Our new Super Sport German-made Buckshot Racing #77 SwitchBoxes fit all 1976 to 1999 Mercury V6 2-Stroke Outboards; 2.5, 2.4, and 2.0 Liters. These are designed for optimal power and manufactured to exceed OEM standards for long-lasting performance.
 
Replaces OEM 332-7778 A6 A12 A13 A14 as well as 114-7778, F749301, F7778A9, 18-5775, 5524-A1, 7778-A1, 7778-A3, 7778-A6, 7778-A7, 7778-A12, 7778-A13.
 
USA SAE posts w/ US brass nuts and ground straps w/ threaded set are included.
 
Includes a set of Two (2) Super Super German-made Switchboxes. These might be last run from Prufex in German. Grab a set while they last.
 
The Mercury Switchbox 338-7778 is a critical component in the CDI ignition system of many Mercury Marine and Mercury Racing 2-Stroke outboards. This part controls the distribution of electrical signals to the ignition coils, ensuring proper spark timing for smooth engine operation.
 
Faulty switchboxes can cause misfires, poor engine performance, or complete engine failure. Typlicall you will see a loss of spark on all three (3) port or all three (3) starboard cylinders.
 
Contact mike@buckshotracing77.com with any questions.