Quicksilver 863129 Manifold Drain Plug Check Ball

The Quicksilver 863129 (also known as part number 30-863129) is a genuine OEM check ball component designed for MerCruiser sterndrive and inboard marine engines. This precision-engineered ball check serves as a critical replacement part for maintaining proper function in manifold drain plug assemblies.

Key Features:

• Genuine Mercury Marine Quicksilver OEM part
• Designed specifically for MerCruiser inboard and sterndrive applications
• Essential component for manifold drain systems
• Ensures proper sealing and drainage function
• Precision-manufactured to exact OEM specifications

This check ball is commonly used in conjunction with manifold and engine block drain plugs to maintain the integrity of your marine engine's cooling system. Regular inspection and replacement of check balls helps prevent leaks and ensures reliable engine performance during winterization and seasonal maintenance.