Mercury - Bushing - 23-8M0112221. The Mercury - Bushing - 23-8M0112221 is a genuine OEM replacement part designed to deliver precise fitment and long-lasting support for critical moving components in Mercury marine engines. This durable bushing minimizes metal-on-metal contact, reducing vibration and helping to prevent early wear in engine assemblies.. Key Features. Exact OEM Fit - Manufactured by Mercury to deliver reliable, factory-specific performance. Heavy-Duty Material - Engineered to with