Standard Ignition TS-633 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Ram and Jeep

Standard Ignition TS-633 is a direct-fit engine coolant temperature sensor for select Ram 1500, Ram 1500 Classic, Jeep Wrangler, Jeep Grand Cherokee, and Jeep Liberty applications. It uses a bolt-on attachment method with a square plug-in connector for straightforward replacement in the cooling system.

Key Features

• Direct-fit OE replacement for easier installation
• Bolt-on attachment method
• Female connector with 1 square plug-in connector
• 2 male blade terminals
• Built with materials selected to handle demanding engine bay conditions
• Individually tested for reliability before release

Detailed Description

The Standard Ignition TS-633 coolant temperature sensor monitors engine coolant temperature and sends that information to the vehicle’s control system. Accurate temperature input is important for fuel delivery, idle quality, cooling fan operation, and overall drivability. This sensor is a practical OE-style replacement for Ram 1500 and Jeep Wrangler cooling system service, as well as select Jeep Grand Cherokee and Jeep Liberty applications. This part cross-references Four Seasons 74005 and HOLSTEIN 2CTS0169 for the same application.

What It Helps Solve

• Incorrect coolant temperature readings
• Illuminated engine warning lights related to temperature sensing
• Poor cold-start or warm-up behavior
• Cooling fan control issues caused by faulty temperature input
• Rough idle or drivability concerns tied to inaccurate sensor data

Installation Notes and Tips

Fits 2014-2018 Ram 1500, N/A; Fits 2019 Ram 1500 Classic, N/A; Fits 2020-2023 Ram 1500, N/A; Fits 2025 Ram 1500, N/A; Fits 2020 Jeep Wrangler, N/A; Fits 2021 Jeep Wrangler, N/A, Located On Water Pump; Fits 2022-2023 Jeep Wrangler, N/A; Fits 2014-2019 Jeep Grand Cherokee, N/A; Fits 2005-2006 Jeep Liberty, N/A. Confirm the connector shape, terminal style, and mounting location before installation. On the 2021 Jeep Wrangler application, the sensor is located on the water pump. Standard Ignition TS-633 should be matched to the original sensor configuration for proper fitment.

Quality Assurance

Standard Ignition manufactures aftermarket electrical and engine management parts with complete quality control throughout the production process. The TS-633 coolant temperature sensor is made from high-quality materials and undergoes extensive testing to support dependable operation in demanding conditions.