Sierra Switch Box - SIE-18-5775-1

Sierra 18-5775 Switch Box

The Sierra 18-5775 Switch Box is a replacement part for Mercury and Chrysler/Force engines. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.

Features:

Fits: 3 & 6 cylinder outboards with ADI ignition systems

Enhanced Spark Efficiency: Delivers high-voltage performance for quick and reliable engine start

Stores and rapidly discharges high-voltage to the ignition coil for a strong, reliable spark

Provides efficient and precise timing for optimal engine performance

Marine-Grade Durability: Built to withstand harsh marine environments, including exposure to moisture and corrosion.

OEM matched wire colors for easy identification during installation

Interchangeable With:

CDI

114-7778

Chrysler/Force/US Marine

332-7778A12

Mallory

9-25100

Mercury Marine

332-5524A1

332-7778A1

332-7778A12

332-7778A3

332-7778A6

332-7778A7

332-7778A9

F749301

F7778A9

Mercury Race Outboard

332-7778A12

332-7778A3

Mercury Sport Jet

332-7778A12

Frequently Asked Questions

• What is the Sierra 18-5775 Switch Box used for? The Sierra 18-5775 Switch Box is a replacement part for Mercury and Chrysler/Force engines with 3- or 6-cylinder outboards using ADI ignition systems. It stores and rapidly discharges high voltage to the ignition coil to produce a strong, reliable spark and provides precise timing for engine operation.
• What outboard engines does the Sierra 18-5775 Switch Box fit? The Sierra 18-5775 Switch Box fits 3- and 6-cylinder outboards with ADI ignition systems. The supplied description does not specify individual engine horsepower, model years, or serial-number ranges, so verify your engine configuration and existing switch box part number before purchasing.
• Does the Sierra 18-5775 Switch Box work with Mercury and Chrysler/Force engines? Yes. The Sierra 18-5775 is identified as a replacement switch box for Mercury and Chrysler/Force engines. It is specified for 3- and 6-cylinder outboards with ADI ignition systems. Confirm your engine's ignition system and applicable part number before installation.
• What features does the Sierra 18-5775 Switch Box have? The Sierra 18-5775 provides high-voltage performance, stores and rapidly discharges high voltage to the ignition coil, and provides precise timing for engine operation. It also has marine-grade construction for exposure to moisture and corrosion and uses OEM-matched wire colors for easier identification during installation.
• What part numbers are interchangeable with the Sierra 18-5775 Switch Box? The Sierra 18-5775 is interchangeable with CDI 114-7778; Chrysler/Force/US Marine 332-7778A12; Mallory 9-25100; several Mercury Marine numbers including 332-5524A1 and 332-7778 series numbers; Mercury Race Outboard 332-7778A12 and 332-7778A3; and Mercury Sport Jet 332-7778A12.
• How should I verify fitment for the Sierra 18-5775 Switch Box? Verify that your outboard is a 3- or 6-cylinder engine using an ADI ignition system and compare your existing switch box number with the listed interchangeable numbers. The supplied description does not provide specific horsepower, year, or serial-number fitment, so those details should also be confirmed before installation.