Elec. Temp Sending Unit

The AutoMeter electronic temperature sending unit is an essential component for vehicles equipped with electric water temperature gauges. This precision instrument measures coolant temperature and transmits real-time data to your dashboard gauge, giving you critical insight into engine operating conditions. Whether you're monitoring a stock cooling system or custom engine build, an accurate temperature sending unit is fundamental to preventing overheating and maintaining optimal engine performance.

This electronic sending unit features a 1/8 inch NPT male thread design, making it compatible with standard engine block coolant passages and aftermarket cooling system configurations. The AutoMeter 2258 operates using electrical resistance that varies with temperature change, allowing the connected gauge to accurately display coolant temperature across a wide operating range. The compact design—measuring 2.7 x 1.05 x 3.75 inches and weighing only 0.2 pounds—fits easily into tight engine compartment spaces, and the included fittings ensure straightforward installation without additional adapters or hardware.

Technicians and engine builders trust AutoMeter sending units for street cars, performance vehicles, and classic restorations alike. This unit integrates seamlessly with AutoMeter electric water temperature gauges and most aftermarket gauge systems that use standard electrical resistance-type senders. Installation is straightforward: thread the sender into a compatible coolant passage, connect the signal wire to your gauge, and ground the unit to complete the circuit. For anyone serious about engine monitoring and cooling system diagnostics, the AutoMeter electronic temperature sending unit delivers dependable accuracy and durability.