Sierra 18-0871-1 Service Valve with O-Ring for Johnson Evinrude Outboards

The Sierra 18-0871-1 Service Valve with O-Ring is a premium aftermarket replacement designed for Johnson and Evinrude outboard motors equipped with primer valves. This essential maintenance component allows engines with electric primers to convert to a thru-the-primer maintenance system, enabling easy injection of engine tuner and fogging oil directly through the primer valve.

Key Features:

• Fits all Johnson/Evinrude outboards with primer valve (except 1993 9.9 & 15 HP models)
• Includes o-ring for complete installation
• Maintains normal primer and manual back-up operation after installation
• Enables through-the-primer injection of engine tuner and fogging oil
• Engineered to meet or exceed OEM specifications
• Replaces OEM part number 175158

Sierra Marine is a trusted leader in aftermarket marine engine components, providing quality parts designed to withstand harsh marine environments. This service valve is an essential component for routine maintenance and winterization procedures on compatible Johnson and Evinrude outboard engines.