55500841 SNS771 Upstream Front Nitrogen Oxide Sensor Nox Sensor 1 for Chevrolet Colorado 2016-2019 2.8L l4, for GMC Canyon 2016-2019 2.8L l4 Diesel Turbocharged Upper Replace#55496922｜55495040

Sensor Specifications
Part Model/OE/OEM: 55500841 SNS771  55496922  55495040
Compatible with Car Model:
Fits for Diesel Car Chevrolet Colorado 2016-2019 2.8L l4, for GMC Canyon 2016-2019 2.8L  Diesel Turbocharged
Part Name: Diesel Exhaust Nitrogen Oxide Sensor NOX Sensor
Part Brand : WJIECO Part Origin: Made in China Packaging size: 18 * 12 * 6 cm
Logistics transportation weight (kg): 0.25-0.45 (1pcs)
Supply voltage: 10.8V-32V (12V for passenger cars) (24V for commercial vehicles)
Working current: 450 ± 50mA Heating power: 12W Communication protocol: CAN 2.0B
Measurement range (NOx): 0-2500ppm
Measurement accuracy (NOx):
0–100ppm：±10ppm ±10%
100–500ppm：±10ppm ±10%
500–1500ppm：±15ppm ±15%
1500–2500ppm：±30ppm ±30%
Measurement range (O ₂): 0-21% Measurement accuracy (O ₂): 0-5% ± 0.25%, 5-21% ± 5%
Response time (10% → 90%): NOx ＜ 3900ms O ₂ ＜ 4950ms Start time (ready): 100-120s
Probe operating temperature: -40 ℃~850 ℃ Controller operating temperature: -40 ℃~125 ℃
Exhaust pressure: ≤ 2.5bar Installation thread: M20 × 1.5

Buying guide:
1:Welcome to the official WJIECO Factory flagship store. When replacing a sensor, please purchase the part using your vehicle’s original OEM number. If you are unable to confirm your vehicle’s OEM number, please contact the WJIECO team immediately. We have a team of professional engineers available 24/7 to assist you with product selection, fault diagnosis and after-sales support.
2:Upon receiving the parts, please read the user manual before installation. If you encounter any issues, error codes, compatibility problems, or other related concerns, please contact the WJIECO customer service team promptly. We will assist you in resolving any vehicle or product issues; please do not return the items or request a refund directly. All product images are for display and reference purposes only.
3:The listed compatible vehicle models are for reference only and should not be used as the basis for purchasing parts. Please place your order based on your vehicle’s specific part number, OE number, and OEM number.

Advantages of WJIECO parts
1.Precise Monitoring:The Nox sensor monitors engine emission parameters in real time. By assisting the control system in reducing exhaust emissions and optimizing fuel supply efficiency, it significantly enhances engine combustion performance.Designed for reliable operation even under demanding conditions. Note: Avoid using in temperatures below -20°C to prevent material brittleness.
2.Premium Material and Performance:The nitrogen oxide sensor features a heat-resistant housing with excellent corrosion resistance and waterproof performance, ensuring fast response times and long-term stability. The control box is constructed from 6010 automotive-grade aluminum alloy, while the probe housing utilizes 304 stainless steel. The internal core components consist of a porous ZrO₂ (zirconia) ceramic tube and porous platinum (Pt) electrodes. Our Nox sensor chip is engineered with a brand-new high-temperature ceramic core, delivering precise detection. Designed for exceptional durability.
3.High-precision Probe with Safety Protection:This nitrogen oxygen sensor features a 5-pin connector with high-temperature-resistant PTFE (Teflon-type) wiring for secure operation. The platinum-based sensing probe delivers high-precision (±0.2°C) temperature measurement with excellent stability, making it ideal for industrial-grade temperature monitoring and data feedback. Designed to withstand extreme temperatures (100°C to 800°C), it provides reliable performance in harsh conditions. Note: Prolonged immersion (over 1 hour) may cause damage. Recommended replacement interval: 200,000-300,000 km.
4.Effortless Installation:Precision manufacturing that meets OE standards. Simply remove the old sensor and connect the new one, it is a plug-and-play solution and serves as a standard OEM replacement.