Standard Ignition TX318 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Nissan and INFINITI

Standard Ignition TX318 is an engine coolant temperature sensor built with a screw-on attachment method, a rectangular 1-connector design, and a 2-blade terminal layout. It uses a brass and plastic construction with a black and gold finish for direct replacement service on select Nissan and INFINITI applications.

Compatible with radiator-mounted and N/A applications across select Nissan LEAF, Rogue, Armada, Z, and INFINITI Q60, QX50, and QX55 models, TX318 supports accurate coolant temperature signal input for engine management systems. This part cross-references 226305WK0A and CTSA204 for the same application.

Key Features

• Standard Ignition TX318 engine coolant temperature sensor
• Screw-on attachment method for secure installation
• 1 female rectangular connector with plug/socket interface
• 2 male blade terminals
• Brass and plastic finish for sensor housing construction
• 12-volt electrical specification
• Fits radiator and N/A positions on select Nissan and INFINITI vehicles

Detailed Description

TX318 is an engine coolant temperature sensor engineered for vehicles that rely on precise coolant temperature feedback to the engine control system. On applications such as the 2021-2025 Nissan Rogue radiator position, 2018-2025 Nissan LEAF, 2025 Nissan Armada radiator position, 2023-2024 Nissan Z, 2017-2022 INFINITI Q60 radiator position, 2019-2022 INFINITI QX50 radiator position, and 2022 INFINITI QX55 radiator position, the sensor helps provide the temperature signal used for fuel, idle, and cooling strategy decisions. Standard Ignition TX318 is a direct-fit replacement option for service work where the original sensor has failed or is showing inaccurate readings.

What It Helps Address

• Incorrect coolant temperature readings
• Illuminated engine warning lights related to temperature input
• Hard starting or rough running caused by faulty temperature data
• Cooling fan operation concerns tied to sensor signal errors
• Fuel mixture and idle control issues from inaccurate coolant feedback

Installation Notes and Tips

Verify the connector shape, terminal count, and mounting style before installation. This sensor uses a screw-on attachment method and a single rectangular female connector with two male blade terminals, so matching the OE connector and thread style is important for proper fitment. Confirm the vehicle application by year, make, model, and position before replacing the original part.

Quality Assurance

Standard Ignition replacement sensors are built to meet service requirements for the listed applications and are intended for direct replacement use on confirmed fitment vehicles.