213-4777 Engine Coolant Temperature Sensor

213-4777 Engine Coolant Temperature Sensor

Key Features

• Monitors engine coolant temperature to provide critical data to the engine control module.
• Ensures the engine operates within its optimal temperature range for performance and efficiency.
• Triggers high-temperature warnings on the instrument panel.
• Manufactured to original equipment (OE) specifications for fit, form, and function.
• Features a two-terminal electrical connector.

Replaces / Cross-Reference Part Numbers

• ACDelco: 213-4777
• General Motors (GM): 12639899

Compatibility & Fitment

• Designed as a direct-fit original equipment replacement for a wide range of General Motors vehicles.
• Please verify compatibility with your specific year, make, model, and engine before purchase.

When to Replace

• Inaccurate or fluctuating temperature gauge readings.
• Engine overheating or running too cool.
• Illuminated Check Engine Light (CEL) with relevant fault codes.
• Noticeable decrease in fuel economy.
• Difficulty starting the engine, especially when cold.

Installation Tips

• Allow the engine to cool completely before beginning the replacement.
• Partially drain the cooling system to a level below the sensor's location to minimize coolant loss.
• Clean the sensor's threaded port before installing the new component.
• Torque the new sensor to the vehicle manufacturer's specified value.
• After installation, refill and bleed the cooling system according to the service manual.