Walker 235-91031 Engine Crankshaft Position Sensor

Walker Crankshaft Position Sensor for Ford and Mazda

Walker Products FSK 235-91031 is an engine crankshaft position sensor built for direct replacement service on select Ford, Mazda, and Mercury applications. It is a black sensor with one connector, one mounting hole, a male connector, and an included mounting bracket for a straightforward OE-style installation.

Walker Products FSK Details

The Walker Products FSK line focuses on engine management components engineered to meet or exceed OEM standards and specifications. Backed by Walker’s manufacturing, engineering, and product support resources, this crankshaft position sensor is intended for accurate signal delivery in vehicles such as the Ford Focus, Ford Escape, Ford Courier, Mazda Tribute, and related applications.

• Engine crankshaft position sensor for ignition and engine management service
• Black housing with 1 connector and 1 mounting hole
• Male connector design
• Mounting bracket included
• Walker Products FSK part number 235-91031

Vehicle Fitment

• Fits 2007 Ford Courier, N/A
• Fits 2001-2006 Ford Courier, N/A
• Fits 2001-2004 Ford Escape, N/A
• Fits 2000-2004 Ford Focus, N/A
• Fits 2001-2004 Mazda Tribute, N/A
• Fits 1998-2000 Ford Fiesta, N/A
• Fits 1995-1997 Mercury Mystique, N/A
• Fits 1995 Ford Contour, N/A

What This Sensor Helps Address

• Crankshaft position signal loss
• Hard starting or no-start conditions
• Intermittent stalling
• Rough engine operation caused by incorrect crank signal input
• Check engine light concerns related to crankshaft sensor performance

Installation Notes and Tips

Confirm connector style, mounting location, and application details before installation. Inspect the harness and connector terminals for corrosion, damage, or looseness, and verify the mounting surface is clean so the sensor seats correctly. Use the vehicle service information for proper diagnostic and installation procedures. Walker Products FSK 235-91031 cross-references Standard Ignition PC63 for the same application.

Quality Assurance

Walker Products has supplied fuel system and engine management components since 1946 and supports its aftermarket parts with in-house manufacturing, product management, engineering, and technical documentation. The company is ISO 9001/IATF16949 certified and states that its products are built to meet or exceed OEM standards and specifications.