Walker 235-1321 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor for BMW

Walker Products 235-1321 is an engine crankshaft position sensor built for precise engine speed and crank position signal input. It is a direct-fit style replacement for select BMW applications, including BMW M3, M5, M6, 540i, Z8, 740i, 740iL, 750iL, 850Ci, and 840Ci coverage across model years listed below.

Walker Products has supplied automotive fuel system and engine management components since 1946, with manufacturing and engineering support focused on OEM-level specifications. The Walker Products line includes sensors and other engine management parts for repair and replacement needs in modern and classic vehicles.

• Black housing with 1 rectangular male connector
• 2 female terminals for signal connection
• 1 mounting hole for secure sensor placement
• Mounting bracket not included
• Compatible With select BMW crankshaft sensor applications
• Part number 235-1321 for catalog and cross-reference use

Detailed Product Overview

This crankshaft position sensor monitors crankshaft rotation so the engine control system can manage ignition timing and fuel delivery accurately. Walker Products 235-1321 is engineered to meet or exceed OEM standards and specifications, making it a practical replacement for BMW engine management repairs where crank signal quality is critical. This part cross-references Standard Ignition PC302 for the same application.

Common Issues This Sensor May Resolve

• Hard starting or extended crank time
• Intermittent stalling or sudden engine shutdown
• Check engine light related to crankshaft position signal faults
• Rough running caused by inconsistent engine speed input
• No-start conditions tied to crank sensor failure

Installation Notes and Fitment

Verify connector shape, terminal count, and mounting style before installation. This sensor uses a single rectangular connector, 2 terminals, and 1 mounting hole, with no mounting bracket included. Fits 2008-2013 BMW M3, N/A; Fits 2006-2010 BMW M5, N/A; Fits 2006-2010 BMW M6, N/A; Fits 2000-2003 BMW M5, N/A; Fits 2000-2003 BMW Z8, N/A; Fits 1997-2003 BMW 540i, N/A; Fits 1997-2001 BMW 740i, N/A; Fits 1996-2001 BMW 740iL, N/A; Fits 1995-2001 BMW 750iL, N/A; Fits 1995-1999 BMW 850Ci, N/A; Fits 1996-1997 BMW 840Ci, N/A; Fits 2011 BMW M6, N/A; Fits 1999 BMW M5, N/A. Confirm the original sensor connector and mounting location against the vehicle before service.

Quality Assurance

Walker Products manufactures engine sensors and related components with in-house product management and engineering support, and the company is ISO 9001/IATF 16949 certified. That quality focus supports consistent production, application accuracy, and technical documentation for BMW crankshaft position sensor replacement work.