Sierra 18-5230-9-1 10-Inch High Performance Marine Spark Plug Wire 7mm Outboard 5-Pack

The Sierra 18-5230-9-1 is a premium 10-inch, 7mm marine spark plug wire engineered specifically for outboard engine applications. Sold in a convenient pack of five, these high-performance ignition wires are built to withstand the demanding heat, vibration, and moisture conditions of the marine environment.

Key Features:

• Magnetic Suppression Core — Engineered for specific outboard applications, delivering maximum voltage to each cylinder
• Kevlar-Reinforced Core — Provides exceptional durability and extended service life under harsh marine conditions
• 7mm Stainless Steel Wound Conductor — Metallic core construction ensures reliable spark delivery for maximum horsepower and engine performance
• Premium Silicone Jacketing and Boots — Rated for extreme high-temperature environments, protecting the conductor and connections from heat damage
• Superior RFI/EMI Suppression — Electronics-friendly design shields sensitive onboard electronics and engine controls from radio frequency and electromagnetic interference
• Corrosion-Resistant Stainless Steel Terminals — Spark plug and distributor terminals resist corrosion for maximum conductivity and long-term reliability
• OE-Style Boots — Sealed boot design creates a barrier against heat, dirt, and moisture intrusion
• Thunderbolt-Type Ignition Compatible — Designed for use with Thunderbolt-type ignition systems common in outboard engines

Each wire measures 10 inches in length with a 7mm copper-core construction and a metallic wound core. This package contains five wires, making it ideal for multi-cylinder outboard engine tune-ups. Sierra's premium marine ignition components are built to meet or exceed OEM specifications for dependable on-water performance.