Sierra 18-5140 Marine Contact Set for Mercury Mariner Outboards

The Sierra 18-5140 is a replacement ignition contact set designed for Mercury and Mariner outboard engines with conventional ignition systems. This precision-manufactured component ensures reliable ignition performance and proper engine operation.

Key Features:

• Fits Mercury and Mariner outboard engines: 3.9HP, 4HP, 6HP, 7.5HP, 9.8HP, and 35HP models
• Designed for engines with conventional ignition systems
• Direct replacement for OEM part number 398-2202
• Quality construction meeting or exceeding original equipment specifications
• Essential component for maintaining proper ignition timing and spark delivery

Contact sets are critical ignition components that require periodic replacement as part of regular tune-up maintenance. This Sierra replacement part provides reliable performance and proper fit for specified Mercury and Mariner outboard applications.