Engineered Marine Products 300-01852 CDI Switch Box Power Pack

The Engineered Marine Products 300-01852 is a high-quality CDI switch box (power pack) designed as a direct replacement for Mercury and Mariner outboard engines. This critical ignition component controls the timing and delivery of electrical current to the spark plugs, ensuring reliable engine performance and smooth operation.

Key Features:

• Direct replacement for Mercury OEM part numbers 7778A12, 7778A6, 7778A7, 7778A9, F7778A9, F749301, 7778A3, 5524A1, and 7778A1
• Compatible with 1976-1998 Mercury/Mariner 3-cylinder outboards (65-90 HP)
• Compatible with 1976-1998 Mercury/Mariner V6 outboards (135-275 HP)
• Designed for 2-cycle outboards using ADI (Alternator Driven Ignition) systems
• Includes ground wire attached for proper installation
• Constructed from premium materials for superior performance and durability
• Easy installation with direct bolt-on fitment

This switch box is essential for maintaining optimal ignition timing and spark delivery in your Mercury or Mariner outboard. When your original CDI unit fails, symptoms include difficult starting, loss of power, intermittent firing, or complete engine failure. The EMP 300-01852 provides reliable, cost-effective restoration of your outboard's ignition system performance.