NTK EF0171 Engine Coolant Temperature Sensor

NTK Engine Coolant Temperature Sensor EF0171

The NTK Engine Coolant Temperature Sensor EF0171 monitors coolant temperature and sends a signal to the engine control system for accurate temperature management. Built with a blade terminal, rectangular female connector, and 2-terminal layout, it is a direct-fit sensor for select Ford Super Duty and Excursion applications.

Key Features

• NTK Engine Coolant Temperature Sensor, part number EF0171
• Blade terminal type with rectangular female connector
• 2-terminal design for the specified OE-style electrical connection
• No wiring harness included
• Built to meet or exceed OE specifications
• Tested under thermal shock, vibration, and OBD verification conditions

Product Details

NTK expands its sensor coverage under the NTK Sensor Specialist line, drawing on OE experience and more than 80 years of automotive expertise from the NGK family of products. The EF0171 is engineered for import and domestic vehicle coverage and is manufactured to support accurate coolant temperature input for engine management systems. This part cross-references Standard Ignition TS-603 for the same application.

Compatible With 2004-2010 Ford E-350 Super Duty, N/A; 2003-2009 Ford F-250 Super Duty, N/A; 2003-2009 Ford F-350 Super Duty, N/A; and 2003-2005 Ford Excursion, N/A. If you are replacing a Ford E-350 Super Duty coolant temperature sensor or a Ford F-250 Super Duty engine coolant temperature sensor, EF0171 provides the specified OE-style fitment.

What It Helps Address

• Incorrect coolant temperature readings at the engine control system
• Illuminated check engine light related to temperature sensor faults
• Rough cold-start or warm-up behavior caused by inaccurate temperature input
• Fuel mixture and drivability issues tied to faulty coolant temperature data
• Cooling system monitoring problems on select Ford Super Duty and Excursion models

Installation Notes

Verify the connector shape, terminal count, and vehicle application before installation. This sensor uses a rectangular female connector with blade terminals and does not include a wiring harness. Confirm the existing connector condition and inspect the cooling system for leaks or contamination that could affect sensor performance.

Quality Assurance

NTK sensors are produced to OE-level standards and undergo validation testing that includes thermal shock, vibration, and OBD verification. The EF0171 is part of NTK’s technical sensor lineup for broad aftermarket coverage and consistent application-specific performance.