VDO Pressure Sender 400 PSI Floating Ground - 1/8-27 NPT

The VDO Pressure Sender 400 PSI Floating Ground is a precision engine monitoring instrument built for marine and automotive applications where reliable oil or fuel pressure data is essential. After years running boats and engines under demanding conditions, any angler or boater knows that pressure anomalies often signal trouble before catastrophic failure occurs. This sender connects directly to your gauge or digital display, giving real-time feedback on system integrity. Whether you're monitoring oil pressure on a diesel inboard, fuel pressure on a fuel-injected outboard, or hydraulic pressure on deck equipment, this sender delivers the accuracy your engine management system demands.

Built with a 1/8-27 NPT threaded connection and knurled nut assembly for secure installation, the VDO sender operates across a 6–24V electrical range—compatible with both 12V and 24V marine systems. Its floating ground design eliminates the need for a dedicated ground wire, simplifying wiring and reducing corrosion risk in salt-water environments where every electrical connection matters. The 400 PSI maximum pressure rating covers standard automotive and light marine hydraulic circuits, with tight sensor calibration ensuring gauge accuracy within practical operating ranges. Compact at just 0.3 lbs and 5 × 1 × 8 inches, it fits easily into engine bays or console mounting boxes without taking up valuable real estate.

This sender excels in retrofit and OEM applications where VDO compatibility is specified or where a robust, field-proven sender is needed for harsh marine duty. Install it into any threaded port rated for 1/8-27 NPT fittings—common on marine engine blocks, transmission coolers, and hydraulic manifolds. Its floating ground architecture proves especially valuable on boats where ground paths are compromised by corrosion or where multiple electrical systems share questionable return paths. Whether you're troubleshooting a gauge that's gone silent or upgrading instrumentation on a restored classic, the VDO Pressure Sender 400 PSI delivers the dependable feedback that keeps your engine running strong and gives you peace of mind on the water.