Walker 242-1021 Ignition Knock (Detonation) Sensor

Walker 242-1021 Knock Sensor Overview

Walker Products 242-1021 is an ignition knock sensor for select GM vehicles, including Buick Century, Chevrolet Impala, Pontiac Grand Am, and related applications. It is built to meet or exceed OEM standards and specifications, with fitment coverage for 1996-2005 model years across multiple makes and models.

Key Features

• Ignition knock (detonation) sensor for engine management systems
• Connector shape: round
• Connector gender: female
• Terminal type: blade
• Terminal gender: male
• Connector quantity: 1
• Terminal quantity: 1
• Length: 61.5000
• Wiring harness included: no
• Mounting hardware included: no

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946 and supports the automotive aftermarket with engineering, product management, and technical documentation. The Walker Products 242-1021 knock sensor is part of that engine management lineup and is manufactured to align with OEM-level requirements for accurate vehicle application coverage. This part cross-references Delphi AS10013 and Standard Ignition KS49 for the same application. Search terms such as knock sensor for 2000 Chevrolet Impala, ignition detonation sensor for 1996-2005 Pontiac Grand Am, and Walker 242-1021 replacement sensor are commonly used by buyers looking for this exact fitment family.

Common Symptoms This Part May Address

• Knock sensor fault codes
• Audible spark knock or detonation under load
• Reduced engine performance from incorrect timing control
• Check engine light related to knock sensor circuit issues
• Driveability problems caused by inaccurate engine knock feedback

Installation Notes

Verify connector style, terminal layout, and sensor length before installation. This application uses a round female connector with a single blade terminal and does not include a wiring harness. Confirm the vehicle’s original sensor location and inspect the connector and harness for corrosion or damage before replacing the part. Fits 1996-2005 Buick Century, N/A; Fits 2002-2005 Buick Rendezvous, N/A; Fits 2000-2005 Chevrolet Impala, N/A; Fits 1996-2005 Chevrolet Monte Carlo, N/A; Fits 2001-2005 Pontiac Aztek, N/A; Fits 1996-2005 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 1996-2003 Pontiac Grand Prix, N/A; Fits 1996-2001 Chevrolet Lumina, N/A; Fits 1997-1999 Oldsmobile Cutlass, N/A; Fits 1996-1998 Buick Skylark, N/A; Fits 1996-1998 Oldsmobile Achieva, N/A; Fits 1996-1998 Pontiac Trans Sport, N/A; Fits 1996-1997 Oldsmobile Cutlass Supreme, N/A; Fits 1996 Buick Regal, N/A; Fits 1996 Chevrolet Corsica, N/A; Fits 1996 Chevrolet Lumina APV, N/A.

Quality Assurance

Walker Products is an ISO 9001/IATF16949 certified manufacturer focused on engine sensors and fuel system components. The brand’s in-house engineering and technical support help maintain accurate application data and consistent production standards for parts like the 242-1021 knock sensor.