Airtex 5S12434 Engine Coolant Temperature Sensor

The Airtex 5S12434 is a direct-fit Engine Coolant Temperature (ECT) Sensor engineered to OEM specifications for precise, reliable performance. This sensor continuously monitors engine coolant temperature and transmits that data to the engine control module (ECM), enabling the vehicle to optimize fuel delivery, ignition timing, and emissions control based on real-time thermal conditions.

Key Features:

• Direct OEM replacement — no modifications required for installation
• Manufactured to meet or exceed original equipment specifications
• Provides accurate coolant temperature signal to the ECM/PCM
• Helps maintain proper fuel mixture and ignition timing across all operating temperatures
• Durable construction designed to withstand high-heat, high-pressure coolant environments
• Correct connector and thread pitch for a precise, leak-free fit

A faulty coolant temperature sensor can cause hard starts, poor fuel economy, rough idle, failed emissions tests, and illuminated check engine lights. The Airtex 5S12434 restores proper sensor function and ensures your engine management system receives the accurate data it needs to run efficiently.