CDI Electronics 18-99446 Mercury 2-Cylinder Trigger Sensor

The CDI Electronics 134-5744-2 (18-99446) is a replacement trigger sensor designed specifically for Mercury and Mariner 2-cylinder outboard engines. This critical ignition component sends timing signals to the engine's power pack, ensuring proper spark timing for reliable engine performance.

Key Features:

• Precision-engineered replacement for Mercury OEM trigger sensors
• Designed for 2-cylinder Mercury and Mariner outboard motors
• Includes necessary hardware for installation
• Quality manufactured by CDI Electronics, a trusted name in marine ignition systems
• Direct replacement for obsolete factory trigger sensors

Application:

• Fits 1996-1999 Mercury/Mariner 40 HP and 50 HP outboard engines

Replaces OEM Part Numbers: 828301, 854509, 854509A9, 855744A2, 855744A11

The trigger sensor is a critical component in the CDM (Capacitor Discharge Module) ignition system. When this part fails, engines may experience rough running, misfiring, or failure to start. Replacing a worn or faulty trigger sensor restores proper ignition timing and engine performance.