Walker 242-1330 Ignition Knock (Detonation) Sensor

OE-Style Knock Sensor for Ford, Lincoln, and Mazda

Walker 242-1330 is an ignition knock sensor built as an OE replacement for gasoline engines that rely on precise detonation detection. It monitors engine vibration and sends the signal the ECU uses to adjust ignition timing in real time, helping protect the engine from spark knock and related drivability problems.

With factory-style fitment and a 4-terminal female connection, this Sensor Only design is made for direct replacement in the original threaded location. It is a practical choice for Ford F-150, Explorer, and Transit applications, along with select Lincoln, Mazda, and Mercury models.

Key Features

• Walker Sensor Only line for direct knock sensor replacement
• OE replacement design matched for frequency range, sensitivity, and electrical output
• Oblong connector shape with 1 connector and 4 terminals
• Male connector / female terminal configuration for factory-style connection
• Heat- and oil-resistant construction for engine-block and cylinder-head environments
• Direct-thread installation in the original sensor location

Detailed Description

Walker 242-1330 is engineered to detect the resonant frequency associated with engine knock so the control system can reduce ignition timing when detonation is present. That response helps maintain combustion control, reduce the risk of internal engine damage, and restore proper engine management when the original sensor has failed or set a fault code. This part number is used across a wide range of Ford, Lincoln, and Mazda platforms, including 2011-2023 Ford Explorer, 2011-2023 Ford F-150, and 2015-2025 Ford Transit-150/250/350/350 HD applications. It also serves select 2007-2016 Lincoln MKZ, 2007-2018 Ford Edge, and 2007-2015 Mazda CX-9 fitments.

This part cross-references Walker 242-1330 for the same application.

What It Helps Address

• Knock sensor fault codes such as P0325 or P0330
• Audible spark knock or detonation under load
• Incorrect ignition timing response from the ECU
• Reduced fuel economy caused by knock-related timing correction
• Rough drivability tied to failed knock detection

Installation Notes and Tips

Fits 2011-2023 Ford Explorer, N/A. Fits 2011-2023 Ford F-150, N/A. Fits 2015-2025 Ford Transit-150, N/A. Fits 2015-2025 Ford Transit-250, N/A. Fits 2015-2025 Ford Transit-350, N/A. Fits 2015-2025 Ford Transit-350 HD, N/A. Verify the connector shape, terminal count, and threaded mounting location before installation. Clean the mounting surface and inspect the harness connector for corrosion or damage so the replacement sensor can read engine vibration accurately.

Quality Assurance

Walker Products builds this knock sensor to OE specifications for fit, frequency response, sensitivity, and electrical output. The Sensor Only product line focuses on direct replacement components for emission control and engine management systems.