Hella Coolant Temperature Sensor

The Hella Coolant Temperature Sensor (also called an engine coolant temperature sensor, ECT sensor, or water temperature sensor) monitors the temperature of the engine coolant. It sends that information to the engine control unit (ECU) as an electrical signal. The ECU uses this signal to manage fuel injection, ignition timing, cooling fan operation, and idle control. Accurate readings help the engine run efficiently, start reliably, and keep emissions low.

Key Features:

• Provides precise coolant temperature readings to the engine management system
• Hella is an established original equipment supplier to the automotive industry, and its aftermarket parts are built to OE-level standards
• Designed for reliable performance under heat, vibration, and constant exposure to coolant
• Helps support smooth cold starts, stable idle, and good fuel economy
• Helps the ECU control cooling fans and the temperature warning or gauge circuit

A faulty coolant temperature sensor can cause hard starting, rough idle, poor fuel economy, black smoke, overheating, or a check engine light. Replacing a worn sensor with a quality Hella unit helps restore proper engine management and dependable operation. Choose the specific variant that matches your application from the options listed on this page.