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Sierra 18-8820-1 Spark Plug Wire Sets

Save $84.01 Save $84.01
Original price $165.00
Original price $165.00 - Original price $165.00
Original price $165.00
Current price $80.99
$80.99 - $80.99
Current price $80.99

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

  • For: Flagship, Indmar, Marine Power & Mastercraft - 350, 5.7L, 4541 , 7.4L, 502, 8.2L, 8 Cylinder, EST, EFI Ignition 
  • Magnetic Suppression Core manufactured for your specific application.
  • Kevlar® core for maximum durability and long life
  • Durable stainless steel wound conductor for maximum horsepower and engine performance
  • Premium silicone jacketing and boots for the ultimate in high temperature protection
  • Superior RFI suppression for the most sensitive electronic system
  • Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity
  • OE style boots provide a sealed barrier against heat, dirt and moisture


Replaces OEM part #•OMC 503754 For: 350/5.7L with EST or EFI ignition systems