Sierra 18-5881 Mercury 4 Cylinder Switch Box

Sierra 18-5881 Switch Box for Mercury, Chrysler, Force

The Sierra 18-5881 Switch Box is for 4 cylinder in-line outboards with ADI ignition systems. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.\

Features:

• Enhanced Spark Efficiency: Delivers high-voltage performance for quick and reliable engine starts
• Stores and rapidly discharges high-voltage to the ignition coil for a strong, reliable spark
• Provides efficient and precise ignition timing for optimal engine performance
• Marine-Grade Durability: Built to withstand harsh marine environments, including exposure to moisture and corrosion
• Direct OEM Compatibility: Replacement for a variety of Mercury engine models, ensuring a precise fit and seamless installation
• OEM matched wire colors for easy identification during installation
• Reliable Construction: High-quality materials and advanced engineering ensure long-lasting, dependable performance

For Use On Engine Models Mercury Outboards:

• 40 (4 cyl.) C159200 - G589999
• 45 1476510 - 1531958
• 75 (4 cyl.) 6432901 & UP
• 80 (4 cyl.) 4831999 - 5141096
• 80 (4 cyl.) 5141097 - 6432900
• 80 Jet D283222 - 6437999
• 85 (4 cyl.) 4366802 - 4831998
• 100 (4 cyl.) B209468 - 6437999
• 125 (4 cyl.) D283222 - G437999

Force Outboards:

• 1991D-95 120 E000001 - E138599
• 1991-92 120 L-Drive

Interchangeable With:

• CDI
• 114-577
• Chrysler/Force/US Marine
• 332-5772A5
• Mallory
• 9-25104
• Mercury Marine
• 332-5772A1
• 332-5772A2
• 332-5772A3
• 332-5772A5
• 332-5772A7
• F720301

Frequently Asked Questions

What is the Sierra 18-5881 Switch Box used for?

The Sierra 18-5881 Switch Box is designed for 4-cylinder in-line outboards with ADI ignition systems. It stores and rapidly discharges high voltage to the ignition coil to support a strong spark, while providing ignition timing for the listed Mercury and Force outboard applications.

What Mercury outboards does the Sierra 18-5881 Switch Box fit?

The Sierra 18-5881 is listed for select Mercury 4-cylinder outboards, including 40, 45, 75, 80, 80 Jet, 85, 100, and 125 HP applications. The fitment includes specific serial-number ranges, so verify your engine model and serial number against the listed application before ordering.

Does the Sierra 18-5881 Switch Box fit Force outboards?

Yes. The Sierra 18-5881 is listed for Force outboard applications, including 1991-1995 120 HP models with serial numbers E000001-E138599 and 1991-1992 120 L-Drive models. Verify your specific engine information before selecting this switch box.

What ignition system is the Sierra 18-5881 Switch Box designed for?

The Sierra 18-5881 Switch Box is specified for 4-cylinder in-line outboards using ADI ignition systems. The product description also lists OEM-matched wire colors for easier identification during installation.

What parts is the Sierra 18-5881 Switch Box interchangeable with?

The Sierra 18-5881 is listed as interchangeable with CDI 114-577, Chrysler/Force/US Marine 332-5772A5, Mallory 9-25104, and several Mercury Marine numbers, including 332-5772A1, 332-5772A2, 332-5772A3, 332-5772A5, 332-5772A7, and F720301.

What should I verify before ordering the Sierra 18-5881 Switch Box?

Verify that your outboard is a 4-cylinder in-line engine with an ADI ignition system and that its model, horsepower, and serial number match the listed applications. You can also compare the existing switch box part number with the listed interchangeable numbers before ordering.

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