Upstream NOx Sensor for GMC Sierra 2500HD/3500HD 6.6L Duramax 2017–2019
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- 2017 GMC Sierra 2500 HD / 3500 HD (6.6L V8)
- 2018 GMC Sierra 2500 HD / 3500 HD (6.6L V8)
- 2019 GMC Sierra 2500 HD / 3500 HD (6.6L V8)
Product Overview
An upstream NOx sensor reports exhaust nitrogen-oxide levels to the diesel emissions system. When the sensor or its wiring fails, it may set a check-engine light, emissions fault or inducement warning. Match the upstream location and connector to your 6.6L Duramax; upstream and downstream NOx sensors are not interchangeable.
Before ordering, compare this exact assembly with the part currently installed. A similar name or model year does not guarantee the same mounting, connector, dimensions or equipment options.
Key Features & Performance
- Application: GMC Sierra 2500HD/3500HD 6.6L Duramax 2017–2019
- Purpose: When the sensor or its wiring fails, it may set a check-engine light, emissions fault or inducement warning
- High-accuracy sensing for optimal engine performance and emission control.
- Durable construction built to withstand harsh exhaust temperatures and conditions.
- Direct replacement design for a straightforward, plug-and-play installation.
Specifications
- Part Type: Nitrogen Oxide (NOx) Sensor
- Sensor Position: Upstream
- Engine Compatibility: 6.6L V8
- Condition: Brand New Aftermarket
Fitment & Installation Notes
Check the vehicle or equipment identification, original part number, mounting points and connector/drive configuration where applicable. Fitment lists identify candidate applications, not proof that every trim and production revision is identical.
Frequently Asked Questions
What should I check before ordering? Compare the original component and any part-number, side, engine, equipment or connector details shown above. If they differ, do not assume the item will fit.
Is this an OEM part? This listing is for an aftermarket replacement or accessory unless the product is expressly identified as genuine OEM. OEM numbers, when present, are references for matching, not a claim of OEM manufacture.
Part Summary
Upstream NOx Sensor for GMC Sierra 2500HD/3500HD 6.6L Duramax 2017–2019. Northline Parts listing for Replacement Parts. Application and fitment: 2017 GMC Sierra 2500 HD / 3500 HD (6.6L V8); 2018 GMC Sierra 2500 HD / 3500 HD (6.6L V8). Search terms: upstream nox sensor for gmc sierra 2500hd 3500hd 6 6l duramax 2017 2019; replacement component; repair part; fitment; compatibility; installation.