GM GENUINE PARTS Engine Coolant Temperature Sensor 213-4333 (12608814) OE-fit Precise Temp Sensing

The GM Genuine Parts 213-4333 (12608814) Engine Coolant Temperature Sensor is an original-equipment replacement that measures engine coolant temperature and delivers the same fit and performance GM specifies for your vehicle.

If your vehicle’s engine control module needs accurate coolant temperature data to adjust fuel delivery and ignition timing, this sensor restores that essential input. Built to the same standards used by General Motors, the GM Genuine Parts sensor replaces worn or failing factory units without compromise. It’s intended for technicians and DIYers who want an exact-match component engineered for compatibility, durability, and predictable operation in GM vehicles.

How does this sensor affect engine performance?

The coolant temperature sensor supplies a voltage signal to the engine control unit (ECU) so it can calculate fuel mixture and ignition timing. A correct sensor reading helps the ECU manage cold starts, idle stability, and emissions control. A faulty sensor can cause poor fuel economy, rough idle, or drivability issues.

• Provides precise temperature data to the ECU for accurate fuel trims
• Helps the vehicle reach optimal operating temperature quickly and reliably
• Prevents incorrect mixture enrichment or lean conditions from bad readings

What makes the GM Genuine Parts 213-4333 a reliable replacement?

This sensor is manufactured to GM’s original equipment specifications, giving you the same connectors, thread sizes, and thermal response as the factory part. Materials and tolerances match GM’s requirements so installation is straightforward and long-term performance is consistent. Choosing a GM-recommended replacement reduces the risk of fitment or calibration surprises.

• Engineered to GM OE specifications for fit, form, and function
• Durable construction for consistent temperature sensing over time
• Connector and thread compatibility for direct, bolt-in replacement

How do I install and test the coolant temperature sensor?

Installation is typically a bolt-in swap that requires draining a small amount of coolant and unplugging the electrical connector. After replacing the sensor, refill and bleed the cooling system as needed, then verify the ECU reads expected temperatures at idle and during warm-up. Use an OBD-II scanner or temperature meter for confirmation.

• Disconnect battery and allow engine to cool before servicing
• Drain coolant to a level below the sensor and remove the electrical connector
• Tighten to vehicle torque specs and check for leaks after refilling

Will this sensor work with my GM vehicle?

GM Genuine Parts are produced to match the original component used in specific GM platforms. Verify the part number (213-4333 / 12608814) against your vehicle’s service manual or parts catalog to ensure compatibility. If in doubt, consult a dealer or parts specialist with your VIN for confirmation.

• Part numbers: 213-4333 and 12608814 for reference
• Check VIN or vehicle application guide for exact fitment
• Contact GM parts support for compatibility questions

Who this is for: Technicians, independent repair shops, and detail-minded vehicle owners who need a plug-and-play coolant temperature sensor that matches GM’s factory design. It’s the right choice when you require predictable ECU behavior, correct engine warm-up characteristics, and an OE-level replacement that minimizes troubleshooting time and ensures proper fitment.