Temperture Sendin Unit 3/8 NPT

The Temperature Sending Unit 3/8 NPT is a precision engine management component designed to transmit real-time coolant temperature data to your vehicle's gauge cluster or engine control module. This compact sender is essential for any restoration project, performance build, or troubleshooting scenario where accurate temperature monitoring is critical. Whether you're installing a custom gauge package, upgrading your classic car's instrumentation, or diagnosing cooling system issues, a quality sending unit ensures reliable feedback and prevents costly overheating damage.

Engineered by Classic Instruments, this temperature sending unit features a 3/8 inch NPT male thread connection for secure, leak-free installation in standard engine block or radiator bosses. The unit operates by varying electrical resistance based on coolant temperature, a proven analog technology that integrates seamlessly with both vintage and modern gauge systems. Its compact 1.5 x 0.5 x 2 inch footprint and lightweight design (0.08 lbs) make it simple to install in tight engine bays without requiring extensive modifications or bracket fabrication.

Restoration enthusiasts, hot rod builders, and classic vehicle owners rely on this sender to maintain accurate temperature readings across all driving conditions. The 3/8 NPT thread size is the industry standard for most American and import vehicle cooling systems, ensuring compatibility with aftermarket gauge clusters, electronic dashboards, and OEM-style instrumentation. Installation is straightforward—simply thread the unit into the selected engine boss, connect the signal wire to your gauge, and ground the sender body for immediate operation. This component pairs ideally with Classic Instruments gauge sets and works with both mechanical and electronic temperature monitoring systems.