UPSTREAM NOX NITROGEN OXIDE SENSOR 5WK96637B COMPATIBLE WITH Q7 TOUAREG TD 059907807C 03L907807F

iFJF part No.: FJ-WZ-NOS01-6637B. Product Overview The iFJF NOx Nitrogen Oxide Sensor is a precision-manufactured OEM-compatible component engineered to restore proper exhaust aftertreatment function on compatible vehicles vehicles. Unlike generic replacements, this sensor uses high-grade sensing elements that deliver accurate real-time NOx readings to the ECU, optimizing DEF dosing, improving fuel economy, and ensuring emissions compliance. Key Features High-precision zirconia sensing element for accurate NOx measurement Plug-and-play OEM-compatible electrical connector no splicing required Stainless steel probe body withstands exhaust temperatures up to 800 C Factory pre-calibrated no dealer programming needed Fast response time for real-time SCR dosing optimization Helps restore fuel economy and eliminate derate mode 12-month unlimited mileage warranty Vehicle Compatibility Make Model Year Range Engine BMW 335d (E90) 2009-2011 3.0L M57 Various 328d xDrive 2014-2018 2.0L N47 BMW X5 xDrive35d 2009-2013 3.0L M57 Always verify fitment with your vehicle's specifications before ordering. Contact our support team for compatibility questions. Technical Specifications Brand iFJF SKU FJ-WZ-NOS01-6637B Sensor Type NOx Nitrogen Oxide Position Upstream (Pre-SCR) Connector OEM Pin-Compatible Warranty 12-Month Limited Installation Guide Disconnect battery. Locate NOx sensor on exhaust (upstream of SCR catalyst). Unplug connector and remove old sensor with 22mm O2 socket. Apply anti-seize to new sensor threads (avoid sensing tip). Thread in by hand, torque to 40-50 Nm. Reconnect and clear fault codes with scanner. Frequently Asked Questions Q: Will this clear my check engine light? If the CEL is due to a faulty NOx sensor, this replacement should resolve it. You may need to clear stored codes with an OBD-II scanner after installation. Q: Do I need dealer programming? No programming required. This sensor is factory pre-calibrated and operates immediately as a plug-and-play replacement. Q: How long should a NOx sensor last? Typically 80,000-120,000 miles. Excess soot, oil contamination, or poor fuel quality can reduce lifespan. Why Choose iFJF? Quality Assurance: Every product is tested to meet or exceed OEM specifications for fit, function, and durability. Fast USA Shipping: Orders ship from our domestic warehouses with full tracking typically delivered within 3-7 business days. Expert Support: Our US-based team of automotive specialists is ready to assist with fitment, installation, and technical questions. Hassle-Free Returns: 30-day return window on all iFJF products no questions asked. Direct-to-Consumer Value: Premium quality without the dealer markup save 30-60% vs. OEM pricing. Package Includes 1x iFJF Upstream NOx Nitrogen Oxide Sensor 5WK96637B Compatible with Installation hardware (where applicable) Quick-start guide Related iFJF Products iFJF NOx Sensor 5WK96637B for Audi Q7 TDI iFJF NOx Sensor 5WK97341A for Detroit DD13/DD15 Shop All iFJF Emission Sensors Helpful Resources Complete Guide to Diesel Aftermarket Maintenance How to Choose the Right Replacement Auto Parts Top 10 DIY Upgrades for Your Truck or SUV