Walker 235-91021 Engine Crankshaft Position Sensor

Walker Crankshaft Position Sensor for GM Applications

Walker Products FSK 235-91021 is an engine crankshaft position sensor built for direct replacement in a wide range of GM and related applications. It uses a black housing, one male connector, one mounting hole, and an included mounting bracket for a clean, OE-style service fit.

Compatible With Buick Century, Chevrolet Impala, Pontiac Grand Am, and other listed vehicles, this crank sensor supports accurate engine speed and crank position input for proper ignition and fuel management. Part number 235-91021 is also cross-referenced to Beck/Arnley 180-0320 for the same application.

Key Features

• Engine crankshaft position sensor for ignition and engine management systems
• Black sensor body with 1 connector and 1 mounting hole
• Male connector design for direct electrical connection
• Mounting bracket included for application-specific installation
• Walker Products FSK line for OE-style replacement coverage
• Part number 235-91021 for catalog and fitment lookup

Product Line Details

Walker Products FSK covers engine management components built to meet or exceed OEM standards and specifications. Walker has supplied fuel system and sensor products since 1946 and supports its aftermarket catalog with in-house manufacturing, engineering, product management, and technical documentation. The company is ISO 9001/IATF16949 certified and supplies crankshaft sensors, cam sensors, oxygen sensors, injectors, and related engine management parts.

Detailed Description

Walker Products 235-91021 is a crankshaft position sensor for vehicles that mount the sensor on the side of the engine block or in the block location noted in the fitment data. It is listed for broad coverage across Buick, Chevrolet, Pontiac, Oldsmobile, Isuzu, Honda, GMC, and Cadillac applications from 1986 through 2005. Use this sensor when servicing crank signal faults on vehicles such as Chevrolet Malibu, Pontiac Grand Prix, and Buick Regal.

Common Issues This Part Can Address

• Crankshaft position sensor fault codes
• Intermittent no-start or hard-start conditions
• Stalling or rough running related to crank signal loss
• Erratic ignition timing or engine speed signal problems
• Check engine light triggered by crank sensor circuit faults

Installation Notes and Tips

Verify the connector style, mounting hole count, and engine-block location before installation. Several listed applications use side-of-block or engine-block mounting, so match the vehicle notes carefully. Clean the mounting surface and inspect the harness connector for corrosion or damage before connecting the new sensor. Confirm the exact vehicle year, make, model, and engine configuration against the fitment list for proper application selection.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company backs its parts with manufacturing, engineering, product management, and technical support resources, and operates under ISO 9001/IATF16949 certification.

• Fits 1995-2005 Buick Century, N/A
• Fits 2002-2005 Buick Rendezvous, N/A
• Fits 2000-2005 Chevrolet Impala, N/A
• Fits 1995-2005 Chevrolet Monte Carlo, N/A
• Fits 2001-2005 Pontiac Aztek, N/A
• Fits 1995-2005 Pontiac Grand Am, N/A
• Fits 1999-2005 Pontiac Montana, N/A
• Fits 1999-2004 Oldsmobile Alero, N/A
• Fits 1996-2004 Oldsmobile Silhouette, N/A
• Fits 1997-2003 Chevrolet Malibu, N/A
• Fits 1995-2003 Pontiac Grand Prix, N/A
• Fits 1995-2001 Chevrolet Lumina, N/A
• Fits 1997-1999 Chevrolet Malibu, N/A
• Fits 1996-1999 Oldsmobile Cutlass, N/A
• Fits 1995-1998 Buick Skylark, N/A
• Fits 1995-1998 Oldsmobile Achieva, N/A
• Fits 1996-1998 Pontiac Trans Sport, N/A
• Fits 1995-1997 Oldsmobile Cutlass Supreme, N/A
• Fits 1995-1996 Buick Regal, N/A
• Fits 1995-1996 Chevrolet Corsica, N/A
• Fits 1996 Chevrolet Lumina APV, N/A
• Fits 1994-1996 Isuzu Rodeo, N/A
• Fits 1995-1996 Oldsmobile Cutlass Ciera, N/A
• Fits 1990-1995 Chevrolet Corvette, N/A
• Fits 1994-1995 Chevrolet S10, N/A
• Fits 1994-1995 GMC Sonoma, N/A
• Fits 1994-1995 Honda Passport, N/A
• Fits 1992-1995 Isuzu Trooper, N/A
• Fits 1995 Oldsmobile Cutlass, N/A
• Fits 1994 Buick Century, N/A
• Fits 1994 Buick Regal, N/A
• Fits 1994 Buick Skylark, N/A
• Fits 1987-1994 Chevrolet Cavalier, N/A
• Fits 1987-1994 Chevrolet Corsica, N/A
• Fits 1993-1994 Chevrolet Lumina, N/A
• Fits 1990-1994 Chevrolet Lumina, N/A
• Fits 1994 Oldsmobile Achieva, N/A
• Fits 1994 Oldsmobile Cutlass Ciera, N/A
• Fits 1994 Oldsmobile Cutlass Cruiser, N/A
• Fits 1993-1994 Oldsmobile Cutlass Supreme, N/A
• Fits 1994 Pontiac Grand Am, N/A
• Fits 1993-1994 Pontiac Grand Prix, N/A
• Fits 1991-1994 Pontiac Sunbird, N/A
• Fits 1993 Buick Century, N/A
• Fits 1987-1989 Buick Century, N/A
• Fits 1993 Isuzu Rodeo, N/A
• Fits 1993 Oldsmobile Cutlass Ciera, N/A
• Fits 1986-1989 Oldsmobile Cutlass Ciera, N/A
• Fits 1988-1993 Oldsmobile Cutlass Supreme, N/A
• Fits 1988-1993 Pontiac Grand Prix, N/A
• Fits 1988-1992 Buick Regal, N/A
• Fits 1992 Pontiac Firebird, N/A
• Fits 1987-1991 Pontiac 6000, N/A
• Fits 1987-1991 Pontiac Tempest, N/A
• Fits 1987-1990 Chevrolet Celebrity, N/A
• Fits 1987-1989 Buick Skyhawk, N/A
• Fits 1987-1989 Oldsmobile Cutlass Cruiser, N/A
• Fits 1987-1988 Cadillac Cimarron, N/A
• Fits 1986-1988 Oldsmobile Firenza, N/A