The Sierra 18-5775-1 is a premium aftermarket ignition switch box (also known as a power pack or CDI unit) designed for 3-cylinder and 6-cylinder Mercury, Mariner, Chrysler/Force, and US Marine outboard engines equipped with ADI ignition systems. This critical component controls the timing and delivery of high-voltage current to the spark plugs, ensuring reliable engine performance and smooth operation.
Key Features:
- Engineered to meet or exceed OEM specifications for reliable performance
- Direct replacement for multiple OEM part numbers including 332-7778A1, 332-7778A3, 332-7778A6, 332-7778A9, and 332-7778A12
- Compatible with Mercury/Mariner and Chrysler/Force outboards from 50 HP to 275 HP
- Interchangeable with CDI 114-7778 and Mallory 9-25100
- Fits 3 and 6-cylinder outboards with ADI ignition systems
- Manufactured to withstand harsh marine environments
This switch box is suitable for a wide range of Mercury and Force outboard models from the late 1970s through the 1990s, including 50, 60, 65, 75, 90, 105, 115, 135, 140, 150, 175, 200, 225, 250, 275, and 300 HP engines. Sierra is a trusted leader in aftermarket marine engine parts, providing quality replacement components backed by comprehensive warranty coverage.
