Walker 211-91052 Engine Cylinder Head Temperature Sensor

Walker Engine Cylinder Head Temperature Sensor

Walker Products FSK 211-91052 is an engine cylinder head temperature sensor for select Ford, Mercury, and Mazda applications. It is built for direct-fit service on vehicles such as the Ford Fusion, Mercury Milan, Ford Escape, Ford Focus, Ford Ranger, Mercury Mariner, and Mazda Tribute.

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on OEM-level fit and specification control. Part number 211-91052 is part of the Walker Products FSK line for service replacement needs.

Key Features

• Engine cylinder head temperature sensor for emission control and engine management service
• Walker Products FSK line replacement part
• Built to meet or exceed OEM standards and specifications
• Supported by Walker Products manufacturing, product management, and engineering resources
• Fits select 2001-2009 Ford, Mercury, and Mazda vehicles

Detailed Description

Walker 211-91052 is a replacement engine cylinder head temperature sensor used in applications where accurate temperature input is needed for engine control strategy. This sensor supports service on 2006-2009 Ford Fusion, 2006-2009 Mercury Milan, 2004-2008 Ford Escape, 2008 Mazda Tribute, 2005-2006 Mazda Tribute, 2005-2008 Mercury Mariner, 2003-2007 Ford Focus, 2005 Ford Ranger, and 2001-2003 Ford Ranger. If you are searching for a Ford Fusion cylinder head temperature sensor, Mercury Milan temperature sensor, or Ford Escape engine sensor replacement, this part number is a direct-fit option for the listed applications.

This part cross-references 5S1521 and SU2302 for the same application.

Common Issues This Part May Address

• Incorrect cylinder head temperature signal to the engine control system
• Temperature-related diagnostic trouble codes
• Hard starting or drivability concerns tied to sensor input
• Cooling strategy or fuel control issues caused by inaccurate temperature data
• Failed emissions-related inspection results linked to sensor faults

Installation Notes and Tips

Verify the vehicle year, make, and model against the fitment list before ordering. Confirm connector style and sensor location on the engine before removal, and inspect the harness for heat damage or corrosion during service. For best results, clear diagnostic codes after installation and recheck system operation.

Quality Assurance

Walker Products is an ISO 9001 and IATF 16949 certified manufacturer with a long history in fuel system and engine sensor production. The company states that its parts are manufactured to meet or exceed OEM standards and specifications, with technical support and application data maintained by in-house engineering and product teams.