My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-99392 Wiring Harness for Mercury Outboard Engines

Manufacturer

Picture for manufacturer Sierra

Part Number

118-99392
6 reviews
Sale Price

$196.41

2 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

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

Key Features:

  • Direct replacement for Mercury OEM part number 84-99392
  • Marine-grade tinned copper wiring resists corrosion in harsh saltwater environments
  • Pre-terminated connectors for plug-and-play installation
  • UV-resistant insulation protects against sun damage and cracking
  • Built to meet or exceed OEM specifications for fit and performance

Sierra marine parts are engineered to deliver dependable performance and long service life in demanding marine applications. This wiring harness restores proper electrical function to your Mercury outboard, making it an essential component for engine maintenance and repair.

Quality product just as advertised quick shipping. No problem it fits Sammy out.

Satisfied. Next up is bushings and seals for carriage rebuild

very good !

Na

super fast and good service

The Item I ordered arrived in good shape and is now being installed. The customer service was great.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy