fit Following Mercury Models
Mercury 50hp 3cyl 6428681-0D000749
Mercury 60hp 3cyl 6428681-0D000749
Mercury 65hp 4382057-4571651
Mercury 70hp 4571652-5128279
Mariner 70hp 5128280 – Later
Mercury 70hp 5579016-6428680
Mercury 70hp 3cly 0C272000-0D283221
Mercury 75hp 3cyl 0C272000-0D283221
Mercury 80hp 3cyl 0A996142-0C221999
Mercury 90hp 6cyl 5299506 – Later
Mercury 90hp 3cyl 0A996142-0D283221
SportJet 90hp 0E023150 0E095087
Mercury 105hp Jet 0D082000-0G303045
Mercury 115hp 6cyl 5314656-Later
Mercury V-135 0A904646 – Later
Mercury 140hp 5327663 – Later
Mercury 140hp Jet 0D082000-0G960499
Mercury V-150 4868998-5129429
Mercury V-150 5129480-0G960499
Mercury V-150 XR2 6616991-0A904645
Mercury XR4, Magnum II 0B242885-0D819999
Mercury V-150 XR6 0D82000-0G960499
Mercury V-175 4301235-5180108
Mercury V-175 5180109-0G960499
Mercury V-175 EFI 5180109-0G960499
Mercury V-175 XR1 5180109-0G960499
Mercury V-200 4839034-5158928
Mercury V-200 5158929-0G960499
Mercury V-200 XR1 5158929-0G960499
Mercury V-220 0B117316 – Later
Mercury V-225 5628028 – Later
Package Includes: 1 x CDI Switch Box
Instructions:
If the Black Ground Wire is Not Already Connected to the CDI Box,Fasten to One of the 4 Mounting Holes on the Outside of the Box.
Fasten the Other End of This Black Wire to a Good Ground Spot on the Engine
If the Engine Uses an Orange Colored Lead That is connected to the Box,Connect this to the “Black/Yellow” Stud on the New Box.




Westerman –
I didn’t give it five stars because I have only used it once and cannot validate the longevity/reliability. I have an older 1984 mercury black max 150. Hard starts, excessive smoke, and extremely loud and rough idle. Starting fluid didn’t help either and it seemed no matter what sequence I used it flooded. I checked spark and ohm’d the switch boxes. Was missing spark on one cylinder and one switch box tested bad. Order this and another one from a different seller. Tested the original boxes again and both tested good. Checked all my connections and everything worked fine. Then all of a sudden the symptoms reappear but the original switch boxes test good again. Went ahead and replaced them with these and all my problem have gone away. Easiest start it’s ever had, smoothed out the idle and the holeshot is much better. I’ve only ran these boxes for one evening starting, stopping, idleing and wide open. They worked great. Don’t know that I’ll be able to update this after a few months or a year but I’ll try. For the price, don’t hesitate to try this out. I’ve chased a lot of bugs out of my outboard and these work great.
Billy Leonard –
Fast quick shipment. Strap was a mystery. not gooe explanation as to how to install this. After installtion no spark when trying to start. Not sure how to test this to verify it is a good working unit. Not customer support to answer the issue
rick popp –
Worked fine , easy to replace and works fine
EngineersView –
This product does not work the same as the OEM version in my Mercury 1979 70HP outboard, serial# 5,466,253 as claimed in the description.It moved the timing 4 degrees at 600RPM so that means the input circuit is not the same as the Mercury product and is triggering at a different point on the sensor pulse. Even though this can be adjust back to 0 it throws the spark advance off by 4 degrees which is not easy to change.Looking at the drive to the primary of the coil with an oscilloscope it can be seen that the output circuit is not the same either. The Mercury appears to charge the capacitor then series connects it to the coil while this one charges up the capacitor thru the coil then grounds the capacitor to discharge.There appear to be many different versions of these CDI on the market and even when they look the same under close inspection they are different.
Ham –
Tuning up my boat for summer. Order all new ignition components including, trigger, stator, CDI switch box, rectifier and flywheel. After the work, the boat started right up, idled smooth but on the lake it had no power. Spent so much time going thru all kinds of repair. Almost replaced the engine. Come to find out all along the new switchbox was defective all along.OEM or name brand parts. These no name stuff will cost you your expensive summer vacation.
Customer –
Install was easy. Boat started right up first try. Would recommend. Only problem was a bolt broke off so I zip tied it on. Still works great!