Warning Light Kit 4psi Extreme Water Pressure

The Warning Light Kit 4psi Extreme Water Pressure is a critical monitoring system designed for marine engines and closed-loop cooling circuits where early detection of pressure anomalies prevents catastrophic failure. Built by QuickCar Racing Products, this sender and wiring kit provides real-time feedback on coolant or hydraulic pressure conditions, alerting operators before dangerously low pressure compromises engine protection. Whether you're running a high-performance inboard, outboard, or specialized marine application, accurate pressure monitoring is non-negotiable for long-term reliability on the water.

This kit combines a precision pressure sender with pre-assembled wiring harness, engineered to trigger warning lights at a 4 psi threshold—ideal for applications requiring immediate notification of pressure loss in marine cooling or lubrication systems. The 1/8 inch NPT male connection threads directly into standard marine engine blocks, oil coolers, or transmission housings, ensuring secure installation without adapter fittings. The compact sender body (5.5 × 1.25 × 9 inches) weighs just 0.26 pounds, making it unobtrusive in tight engine compartments while delivering reliable electrical continuity across ambient temperature and vibration cycling typical of boating environments.

Professional boaters, commercial fishing operators, and racing teams benefit most from this kit's straightforward integration into existing instrument panels and warning systems. Installation requires only a clear 1/8 NPT threaded port and a 12-volt indicator light circuit; the included wiring simplifies dash setup on both retrofit and OEM installations. Compatibility spans freshwater and saltwater service, though routine inspection of the sender connection point prevents corrosion buildup in salt environments. This is the specification you choose when pressure monitoring cannot be an afterthought.