{"product_id":"standard-ignition-s3091-ignition-knock-detonation-sensor-harness","title":"Standard Ignition S3091 Ignition Knock (Detonation) Sensor Harness","description":"\u003ch2\u003eIgnition Knock Sensor Harness for Toyota and Lexus\u003c\/h2\u003e\u003cp\u003eStandard Ignition S3091 is an ignition knock sensor harness built for select Toyota and Lexus applications. It uses a weatherproof sealed design with 18-gauge wiring and OE-style connector layouts to support a secure electrical connection in the engine bay.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number S3091 ignition knock (detonation) sensor harness\u003c\/li\u003e\n\u003cli\u003eFits select Lexus ES350, RX350, RX450h and Toyota Highlander, Venza, RAV4, Camry, Sienna, and Avalon applications\u003c\/li\u003e\n\u003cli\u003e35 cm harness length with 14-inch overall length\u003c\/li\u003e\n\u003cli\u003e18-gauge wire construction with 4-wire layout\u003c\/li\u003e\n\u003cli\u003e3 connectors with female and male terminals\u003c\/li\u003e\n\u003cli\u003eRectangle and square connector shapes for application-specific fitment\u003c\/li\u003e\n\u003cli\u003eWeatherproof sealed construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eStandard Ignition S3091 is an ignition knock sensor harness designed for direct replacement use on a range of Toyota and Lexus vehicles. It features a 350 mm harness length, 18-gauge wire, and a sealed connector design to maintain a dependable electrical path between the knock sensor and the engine control system. This part number is commonly searched as S3091 for Toyota Highlander, Toyota Camry, and Lexus RX350 knock sensor harness replacement needs.\u003c\/p\u003e\u003cp\u003eThis part cross-references ACDelco PT3868 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBroken, brittle, or heat-damaged knock sensor wiring\u003c\/li\u003e\n\u003cli\u003eIntermittent detonation sensor signal loss\u003c\/li\u003e\n\u003cli\u003eConnector fitment issues caused by worn terminals\u003c\/li\u003e\n\u003cli\u003eEngine warning lights related to knock sensor circuit faults\u003c\/li\u003e\n\u003cli\u003eDriveability problems tied to unstable sensor communication\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify connector shape, terminal style, and harness routing before installation. Confirm the vehicle application by year, make, and model, especially on Lexus ES350, Toyota Highlander, and Toyota RAV4 platforms. Inspect adjacent wiring, clips, and sensor connectors for heat damage or corrosion before connecting the new harness.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eStandard Ignition supplies replacement ignition and electrical components for service applications. S3091 is built with sealed connector construction and application-specific terminal configuration to support consistent fitment on listed Toyota and Lexus vehicles.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":52820790050997,"sku":"FBHK-S3091","price":29.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_S3091_FRO.jpg?v=1784529480","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-s3091-ignition-knock-detonation-sensor-harness","provider":"PartCatalog","version":"1.0","type":"link"}