GENUINE GM PARTS 12708719 Nitrogen Oxide Nox Sensor

( Brand: Genuine Gm Parts ), ( Manufacturer Part Number: 12708719 ), ( Manufacturer Warranty: 1 Year ), ( Type: Nitrogen Oxide )

Review GENUINE GM PARTS Nitrogen Oxide Nox Sensor

The **GM 12708719 Nitrogen Oxide (NOx) Sensor** is a precision-engineered emissions control component designed to monitor and regulate the output of harmful nitrogen oxides (NOx) in modern diesel-powered vehicles, ensuring compliance with stringent environmental regulations such as EPA and CARB standards. This high-performance sensor operates as part of the vehicle s Exhaust Gas Recirculation (EGR) and Selective Catalytic Reduction (SCR) systems, providing real-time feedback to the Engine Control Module (ECM) to optimize fuel efficiency, reduce emissions, and enhance overall engine performance. Constructed from durable materials, including corrosion-resistant housing and a robust sensing element, the GM 12708719 is built to withstand the harsh conditions of high-temperature exhaust environments while maintaining accuracy over extended periods. Its advanced electrochemical design allows it to detect even trace levels of NOx gases, enabling the ECM to adjust air-fuel ratios, EGR flow, and SCR dosing with precision, thereby minimizing particulate matter and reducing the vehicle s carbon footprint. Ideal for applications in heavy-duty trucks, commercial fleets, and diesel-powered vehicles equipped with diesel oxidation catalysts (DOC) and diesel particulate filters (DPF), this sensor plays a critical role in meeting emissions targets without compromising engine output. Whether used in original equipment or as a high-quality replacement, the GM 12708719 ensures reliable operation, helping to extend the lifespan of aftertreatment systems and prevent costly diagnostic trouble codes (DTCs) related to NOx-related malfunctions. Its seamless integration with GM s diagnostic and emissions control frameworks makes it a trusted choice for technicians and fleet managers seeking long-term reliability and compliance.

### **Pros and Cons of Buying a GM 12708719 Nitrogen Oxide (NOx) Sensor**

1. **Compatibility:** This sensor is designed specifically for General Motors vehicles, ensuring a proper fit and optimal performance in applications like the **2.7L Duramax diesel engines** (common in GMC Sierra, Chevrolet Silverado, and other GM trucks). Using an OEM or high-quality aftermarket part reduces the risk of compatibility issues.

2. **Reliability:** GM s original equipment sensors are built to meet strict emissions standards, meaning they are engineered for durability and longevity. A genuine or well-reputed aftermarket sensor should provide consistent readings, preventing false emissions failure codes.

3. **Emissions Compliance:** NOx sensors are critical for diesel engines to monitor and regulate nitrogen oxide emissions. A faulty sensor can trigger a **Check Engine Light (CEL)** or **Diesel Emissions Service Required (DESR) light**, leading to failed emissions tests or reduced performance. Replacing it with a known-good unit restores proper engine function and compliance.

4. **Prevents Further Damage:** A failing NOx sensor can cause the engine to run in **limp mode**, increasing fuel consumption, reducing power, or even damaging the **Diesel Particulate Filter (DPF)** or **Selective Catalytic Reduction (SCR) system** over time. Replacing it early avoids costly repairs.

5. **Warranty Coverage:** If purchasing from an authorized dealer or a reputable seller, the sensor may come with a warranty, offering peace of mind against premature failure.

6. **Cost-Effective Long-Term Solution:** While the upfront cost may seem high, replacing a faulty sensor is significantly cheaper than repairing related components (e.g., DPF, SCR system, or turbocharger) caused by prolonged sensor failure.

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1. **High Upfront Cost:** GM NOx sensors, especially OEM parts, can be expensive often ranging from **$300 to $600 or more**, depending on the vehicle model and labor costs if installed by a dealer. Aftermarket sensors may be slightly cheaper but vary in quality.

2. **Potential for Counterfeit Parts:** Buying from untrusted sellers (e.g., eBay, Craigslist, or unknown online marketplaces) risks receiving **fake or low-quality sensors**, which may fail quickly or not function correctly. Always purchase from **authorized dealers, reputable auto parts stores, or verified online retailers**.

3. **Installation Complexity:** NOx sensors are often located in **high-heat or harsh environments** (e.g., near the exhaust manifold or turbocharger). Improper installation (e.g., loose connections, incorrect torque) can lead to **premature failure or sensor damage**. Professional installation is recommended, adding to the cost.

4. **Recurring Issues with Aftermarket Sensors:** Some aftermarket NOx sensors may not last as long as OEM parts. Cheaper alternatives might require **frequent replacements**, offsetting initial savings. Researching brands (e.g., **Bosch, Delphi, or OE-quality aftermarket**) helps mitigate this risk.

5. **Diagnostic Challenges:** If the sensor was failing intermittently, the issue might persist even after replacement if the underlying problem (e.g., **exhaust leaks, faulty wiring, or contaminated sensor**) isn t addressed. A **full diagnostic check** (e.g., scanning for codes like **P2096, P2097, or P0420**) is essential before and after replacement.

6. **Limited Availability:** Depending on the vehicle year and model, finding the exact GM part number (12708719) may be difficult, especially for older trucks. Stock shortages or discontinued parts can delay repairs.

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The **GM 12708719 NOx sensor** is a **critical component** for diesel engines in GM vehicles, ensuring proper emissions control and engine performance. While the **upfront cost and potential for counterfeit parts** are drawbacks, the **long-term benefits** such as **preventing engine damage, maintaining compliance, and avoiding costly repairs** far outweigh the risks when purchased from a **trusted source** and installed correctly.

- **OEM or high-quality aftermarket sensors** (e.g., Bosch, Delphi, or GM-approved alternatives).

- **Professional installation** to avoid improper fitting or wiring issues.

- **Post-installation diagnostics** to confirm the sensor is functioning correctly.

If the budget is a concern, **comparing aftermarket options** (e.g., **Mopar, ACDelco, or reputable brands**) can provide a cost-effective solution without sacrificing quality.

**Buy the GM 12708719 NOx sensor (or a verified equivalent) from an authorized dealer or a trusted auto parts retailer** (e.g., **RockAuto, Advance Auto, or a local GM dealership**). If opting for aftermarket, choose a **well-reviewed brand** with a warranty. Have it **professionally installed** and **verify proper function** with a scan tool afterward. This ensures **reliability, emissions compliance, and long-term engine health**, making it a worthwhile investment.

Details:

Genuine GM Parts. Superseded Part Numbers This item may have been superseded from a different part number this manufacturer. This part fits vehicles made in the following years 2024,2025.

part #: 12708719 prices

• $153.14-$184.95

specifications emissyste:

• brand: Genuine Gm Parts
• mpn: 12708719
• manufacturer warranty: 1 Year
• type: Nitrogen Oxide

offer emissyste:

• quantity: 3
• started: February 19, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

shipping emissyste:

• cost: $0.00
• service: UPS Ground Saver
• type: Fixed
• class: Economy
• carrier: UPS
• transit: 4-7 Days

payments emissyste:

• credit card: Discover
• other
• wallet: Apple-pay

general emissyste:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts

seller emissyste:

• city: Chattanooga, Tennessee
• rating: 99.1%
• # reviews: 54241

returns emissyste:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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