{"product_id":"generic-lsu-4-9-wideband-o2-oxygen-sensor-5-wire-for-aem-30-4110-30-0300-fast-heated-response","title":"Generic LSU 4.9 Wideband O2 Oxygen Sensor 5-Wire for AEM 30-4110\/30-0300 Fast Heated Response","description":"\u003cstrong\u003eHigh-precision LSU 4.9 5-wire wideband oxygen sensor designed to deliver reliable AFR readings with AEM 30-4110, 30-0300 and 30-0310 controllers.\u003c\/strong\u003e\n\n\u003cp\u003eThis LSU 4.9 wideband O2 sensor (17025 0258017025) is a direct-fit, 5-wire lambda sensor engineered for inline air–fuel ratio monitoring with popular AEM UEGO and X-Series controllers. It provides fast response and stable output across a broad AFR range, making it suitable for tuning, diagnostics, and performance monitoring in gasoline and flex-fuel applications. The sensor uses a heated sensing element for quick startup and consistent temperature control, and the five-wire harness ensures accurate signal and heater control when paired with compatible controllers.\u003c\/p\u003e\n\n\u003ch3\u003eWill this sensor work with my AEM wideband controller?\u003c\/h3\u003e\n\n\u003cp\u003eYes — this LSU 4.9 is built to be electrically and functionally compatible with common AEM UEGO and X-Series modules, including part numbers 30-4110, 30-0300, and 30-0310. It matches the LSU 4.9 protocol and the heater wiring conventions those controllers expect, allowing plug-and-play integration in most installations when the controller is configured for an LSU 4.9 sensor.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with AEM 30-4110, 30-0300, 30-0310 and similar UEGO units\u003c\/li\u003e\n  \u003cli\u003eFive-wire connector supports heater and signal referencing\u003c\/li\u003e\n  \u003cli\u003eLSU 4.9 sensor protocol for direct O2-to-AFR translation\u003c\/li\u003e\n  \u003cli\u003eWorks with controllers that accept heated wideband sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow fast and accurate are the readings?\u003c\/h3\u003e\n\n\u003cp\u003eThe sensor is designed for rapid response and consistent measurements throughout the stoichiometric and rich-lean ranges. With a heated element it reaches operating temperature quickly and maintains stability, which reduces warm-up drift and improves real-time tuning feedback. Accuracy depends on controller calibration and installation, but the LSU 4.9 platform is a widely used standard for reliable AFR monitoring.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeated element for fast warm-up and stable temperature\u003c\/li\u003e\n  \u003cli\u003eResponsive output suits dynamic engine tuning and logging\u003c\/li\u003e\n  \u003cli\u003eConsistent performance across typical AFR ranges\u003c\/li\u003e\n  \u003cli\u003eAccuracy optimized when used with calibrated AEM controllers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the installation and wiring basics?\u003c\/h3\u003e\n\n\u003cp\u003eInstall the sensor in the exhaust stream where representative exhaust gases flow (usually pre- or post-turbo depending on setup) and avoid locations prone to pooling condensation. The five wires typically include signal, reference, heater positive, heater negative, and ground — match each to your controller wiring diagram and verify controller settings for LSU 4.9 operation before powering up.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMount in a threaded bung with correct thread size and torque\u003c\/li\u003e\n  \u003cli\u003eRoute wiring away from high heat and moving parts\u003c\/li\u003e\n  \u003cli\u003eConfirm pinout with your AEM controller manual before connecting\u003c\/li\u003e\n  \u003cli\u003eAllow sensor warm-up time for stable AFR readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will the sensor last and how do I maintain it?\u003c\/h3\u003e\n\n\u003cp\u003eService life varies with operating conditions, fuel quality, and exposure to contaminants. Proper installation, avoiding oil or silicon contamination, and not using the sensor where it’s exposed to continuous raw fuel or coolant will extend life. Replace the sensor when response slows, readings drift, or the controller reports sensor faults.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExpected life depends on driving conditions and contamination exposure\u003c\/li\u003e\n  \u003cli\u003eAvoid contact with oil, silicone, leaded fuel, and certain sealants\u003c\/li\u003e\n  \u003cli\u003ePeriodic checks of wiring and mounting improve longevity\u003c\/li\u003e\n  \u003cli\u003eReplace when slow response or unstable AFRs appear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis LSU 4.9 5-wire wideband O2 sensor is for tuners, racers, and technicians who need dependable AFR data for engine mapping, diagnostics, and performance monitoring. If you run AEM UEGO\/X-Series hardware and want a heated, OEM-style LSU 4.9 sensor with five-wire connectivity for precise control and fast response, this unit is a practical choice. It’s not a standalone meter — it requires a compatible wideband controller and proper installation to provide accurate air–fuel ratio information.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this sensor plug-and-play with AEM X-Series controllers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it’s designed for LSU 4.9 compatibility with AEM 30-4110, 30-0300, and 30-0310 when controller is set for LSU 4.9.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this sensor without a wideband controller?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, the sensor needs a compatible wideband controller (UEGO\/X-Series) to interpret and display AFR data.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":48085624422558,"sku":"B0C4FGPWZC","price":48.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/generic-lsu4-9-front-view.jpg?v=1785875099","url":"https:\/\/northtrailauto.ca\/products\/generic-lsu-4-9-wideband-o2-oxygen-sensor-5-wire-for-aem-30-4110-30-0300-fast-heated-response","provider":"North Trail Auto","version":"1.0","type":"link"}