Sierra 18-8807-1 Spark Plug Wiring Set Replaces 0503747


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Sierra 18-8807-1 Spark Plug Wiring Set

Sierra replacement spark plug wiring set for OMC Stern Drives. Includes five wires, including a coil wire. Fits OMC 2.3L 4 Cyl. Engines (1987-90)


  • 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.


  • Cyl. : 4
  • Ignition Type: Conventional
  • 1 Spark Wire 23"
  • 3 Spark Wire 29"
  • 1 Coil Wire 13"

Interchangeable with:

  • Mallory
    • 9-28035
  • OMC Stern Drive
    • 503747

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