Sierra 18-8808-2 Premium Spark Plug Wire Set for MerCruiser 4-Cylinder Engines

The Sierra 18-8808-2 is a premium spark plug wire set designed specifically for Mercury Marine 470, 485, 488, and 3.7L aluminum block engines with conventional ignition systems. This complete 5-wire set includes one 13-inch coil wire, plus spark plug wires measuring 23, 26, 34, and 39 inches, providing precise fitment for 4-cylinder MerCruiser stern drives.

Premium Marine-Grade Construction:

• High-tear-strength silicone jacket protects to 500°F
• Aramid inner core ensures conductor integrity
• Reinforcing mesh increases tensile strength of the wire
• Pure silicone boots provide maximum heat and moisture protection
• Stainless steel snap-lock terminals resist corrosion
• Unique mag wire conductor delivers the hottest spark

Sierra is one of the most trusted names in the marine industry, proudly offering high quality engine and drive parts that meet or exceed the original equipment specifications. This wire set replaces Mercury Marine part numbers 84-813720A6 and 84-816761Q6, as well as Mallory 9-28014 and CDI 631-0015.

Upgrading to fresh ignition wires improves engine efficiency, gas mileage, and overall performance while ensuring reliable starts and smooth operation in the harsh marine environment.