Sierra 118-99594 Wiring Harness for Johnson Evinrude Outboards

The Sierra 118-99594 (18-99594) Wiring Harness is a premium aftermarket replacement internal engine wiring harness engineered for Johnson and Evinrude outboard motors. Designed as a direct OEM replacement, this harness restores reliable electrical connectivity throughout the engine, ensuring proper communication between ignition, charging, and auxiliary systems.

Sierra International is a trusted name in marine aftermarket parts, manufacturing components that meet or exceed original equipment specifications. This wiring harness is built to withstand the harsh marine environment, featuring durable insulation and corrosion-resistant construction for long-lasting performance on the water.

Key Features:

• Direct OEM replacement for Johnson and Evinrude outboard motors
• Matches original factory wire colors for straightforward installation
• Built to meet or exceed manufacturer specifications
• Durable marine-grade construction for corrosion resistance
• Replaces OEM part number 18-99594
• Backed by Sierra's limited lifetime warranty

Sierra part number 18-99594 (catalog number 118-99594) is the correct replacement harness for compatible Johnson/Evinrude outboard applications. Always verify your engine's model and year before installation to ensure proper fitment.