WTA1204 is a model number for an ambient air temperature sensor, a car part manufactured by brands such as Carquest Premium and NTK. This sensor measures the outside air temperature for the vehicle's computer systems. 

Product Details

Carquest Premium Ambient Air Temperature Sensor WTA1204

 is a replacement part designed to meet or exceed original equipment (OE) specifications. 

• Function: It reports the outside air temperature to the engine control module (ECM) and the heating and cooling control systems, which use this data to regulate the cabin temperature and blower speed.

• Design: The sensor features a thermistor (dropping resistor) whose resistance changes with temperature, altering a 5-volt signal sent back to the vehicle's computer.

• Durability: According to the manufacturer, it is 100% thermo-shock and vibration tested and features a tin-plated lead frame to prevent corrosion.

• Compatibility: It is compatible with a wide range of import and domestic vehicles, particularly many models from the late 1980s through the early 2000s, including certain Jeep, Plymouth, Chrysler, and Dodge models. Users should check specific vehicle compatibility using the manufacturer's tools.