Sierra 18-5775 3 & 6 Cyl Outboard Switch Box

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.

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