Yuchai engine parts NOx sensor AZC14317200-01 in stocked

Built to monitor exhaust NOx concentrations with exceptional accuracy, this sensor adopts advanced zirconia-based sensing technology. It achieves a measurement range of 0-5000 ppm (parts per million) with an error margin ≤±5%, effectively distinguishing between NO and NO₂ components to provide real-time data for the ECU. The sensor’s response time is ≤200ms, enabling the ECU to instantly adjust urea injection quantity—ensuring SCR efficiency ≥95% and keeping NOx emissions below 80mg/kWh (National VI limit). A built-in heater (120W) rapidly brings the sensor to its optimal operating temperature (350℃) within 30 seconds of engine startup, eliminating cold-start detection delays and ensuring accurate readings even during short-distance trips

Engineered to endure the extreme conditions of diesel engine exhaust systems, the sensor features a durable, corrosion-resistant structure. The sensing element is protected by a double-layer stainless steel housing (316L grade) with a porous filter that prevents particulate matter (PM) from clogging the zirconia ceramic. The wiring harness uses high-temperature PTFE insulation (resistant to 200℃) and a braided stainless steel shield that reduces electromagnetic interference (EMI) from the engine. The M18 threaded connector uses a viton O-ring seal to withstand exhaust gas pressure up to 1.2MPa and vibration loads up to 20g (5-2000Hz, ISO 16750-3), ensuring no leakage or signal disruption during heavy-load operation

Designed for Yuchai engines operating in diverse regions—from cold northeast China to hot and humid southern areas—the sensor exhibits exceptional environmental resilience. It operates stably at ambient temperatures ranging from -40℃ to 120℃, passing 500 thermal cycle tests (-30℃ to 100℃) without performance degradation. The zirconia sensing element resists corrosion from sulfur dioxide (SO₂) and urea decomposition byproducts (ammonia, cyanuric acid), with no sensitivity loss after 1000-hour exposure to high-sulfur diesel exhaust. The sensor’s outer housing undergoes a passivation treatment, passing 1200-hour salt spray testing (ASTM B117) to resist rust in coastal or high-salt road conditions, ensuring a service life of ≥150,000km

Optimized for efficient fleet maintenance, the sensor features a user-friendly plug-and-play design. The M18×1.5 threaded base allows installation with a standard wrench, requiring a torque of 55-65N·m to secure—no specialized tools needed. The wiring harness terminates in a weatherproof AMP Superseal 6-pin connector that plugs directly into the SCR control module, eliminating on-site wiring and reducing installation time to 15 minutes per sensor. The sensor’s self-diagnostic function transmits fault codes (e.g., heater failure, low sensitivity) to the ECU, enabling technicians to quickly identify issues via diagnostic tools. With no moving parts and a sealed structure, it requires no regular maintenance—reducing fleet downtime and operational costs while ensuring continuous emission compliance