Sierra 18-5002 Tune Up Kit for Johnson/Evinrude Outboards – OEM Replacement Ignition Kit

The Sierra 18-5002 Tune Up Kit is a high-quality ignition maintenance kit designed for Johnson and Evinrude outboard engines. Engineered as a direct OEM replacement, it restores reliable ignition performance, improves starting, and helps maintain smooth engine operation.

Key Features:

• Designed for Johnson/Evinrude outboard engines (select 18–40 HP models)
• Replaces OEM part number 172523 and is compatible with GLM 72820 
• Includes (2) contact sets and (2) condensers for complete ignition service
• Meets or exceeds OEM specifications for performance and durability
• Improves engine starting and ignition reliability
• Marine-grade components built for harsh environments
• Backed by Sierra’s limited lifetime warranty