Walker 235-91203 Engine Crankshaft Position Sensor

Walker Crankshaft Position Sensor for Nissan

Walker Products FSK 235-91203 is an engine crankshaft position sensor built for direct-fit service on select Nissan applications. It uses a black housing, one male connector, and one mounting hole for a straightforward replacement on vehicles such as the Nissan Altima, Sentra, Frontier, X-Trail, and NV350 Urvan.

Walker Products FSK is the brand line focused on fuel system and engine sensor service parts, backed by Walker’s long history in automotive aftermarket components and engine management products.

Key Features

• Engine crankshaft position sensor for ignition and engine management service
• Walker Products FSK line
• Part number 235-91203
• Black sensor body with 1 male connector
• 1 mounting hole for direct replacement-style installation
• Fits select Nissan Frontier, Altima, Sentra, X-Trail, and NV350 Urvan applications
• Cross-reference: Standard Ignition PC464

Detailed Description

Walker Products 235-91203 is an OE-style crankshaft position sensor used to monitor crankshaft position and engine speed for accurate ignition timing and engine control. It is listed for 2001-2019 Nissan applications, including 2002-2006 Nissan Altima, 2002-2006 Nissan Sentra, 2002-2008 Nissan X-Trail, 2005-2019 Nissan Frontier, and 2014-2017 Nissan NV350 Urvan. This part number is also referenced as 235-91203 for catalog and service lookup purposes.

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and manufactures to meet or exceed OEM standards and specifications. The company supports its parts with engineering, product management, and technical documentation for accurate vehicle application coverage.

What It Helps Fix

• Crankshaft position sensor fault codes
• Hard starting or no-start conditions
• Intermittent stalling or rough running
• Incorrect ignition timing signals
• Engine misfire concerns related to crank signal loss

Installation Notes

Verify connector style, mounting hole location, and vehicle application before installation. This sensor uses one connector and one mounting point, so matching the original part configuration is important for proper fitment. For best results, inspect the harness and connector terminals for corrosion or damage before replacing the sensor.

Quality Assurance

Walker Products states that its engine sensors are manufactured to meet or exceed OEM standards and specifications. The company is ISO 9001/IATF16949 certified and supports its products with application data, instruction sheets, and technical support.