Sierra OP72533 Low Oil Pressure Safety Shut-Off Switch

The Sierra OP72533 Low Oil Pressure Safety Shut-Off Switch provides critical engine protection for inboard and inboard/outboard (I/O) marine engine installations. This safety device automatically shuts off the fuel pump when oil pressure drops below safe operating levels, preventing catastrophic engine damage in the event of oil pressure loss or engine failure.

Key Features:

• Automatically senses low oil pressure and immediately shuts off fuel pump
• 3-wire electrical hookup connects to starter, fuel pump, and ignition system
• Tees directly into existing oil pressure sender line for easy installation
• Designed specifically for I/O and inboard marine engine applications
• Prevents engine damage by cutting fuel supply when oil pressure fails
• Essential safety component for boats without factory low-oil shutoff protection

This switch is ideal for engine installations that require an automated method to shut off the fuel pump when the engine is turned off or experiences oil pressure failure. The simple 3-wire design integrates seamlessly with most marine electrical systems, providing reliable protection without complex installation.