Sierra 118-99444 Internal Engine Wiring Harness for Mercury Mariner Outboards

The Sierra 118-99444 is a replacement internal engine wiring harness designed for Mercury and Mariner outboard motors. This harness provides essential electrical connections within the engine cowling, routing power and signals between the ignition system, sensors, and other critical engine components.

Key Features:

• Direct OEM replacement for Mercury Mariner internal engine harness
• Pre-wired and connectorized for simplified installation
• Marine-grade wiring and weather-resistant connectors
• Manufactured by Sierra, a trusted name in aftermarket marine parts
• Ensures reliable electrical connections in harsh marine environments

This internal engine harness is designed to meet or exceed OEM specifications, providing dependable performance and durability. Proper installation by a qualified marine technician is recommended to ensure correct fitment and electrical connections.