{"product_id":"walker-250-241327-oxygen-sensor-downstream-front","title":"Walker 250-241327 Oxygen Sensor - Downstream Front","description":"\u003ch2\u003eWalker OE Base Oxygen Sensor for Lexus RX450h\u003c\/h2\u003e\u003cp\u003eWalker OE Base Sensor 250-241327 is a heated narrow-band oxygen sensor built for direct replacement in emission control applications. It is engineered for the 2010 Lexus RX450h in the downstream front position, with the correct connector, terminal layout, and thread size for the specified application.\u003c\/p\u003e\u003cp\u003eFor Lexus RX450h owners searching for a downstream front oxygen sensor replacement, this Walker sensor is matched to the vehicle’s diagnostic feedback requirements and OE-style fitment. The 250-241327 part number is also identified as Walker Products 250-241327 for catalog and service reference.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated narrow-band oxygen sensor for emission control service\u003c\/li\u003e\n\u003cli\u003eDirect-fit application for 2010 Lexus RX450h, downstream front\u003c\/li\u003e\n\u003cli\u003e4-wire design with square female connector\u003c\/li\u003e\n\u003cli\u003eSpade terminals, 4 terminal count, male terminal gender\u003c\/li\u003e\n\u003cli\u003eM18 x 1.5 thread size for the specified mounting location\u003c\/li\u003e\n\u003cli\u003eWalker OE Base Sensor line for OE-style replacement coverage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eWalker Products develops engine management and oxygen\/air-fuel sensors as OE replacement parts for specific vehicle applications. The OE Base Sensor line focuses on application-specific fitment, so the sensor position, connector style, and electrical interface align with the vehicle’s ECU monitoring needs. On the 2010 Lexus RX450h, the downstream front oxygen sensor helps the engine management system monitor exhaust conditions after the catalyst and maintain proper diagnostic feedback.\u003c\/p\u003e\u003cp\u003eWalker Products 250-241327 is a practical choice when replacing a failed oxygen sensor on a Lexus RX450h. This part number is listed for the 2010 Lexus RX450h, downstream front, and should be matched to the vehicle’s original connector and mounting configuration before installation.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy caused by inaccurate exhaust feedback\u003c\/li\u003e\n\u003cli\u003eRough engine operation tied to sensor signal issues\u003c\/li\u003e\n\u003cli\u003eElevated exhaust emissions from a failing sensor\u003c\/li\u003e\n\u003cli\u003eDiagnostic trouble codes stored in the ECU for sensor faults\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eBefore replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals. Confirm the downstream front location on the 2010 Lexus RX450h and verify the M18 x 1.5 thread size, 4-wire layout, and square female connector match the original part. If the old sensor failed due to wiring damage, correct that condition before installing the new sensor.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Products has manufactured engine management components since 1946 and operates with ISO 9001\/TS 16949 quality systems. The OE Base Sensor line is built around application-specific replacement coverage for vehicles such as the Lexus RX450h, with cataloged fitment and diagnostic-system compatibility in mind.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52985192022197,"sku":"DKHD-250-241327","price":119.48,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_250241327_Fro.jpg?v=1787122284","url":"https:\/\/www.partcatalog.com\/products\/walker-250-241327-oxygen-sensor-downstream-front","provider":"PartCatalog","version":"1.0","type":"link"}