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Our new Buckshot Racing #77 aftermarket SwitchBoxes fit all 1976 to 1999 V6 2-Stroke Outboards; 2.5, 2.4, and 2.0 Liters. These spec'ed to be very similar to the Mercury OEM A13 boxes (not A14).


Replaces OEM 332-7778 A13 as well as 114-7778, F749301, F7778A9, 18-5775, 5524-A1, 7778-A1, 7778-A3, 7778-A6, 7778-A7, 7778-A12, and 7778-A13. These also fit Mercury Mariner 3-cyl, 65-90 HP 2-stroke outboards.


Metric posts w/ nuts and ground straps w/ threaded set are included.


Unlike other manufacturers, these include a 3-month, no-hassle, one-time, replacement warranty.


The limited run of these boxes includes a set of two (2) SB-77 Switchboxes with two (2) Buckshot Racing #77 decals.


Contact Mike Hill at

2 Mercury V6 SB-77 Switch Boxes

SKU: SB-77
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