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Sierra 18-99392 Internal Engine Wiring Harness for Mercury Outboard

Manufacturer

Picture for manufacturer Sierra

Part Number

18-99392
8 reviews
Sale Price

$216.03

In Stock (9)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-99392 is a replacement internal engine wiring harness designed specifically for Mercury outboard motors. This harness provides reliable electrical connections between critical engine components, ensuring proper ignition, charging, and sensor functions.

Key Features:

  • Premium aftermarket replacement for Mercury OEM wiring harness
  • Engineered to meet or exceed original equipment specifications
  • Pre-wired design simplifies installation and reduces setup time
  • Constructed with marine-grade wire and corrosion-resistant connectors
  • Direct replacement for worn, corroded, or damaged factory harnesses

Sierra Marine products are trusted by marine technicians and boat owners worldwide for their quality construction and reliable performance. When your outboard's internal wiring shows signs of corrosion or electrical issues, this replacement harness restores proper engine operation.

Great Products and pricing!!! Easy to track shipment.

Everything arrived on time, exactly as advertised.

Ok

Fast delivery

Very easy, would like to see a cheaper shipping option especially with buying insurance on top.

Easy to order, great price and fast shipping. Great first buying experience.

Online experience was excellent. Site was easy to navigate. Shipping was easy to track. Delivery was on top. Quality of product was above what was expected. What else could you ask for in an online experience? Definitely will use boatplicity again. Boatplicity = Simplicity. Bottom line.

Quick and easy

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