Sierra 18-8820-1 Premium Marine Spark Plug Wire Set

The Sierra 18-8820-1 is a premium marine spark plug wire set engineered specifically for demanding marine environments. Designed for Thunderbolt-style ignition systems, this wire set delivers reliable ignition performance while withstanding the harsh conditions of saltwater and high-temperature engine compartments.

Key Features:

• Magnetic suppression core manufactured for specific marine applications
• Kevlar® reinforced core provides maximum durability and extended service life
• Durable stainless steel wound conductor ensures maximum horsepower and optimal engine performance
• Premium silicone jacketing and boots offer superior high-temperature protection
• Superior RFI suppression protects sensitive marine electronic systems from interference
• Corrosion-resistant stainless steel terminals at both spark plug and distributor ends for maximum conductivity
• OE-style boots create a sealed barrier against heat, dirt, and moisture intrusion
• Compatible with Thunderbolt-type ignition systems

This wire set combines advanced materials with marine-specific engineering to provide dependable ignition in the challenging marine environment. The combination of Kevlar reinforcement, stainless steel construction, and premium silicone components ensures long-lasting performance and protection against corrosion, heat, and electrical interference.