Sierra 18-8804-1 Premium Marine Spark Plug Wire Set

The Sierra 18-8804-1 Premium Marine Spark Plug Wire Set is engineered specifically for marine applications, delivering reliable ignition performance in the harsh saltwater environment. This high-quality wire set is designed for Thunderbolt-type ignition systems, providing superior conductivity and protection against the elements.

Key Features:

• Kevlar® reinforced core construction provides exceptional durability and extended service life in demanding marine conditions
• Durable stainless steel wound conductor maximizes horsepower output and ensures consistent engine performance
• Magnetic suppression core engineered for optimal performance in marine ignition systems
• Premium silicone jacketing and boots withstand extreme temperatures and protect against heat degradation
• Superior RFI (Radio Frequency Interference) suppression prevents interference with sensitive marine electronics and navigation equipment
• Corrosion-resistant stainless steel terminals at both spark plug and distributor ends ensure maximum conductivity and long-term reliability
• OE-style boots create a sealed barrier against heat, saltwater, dirt, and moisture intrusion

This wire set is specifically designed for Thunderbolt-type ignition systems commonly found in Mercury MerCruiser and other marine engines. The combination of premium materials and marine-specific engineering makes this an ideal replacement for maintaining peak engine performance and reliability.