Drop In Replacement Engine Coolant Temperature Sensor 213963 12564512 Compatible With Buick Chevy GMC Isuzu Oldsmobile Saab For 2002 2005 Trailblazer Envoy Rainier Ascender Bravada And More Easy Install Plug And Play

Single GM-compatible engine coolant temperature sensor
✔️ OE-style, plug-and-play, 5-10 min install, single unit

This drop-in replacement engine coolant temperature sensor is designed for GM SUVs and trucks, including Trailblazer, Envoy, Rainier, Ascender, Bravada, and Saab 9-7x. It threads into the engine block or cylinder head and sends accurate temperature readings to the ECU to control fuel, ignition timing, and radiator fans.

✅ Replaces part numbers 213-963, 213963, 12564512
✅ Compatible with Buick Rainier (2004-2005), Chevy Trailblazer (2002-2005), GMC Envoy (2002-2005), Isuzu Ascender (2003-2005), Oldsmobile Bravada (2002-2004), Saab 9-7x (2005)
✅ OE-style threads: 3/4 deep socket required for removal and installation
✅ Easy 5-10 minute install with basic tools and no teflon tape needed
✅ Aftermarket replacement part, not genuine OEM

💡 What is an engine coolant temperature sensor used for in a vehicle?

It provides real-time coolant temperature data to the engine control unit, helping manage fuel delivery, ignition timing, and cooling fan activity for smooth starts and efficient operation.

- Provides precise coolant temperature data to the ECU for proper fuel delivery and ignition control - Helps fans engage at the right temperature to prevent overheating - A faulty sensor can trigger a Check Engine Light and cause hard starts or rough idle