Sierra 18-99255 Mercury 6-Cylinder High-Performance Spark Plug Wire Set – MAGFORCE MSP1

Mercury High-Performance Spark Plug Wire Set (6-Cylinder)

Premium MAGFORCE wire set designed for superior RFI suppression, reducing interference and "ghost" tachometer issues. Verify compatibility with your specific engine model for optimal fit—consult your Mercury manual or serial number.

Replaces: Mercury 84-881909T, 84-815358, 84-815358A1, CDI 934-1945.

MAGFORCE Premium Marine Spark Plug Wire Set

• Electronics-friendly design protects onboard devices from RFI and EMI
• Moisture-proof molded silicone insulators
• High-quality conductive core with aramid reinforcement for superior conductor integrity and tensile strength
• Delivers maximum voltage for hotter spark and improved efficiency
• High-tensile-strength membrane enhances durability and heat resistance
• 8 mm high-tear-strength silicone jacket rated to 500 °F
• Pre-greased silicone boots for easy installation and maximum heat/moisture protection
• Stainless steel snap-lock terminals resist corrosion and prevent pull-off

Note: With Sierra's acquisition of CDI Electronics, these wires maintain the same high-performance specs as the original CDI 934-1945. The updated Sierra version features a blue jacket for easy identification (previously orange on CDI).