Veratron Coolant Temperature Sensor - 40° to 120°C - 3/8 - 18 DRYSEAL NPTF

The Veratron Coolant Temperature Sensor – 40° to 120°C – 3/8 – 18 DRYSEAL NPTF is a critical engine management component designed for marine and automotive cooling system diagnostics. This sensor bridges your engine's thermal data directly to the ECU, enabling precise fuel mixture adjustment, fan engagement timing, and overheating prevention. Whether you're tuning a performance build, restoring a classic vessel, or maintaining OEM reliability, accurate coolant temperature feedback is non-negotiable for engine longevity and efficiency.

Built to Veratron's marine-grade standards, this sensor operates across a 40° to 120°C range, covering both cold-start enrichment and high-load thermal management scenarios. The 3/8 – 18 DRYSEAL NPTF thread connection ensures a leak-free seal without requiring thread sealant tape, reducing installation labor and eliminating compatibility guesswork. The sensor's sealed construction resists moisture and corrosion, critical in saltwater or high-humidity environments where standard fittings fail prematurely. Its 1 lb weight and compact form factor allow discreet mounting on engine blocks, manifolds, or cooling lines without interfering with mechanical components.

Mechanics and engine builders rely on Veratron sensors for diagnostic accuracy during custom fuel map calibration, supercharger or turbo integration, and water-cooled conversion projects. The 3/8 – 18 NPTF standard threads directly into most aftermarket intake manifolds, thermostat housings, and coolant bypass blocks, making it the go-to choice for carbureted-to-EFI swaps and modern ECU retrofits. If you're experiencing drivability issues, erratic fan operation, or need precision temperature monitoring for dyno tuning, this sensor delivers repeatable, factory-grade readings that align your engine's behavior with your calibration intent.