Walker 242-1035 Ignition Knock (Detonation) Sensor

Walker 242-1035 Ignition Knock Sensor

Walker Products 242-1035 is an ignition knock sensor for select Subaru applications, including 1990-1996 Subaru Legacy and 1995-1996 Subaru Impreza. It is built with a round female connector, blade-style male terminal, and a wiring harness included for a direct replacement setup.

Key Features

• Ignition knock (detonation) sensor for engine management diagnostics
• Fits 1990-1996 Subaru Legacy and 1995-1996 Subaru Impreza
• Round connector with 1 female connector and 1 male blade terminal
• Wiring harness included
• 114.4 harness length for application-specific routing
• Walker Products part number 242-1035

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 components such as oxygen sensors, throttle position sensors, cam and crankshaft sensors, fuel injectors, spark plug wires, and gaskets. Part number 242-1035 follows that OE-focused approach for Subaru Legacy and Subaru Impreza knock sensor replacement needs.

This part cross-references Beck/Arnley 158-0975 and Hitachi Automotive KNS0004 for the same application.

Common Issues This Sensor Can Address

• Knock sensor fault codes
• Engine pinging or detonation under load
• Reduced ignition timing control from a failed sensor signal
• Check engine light related to knock sensor circuit faults
• Rough drivability caused by inaccurate detonation feedback

Installation Notes

Verify connector style, terminal layout, and harness routing before installation. Confirm the sensor location on the engine and compare the original connector shape and terminal configuration to Walker 242-1035. Use the vehicle service procedure for torque and routing details, and inspect the harness path for heat or abrasion points during replacement.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components for the worldwide automotive aftermarket and is ISO 9001/IATF16949 certified. The company states its products are produced to meet or exceed OEM standards and specifications, with internal product management and engineering support behind application accuracy and technical documentation.