Hella 003259421 Engine Oil Pressure Switch

The Hella 003259421 Engine Oil Pressure Switch is a precision-engineered component designed to monitor oil pressure within the engine's lubrication system. This switch is installed directly in the engine oil circuit and provides critical feedback to alert drivers of potentially dangerous low oil pressure conditions.

Key Specifications:

• Thread Size: 1/4-18 NPT for secure installation
• Rated Voltage: 12V electrical system
• Current Rating: 0.25 amps
• Switch Function: Normally Closed Contact design
• Activation Pressure Range: 0.2 to 0.5 bar (2.9 to 7.3 PSI)
• Spanner Size: 24mm for installation
• Single-pin connector configuration
• Color: Black

How It Works:

This oil pressure switch utilizes a normally closed contact design, which means when the ignition is switched on but the engine is not running, the warning light on the dashboard illuminates. Once the engine starts and oil pressure builds to the specified threshold (0.2 to 0.5 bar), the switch opens the circuit and the warning light turns off. If oil pressure drops below safe levels during operation, the switch closes again, triggering the dashboard warning light to alert the driver of a potential problem.

Quality Engineering:

As a product from Hella, a globally recognized manufacturer of automotive electrical components, this oil pressure switch meets OEM quality standards for reliability and durability. Hella's reputation for precision engineering ensures accurate pressure readings and dependable performance in demanding engine environments.

This replacement oil pressure switch is essential for maintaining proper engine protection and preventing costly damage from undetected low oil pressure conditions.