Lexus Knock Sensor 8961512090 89615-12090 OEM Replacement Part

This knock sensor is designed for Lexus ES350 (2007–2012, 3.5L 2GR-FE), RX350 (2007–2009), and GS350 (2007–2011); detects engine knocking and sends signal to ECU to adjust ignition timing to prevent engine damage and improve fuel economy. OEM numbers include 8961512090, 89615-12090, 8961512040. Replacement difficulty medium; operate on a cold engine and clean mounting surface to avoid debris affecting sensitivity. KLP brand provides reliable performance for bulk procurement.