Quicksilver 814281T09 Shift Interruptor Switch Marine Outboard

The Quicksilver 814281T09 Shift Interruptor Switch is a genuine OEM replacement component designed for Mercury Marine outboard and sterndrive engines. This switch plays a critical role in the ignition and shifting system by momentarily interrupting the ignition signal during gear changes, allowing for smooth, damage-free shifting under load.

Key Features:

• Genuine Quicksilver OEM replacement part — ensures proper fit and function
• Interrupts ignition briefly during shifting to reduce gear engagement stress
• Designed for compatibility with Mercury and Mariner outboard and MerCruiser sterndrive applications
• Durable construction built to withstand the marine environment
• Direct OEM replacement for reliable, factory-spec performance

The shift interruptor switch is an essential safety and drivetrain protection component. When the operator moves the shift lever, this switch signals the engine to momentarily reduce power, enabling clean and reliable engagement of forward or reverse gear. Replacing a faulty shift interruptor switch can resolve hard shifting, gear clunking, or refusal to shift issues.