Walker 242-1045 Ignition Knock (Detonation) Sensor

Walker Products 242-1045 Knock Sensor

Walker Products 242-1045 is an ignition knock sensor for select Toyota and Lexus applications. It is built to meet or exceed OEM standards and specifications, with fitment coverage for models such as the Toyota Camry, Tacoma, Tundra, and Lexus IS300.

Walker Products has supplied fuel system and engine management components since 1946. The Walker Products line focuses on accurate vehicle applications, technical support, and manufacturing backed by ISO 9001/IATF16949 certification.

Key Features

• Ignition knock (detonation) sensor for engine timing feedback
• Female connector with square connector shape
• 1 connector, 1 terminal
• Blade terminal type with male terminal gender
• No wiring harness included
• No mounting hardware included
• Walker Products part number 242-1045

Product Details

This knock sensor monitors engine vibration and sends a signal to the engine control system when detonation is detected. That input helps the ECU adjust ignition timing for smoother operation and proper engine management. The 242-1045 application coverage includes 2002-2006 Toyota Camry, 2001-2005 Lexus IS300, 2000-2004 Toyota Avalon, 1995-2004 Toyota Tacoma, 2000-2004 Toyota Tundra, 2000-2003 Lexus ES300, 2000-2003 Lexus RX300, 2001-2003 Toyota Highlander, 2000-2003 Toyota Sienna, 2000-2003 Toyota Solara, and additional Toyota and Lexus models listed in the fitment data. This part cross-references Standard Ignition KS46 and KS159 for the same application.

What It Helps Address

• Knock sensor fault codes
• Audible spark knock or detonation
• Erratic ignition timing control
• Check engine light related to knock sensor performance
• Driveability issues tied to incorrect engine feedback

Installation Notes

Verify connector style, terminal layout, and vehicle application before installation. Confirm the sensor location on the engine and inspect the harness connector for corrosion or damage. For fitment-based searches, this part is commonly selected for a Toyota Camry knock sensor replacement, a Lexus IS300 knock sensor replacement, or a Toyota Tacoma knock sensor replacement. Always match the part number 242-1045 to the vehicle application before service.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to OEM-level standards and supports production with in-house engineering, product management, and technical documentation. The company is ISO 9001/IATF16949 certified.