Dorman 505-5203 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for OE Fit

Dorman 505-5203 is an engine coolant temperature sensor built to match the fit and function of the original sensor on specified vehicles. It is designed for reliable temperature signal output and durable everyday service in cooling system applications.

Key Features

• Engine coolant temperature sensor for OE-style replacement
• Thread size: 1/2 NPT
• 2-terminal blade connection with oval male connector
• Black housing with 1.25 resistance specification
• Direct replacement for select vehicle cooling system sensor locations
• Part number 505-5203 for catalog and service reference

Detailed Description

This Dorman coolant temperature sensor is engineered to match the original sensor’s fit and function on specified applications, helping maintain accurate coolant temperature feedback to the engine management system. The 2-terminal blade design, oval connector shape, and 1/2 NPT thread size support straightforward replacement where the original sensor uses the same configuration. For buyers searching for an engine coolant temperature sensor for Dorman 505-5203, or a replacement coolant temp sensor for select make/model applications, this part provides the core specifications needed for a direct service match. This part cross-references 577.46617 and 2254800000 for the same application.

What It Helps Address

• Incorrect coolant temperature readings
• Illuminated engine warning lights related to temperature input
• Rough cold-start or warm-up fuel control issues
• Cooling fan operation concerns caused by faulty sensor data
• Hard starting or drivability problems tied to temperature signal errors

Installation Notes and Tips

Verify the connector shape, terminal count, and thread size before installation. This sensor does not include a wire harness, so reuse the existing harness connection where equipped. Confirm the replacement location and thread engagement match the original sensor on the vehicle before tightening to specification. Search terms such as Dorman 505-5203 coolant temperature sensor replacement for select make/model applications can help confirm the correct OE-style match.

Quality Assurance

Dorman designs this sensor to align with original equipment fit and function expectations and to provide dependable performance in cooling system service. For vehicle-specific searches, use the part number 505-5203 along with the make and model to confirm application details.