WALKER PRODUCTS SX-Q037 Exhaust Gas Temperature Egt Sensor

( Brand: Walker Products ), ( Manufacturer Part Number: SX-Q037 ), ( Manufacturer Warranty: 90 Days ), ( Ipn: C570 61-20 ), ( Placement On Vehicle: Emission Control Sensors ), ( Compatible Model: 2500 3500 Hd Silverado ), ( Compatible Year: 2021 2020 2019 2018 2017 ), ( Core Charge: Free No Core Charge ), ( Type: Exhaust Gas Temperature ), ( Universal Fitment: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Walker Products Exhaust Gas Temperature )

Review WALKER PRODUCTS Exhaust Gas Temperature Egt Sensor Chevrolet fits 2500 3500 2017–2021

The **Walker SX-Q037 Exhaust Gas Temperature (EGT) Sensor** is a high-performance, precision-engineered replacement part designed specifically for the **2017 2021 Chevrolet 2500HD and 3500HD** heavy-duty pickup trucks equipped with **Duramax diesel engines**. This sensor is a critical component of your truck s emissions and engine management system, ensuring optimal performance, fuel efficiency, and compliance with modern emissions regulations. Crafted from durable **stainless steel and high-grade thermocouple materials**, the SX-Q037 is built to withstand the extreme heat and pressure found in diesel exhaust systems, providing reliable readings that help maintain proper engine operation. Unlike generic or aftermarket alternatives, this sensor is **OEM-compatible**, meaning it fits seamlessly into your truck s existing wiring harness and mounting bracket, eliminating the need for costly modifications. Its **robust construction** includes a **threaded metal housing** for secure installation and a **long-lasting thermocouple probe** that delivers accurate temperature data to your truck s ECM (Engine Control Module), allowing for precise fuel injection timing, turbocharger protection, and exhaust aftertreatment optimization. Whether you re a fleet operator, a diesel enthusiast, or a professional mechanic, the Walker SX-Q037 ensures long-term reliability, reducing the risk of false EGT readings, engine damage from overheating, or premature wear on turbochargers and catalytic converters. With its **direct OEM replacement quality**, this sensor is the ideal choice for maintaining peak performance and extending the lifespan of your Duramax-powered Chevrolet truck.

### **Pros and Cons of buying a Walker SX-Q037 Exhaust Gas Temperature (EGT) Sensor for 2017 2021 Chevrolet 2500/3500 HD**

1. **Direct OEM Replacement** The Walker SX-Q037 is designed as an exact match to the original equipment sensor used in the 2017 2021 Chevrolet 2500/3500 HD trucks, ensuring compatibility with the vehicle s engine control system (ECM). This minimizes the risk of fitment issues or calibration errors.

2. **High-Quality Construction** Walker is a reputable aftermarket brand known for manufacturing reliable sensors with durable materials. The SX-Q037 is built to withstand the harsh conditions of exhaust gas exposure, reducing the likelihood of premature failure.

3. **Compatibility with Turbocharged Engines** The 2500/3500 HD trucks in this range (particularly those with Duramax diesel engines) rely on EGT sensors to monitor turbocharger performance and prevent overheating. A properly functioning sensor helps maintain optimal turbo efficiency and engine protection.

4. **Easy Installation** The sensor is designed for straightforward replacement, requiring minimal tools and no major modifications. Most users can install it themselves with basic mechanical skills, saving labor costs.

5. **Cost-Effective Alternative to OEM** While not an exact OEM part, the Walker sensor offers a more affordable option than purchasing a genuine Chevrolet replacement, often at a fraction of the cost without sacrificing performance or reliability.

6. **Widely Available** As a popular aftermarket part, the SX-Q037 is easy to find through online retailers, auto parts stores, and specialty diesel performance shops, reducing lead times for replacement.

7. **Potential for Improved Durability** Some users report that aftermarket sensors like the Walker SX-Q037 last longer than OEM units, particularly if the original sensor failed due to manufacturing defects or wear. This can be beneficial for trucks with high mileage or heavy-duty use.

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1. **Potential Calibration Issues** While rare, some aftermarket sensors may not be pre-calibrated to the exact specifications of the vehicle s ECM. If the sensor s output differs slightly from the OEM part, the truck s engine control module might interpret the readings incorrectly, leading to minor performance quirks (e.g., slight changes in turbo boost or exhaust backpressure). However, most modern vehicles adjust to aftermarket sensors without issues.

2. **Quality Variability** Although Walker is a trusted brand, the quality of aftermarket parts can sometimes vary depending on the batch or retailer. Purchasing from a well-reviewed seller (e.g., Amazon, RockAuto, or a local diesel specialist) helps mitigate this risk.

3. **Limited Warranty Compared to OEM** OEM sensors typically come with a longer warranty (often 3 5 years or unlimited mileage), whereas aftermarket sensors like the Walker SX-Q037 usually carry a 1 2 year warranty. This means the buyer assumes more risk if the sensor fails prematurely.

4. **No Original Equipment Branding** Some truck owners prefer OEM parts for peace of mind, especially if they plan to sell the vehicle later. While the Walker sensor is functionally identical, it lacks the "Chevrolet" branding, which might be a concern for resale or warranty considerations.

5. **Potential for Counterfeit Parts** As with any aftermarket component, there is a risk of purchasing a counterfeit or low-quality knockoff, particularly if buying from untrusted sellers. Always verify the seller s reputation and product authenticity (e.g., check for genuine Walker packaging and serial numbers).

6. **No Free Diagnostic Support** OEM parts often come with access to dealer diagnostics or support if issues arise. Aftermarket sensors may require the buyer to pay for diagnostic fees if problems occur post-installation.

7. **Minor Fitment Quirks** While rare, some users report that the sensor s mounting or wiring harness may not align perfectly with the vehicle s design. This is usually resolved with minor adjustments, but it can be frustrating during installation.

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The **Walker SX-Q037 EGT Sensor** is a strong aftermarket alternative to the OEM sensor for the 2017 2021 Chevrolet 2500/3500 HD trucks. It offers a balance of affordability, reliability, and compatibility while maintaining the performance-critical function of monitoring exhaust gas temperatures. For most owners, the benefits such as cost savings, ease of installation, and high-quality construction outweigh the minor drawbacks, particularly if purchased from a reputable source.

However, if budget is not a concern and you prioritize OEM support or resale value, the genuine Chevrolet sensor may be preferable. For DIYers, performance enthusiasts, or those on a tight budget, the Walker SX-Q037 is an excellent choice, provided it is sourced from a trusted retailer and installed correctly.

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- You need a cost-effective, high-quality replacement sensor.

- You are comfortable with aftermarket parts and have verified the seller s reputation.

- Your truck s ECM is compatible with aftermarket sensors (most modern vehicles handle this well).

- You prioritize ease of installation and durability over OEM branding.

- You want the full warranty and support from Chevrolet dealers.

- You plan to sell the truck soon and prefer original equipment parts.

- You suspect the original sensor failed due to a manufacturing defect and want to avoid potential calibration issues.

- Always clean the sensor s tip and mounting area before installation to ensure a proper seal.

- Use a high-quality thread locker (e.g., Permatex 24200) to prevent leaks.

- Reset the ECM after replacement if the truck s check engine light illuminates (this can often be done via a scan tool or by disconnecting the battery for 10 minutes).

- Monitor the sensor s readings post-installation to confirm it is functioning correctly (most modern scan tools can read EGT data).

Details:

Walker Exhaust Gas Temperature EGT Sensor for 2017 - 2021 Chevrolet 2500 3500 oo: Status: In Stock.

part #: sxq037 price

• $50.36

specifications emissyste:

• for models: 2500, 3500
• for makes: Chevrolet
• for years: 2017-2021
• brand: Walker Products
• mpn: Sx-q037
• manufacturer warranty: 90 Days
• ipn: C570 61-20
• placement on vehicle: Emission Control Sensors
• compatible model: 2500 3500 Hd Silverado
• compatible year: 2021 2020 2019 2018 2017
• core charge: Free No Core Charge
• type: Exhaust Gas Temperature
• universal fitment: Direct Replacement
• bundle description: 1 Pc Genuine Walker Products Exhaust Gas Temperature

offer emissyste:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: March 28, 2026
• availability: In Stock

seller emissyste:

• city: Indianapolis, Indiana
• # reviews: 638680
• rating: 99.6%

general emissyste:

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

returns emissyste:

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

shipping emissyste:

• transit: 3-6 Days
• service: Standard, Expedited
• type: Fixed
• cost: $0.00
• class: Standard, Expedited

payments emissyste:

• credit card: Discover
• wallet: Paypal
• other

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