Walker 235-1421 Engine Crankshaft Position Sensor

Walker Crankshaft Position Sensor for Audi and Volkswagen

Walker Products 235-1421 is an engine crankshaft position sensor built for direct replacement service on select Audi and Volkswagen applications. It uses a gray housing, oval 1-connector design, and 3 terminals to support accurate engine speed and crankshaft signal input for proper engine management.

Key Features

• Engine crankshaft position sensor for ignition and engine management systems
• Gray sensor body with oval connector shape
• 1 connector, 3 terminals, male connector / female terminal layout
• 1 mounting hole for secure sensor placement
• No mounting bracket included
• Walker Products 235-1421 for select Audi A4, Audi A6, Audi TT Quattro, and Volkswagen Passat applications

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards and specifications. The Walker Products line includes engine management parts such as cam and crankshaft sensors, and this 235-1421 crankshaft position sensor follows that approach for vehicles that require a precise crank signal. It is a direct-fit style replacement for applications including Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi TT Quattro, and Volkswagen Passat. This part cross-references Standard Ignition PC683 for the same application.

Common Issues This Sensor May Address

• Crankshaft position sensor fault codes
• Hard starting or no-start conditions related to crank signal loss
• Intermittent stalling or rough engine operation
• Misfire or timing-related drivability concerns
• Check engine light triggered by crankshaft sensor failure

Installation Notes and Fitment

Compatible With 1998-2005 Volkswagen Passat, sensor only; 2000-2005 Audi A4; 1999-2005 Audi A4 Quattro; 2002-2004 Audi A6; 2002-2004 Audi A6 Quattro; 2003-2006 Audi TT Quattro; 2005 Volkswagen Passat, sensor only; 2011 Volkswagen Clasico, sensor only. Additional fitment notes apply to 1999 Audi A4, 2000 Audi A6 Quattro, and 2002 Audi TT Quattro by VIN/chassis break. Verify connector shape, terminal count, and vehicle application before installation.

Quality Assurance

Walker Products is an ISO 9001 and IATF 16949 certified manufacturer with in-house product management, engineering, and technical support. The brand states its engine sensor components are produced to meet or exceed OEM standards and specifications.