CDI Electronics 18-99403 Trigger for Mercury/Mariner 4-Cylinder Outboard Engines

The CDI Electronics 134-6454 is a replacement trigger assembly designed for Mercury and Mariner 4-cylinder outboard engines. This trigger features a distinctive 90-degree hooked linkage arm, essential for proper ignition timing and engine performance.

Key Features:

• Precision-engineered trigger assembly for reliable ignition system operation
• Features hooked (curved) linkage arm design for specific applications
• Direct OEM replacement for multiple Mercury part numbers
• Quality-tested for dependable marine engine performance

This trigger replaces Mercury/Mariner OEM part numbers 77000A1, 96453A1, 96453A2, and 965451. It is specifically designed for engines with hooked linkage arms; if your engine has a straight linkage arm, a different trigger model (134-6452) is required.