{"product_id":"hella-009403421-exhaust-gas-differential-pressure-sensor-front","title":"Hella 009403421 Exhaust Gas Differential Pressure Sensor - Front","description":"\u003ch2\u003eHELLA Exhaust Gas Differential Pressure Sensor\u003c\/h2\u003e\u003cp\u003eThe HELLA Exhaust Gas Differential Pressure Sensor monitors pressure differences in the exhaust system to help maintain accurate EGR operation and emissions control. Built with corrosion-resistant materials and a durable housing, this sensor is made for reliable performance in demanding underhood conditions. Part number 009403421 is a direct-fit style replacement for select BMW diesel applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMeasures exhaust pressure differential for EGR and emissions system feedback\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant construction for long-term durability\u003c\/li\u003e\n\u003cli\u003eBolted mounting type for secure installation\u003c\/li\u003e\n\u003cli\u003e3-pin connector design\u003c\/li\u003e\n\u003cli\u003e8 mm \/ 0.31 in diameter connections\u003c\/li\u003e\n\u003cli\u003ePrecise fitment for accurate sensor readings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Information\u003c\/h2\u003e\u003cp\u003eThis HELLA exhaust gas differential pressure sensor, part number 009403421, is engineered for select BMW diesel models including the 2014-2018 BMW 328d, 2014-2018 BMW 328d xDrive, 2014-2016 BMW 535d, 2014-2016 BMW 535d xDrive, and 2015 BMW 740Ld xDrive. It measures exhaust pressure differences so the engine control system can monitor exhaust flow and EGR-related operation with the correct signal input. The bolted design and 3-pin connector support a secure, OE-style replacement on the front position.\u003c\/p\u003e\u003cp\u003eThis part cross-references Bosch 16144 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Sensor Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFault codes related to exhaust pressure differential sensor performance\u003c\/li\u003e\n\u003cli\u003eIncorrect exhaust pressure readings in the EGR system\u003c\/li\u003e\n\u003cli\u003eEmissions control faults tied to sensor signal loss or drift\u003c\/li\u003e\n\u003cli\u003eDriveability concerns caused by inaccurate exhaust feedback\u003c\/li\u003e\n\u003cli\u003ePhysical damage or corrosion at the sensor body or connector\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation requires qualified personnel. Confirm the 3-pin connector, bolted mounting style, and 8 mm connection dimensions before replacement. For best results, inspect the exhaust system, wiring, and connector terminals for corrosion or damage before installing part number 009403421. Verify front-position fitment on the specific BMW model before service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eHELLA manufactures this sensor with corrosion-resistant materials and durable construction to support consistent operation in exhaust-system service. Precise fitment helps promote accurate sensor performance on the listed BMW applications.\u003c\/p\u003e","brand":"Hella","offers":[{"title":"Default Title","offer_id":52415099142325,"sku":"BFDP-009403421","price":41.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HL_009403421_Fro.jpg?v=1777799782","url":"https:\/\/www.partcatalog.com\/products\/hella-009403421-exhaust-gas-differential-pressure-sensor-front","provider":"PartCatalog","version":"1.0","type":"link"}