Sierra Switch Box for Mercury Outboard Engines Ignition Repair Parts

Sierra switch boxes for Mercury and Mariner outboard engines are aftermarket replacements for the ignition switch box (also called a CDI box, power pack or ignition module). The switch box controls spark timing and delivery to the engine. If your outboard has a weak spark, a misfire or no spark, a failed switch box is a common cause. Replacing it can restore reliable starting and smooth running.

Key Features:

• Built to meet or exceed original equipment quality
• Designed to interchange with the original Mercury part numbers and with common CDI and Mallory cross-references
• Made for the demands of the marine environment
• Covered by Sierra's limited lifetime warranty against defects in workmanship and materials
• Each part number is made for specific engine applications, so check the part number against your engine's original switch box before ordering

Sierra supplies premium-quality aftermarket marine replacement parts, tools and components. This line gives boaters and technicians an alternative to dealer-priced ignition parts for repairing or maintaining Mercury and Mariner outboards.