
Walker 285-1018 Nitrogen Oxide (NOx) Sensor - Downstream
Walker Genuine OE NOx Sensor for Ram Diesel Emissions
Walker Genuine OE NOx Sensor Part Number 285-1018 is built for precise nitrogen oxide monitoring in modern diesel and gasoline emission systems. It is a direct-fit replacement for downstream applications on 2021-2024 Ram 2500 and 2021-2024 Ram 3500 models, with OE-style connectors and harness length for straightforward service.
Key Features
- Genuine OE line sensor for emission control and aftertreatment monitoring
- Downstream fitment for 2021-2024 Ram 2500 and 2021-2024 Ram 3500
- OE connectors and harness length for plug-and-play installation
- Built with Tier 1 OE supplier materials and manufacturing standards
- Gray connector color, oblong connector shape, 4-terminal design
- Designed for high-heat, vibration, and corrosive exhaust environments
Product Details
Walker Products Genuine OE NOx sensors are engineered to measure nitrogen oxide levels in selective catalytic reduction (SCR) systems, helping the vehicle’s aftertreatment system manage emissions accurately. On Ram 2500 and Ram 3500 diesel applications, correct NOx feedback supports proper SCR operation and helps protect downstream components such as diesel particulate filters. Part Number 285-1018 is a practical OE-level replacement when the original sensor fails or when emission system service is due.
The Genuine OE product line focuses on direct replacement fit, consistent sensor performance, and factory-style electrical connections. That makes 285-1018 a strong choice for technicians and owners who need a downstream NOx sensor for Ram 2500 and Ram 3500 models without modifying the harness or connector interface.
Common Issues This Sensor Can Address
- Check engine light related to NOx sensor performance
- SCR system fault codes tied to downstream emissions monitoring
- Incorrect nitrogen oxide readings affecting aftertreatment operation
- Reduced emission system efficiency from a failed downstream sensor
- Service issues on 2021-2024 Ram 2500 and 2021-2024 Ram 3500 diesel applications
Installation Notes and Tips
Verify the original sensor location before replacement, since this part is specified for downstream use only. Match the OE connector style and harness routing during installation, and inspect the exhaust-side mounting area for heat damage, corrosion, or contamination that could affect sensor performance. For best results, confirm the fault code and application before ordering Walker 285-1018.
Quality Assurance
Walker Products states that its Genuine OE NOx sensors are produced by Tier 1 OE suppliers using high-quality materials and precision manufacturing standards. This part cross-references Walker Products 285-1018 for the same application.
Original: $321.53
-65%$321.53
$112.54Walker 285-1018 Nitrogen Oxide (NOx) Sensor - Downstream
Walker Genuine OE NOx Sensor for Ram Diesel Emissions
Walker Genuine OE NOx Sensor Part Number 285-1018 is built for precise nitrogen oxide monitoring in modern diesel and gasoline emission systems. It is a direct-fit replacement for downstream applications on 2021-2024 Ram 2500 and 2021-2024 Ram 3500 models, with OE-style connectors and harness length for straightforward service.
Key Features
- Genuine OE line sensor for emission control and aftertreatment monitoring
- Downstream fitment for 2021-2024 Ram 2500 and 2021-2024 Ram 3500
- OE connectors and harness length for plug-and-play installation
- Built with Tier 1 OE supplier materials and manufacturing standards
- Gray connector color, oblong connector shape, 4-terminal design
- Designed for high-heat, vibration, and corrosive exhaust environments
Product Details
Walker Products Genuine OE NOx sensors are engineered to measure nitrogen oxide levels in selective catalytic reduction (SCR) systems, helping the vehicle’s aftertreatment system manage emissions accurately. On Ram 2500 and Ram 3500 diesel applications, correct NOx feedback supports proper SCR operation and helps protect downstream components such as diesel particulate filters. Part Number 285-1018 is a practical OE-level replacement when the original sensor fails or when emission system service is due.
The Genuine OE product line focuses on direct replacement fit, consistent sensor performance, and factory-style electrical connections. That makes 285-1018 a strong choice for technicians and owners who need a downstream NOx sensor for Ram 2500 and Ram 3500 models without modifying the harness or connector interface.
Common Issues This Sensor Can Address
- Check engine light related to NOx sensor performance
- SCR system fault codes tied to downstream emissions monitoring
- Incorrect nitrogen oxide readings affecting aftertreatment operation
- Reduced emission system efficiency from a failed downstream sensor
- Service issues on 2021-2024 Ram 2500 and 2021-2024 Ram 3500 diesel applications
Installation Notes and Tips
Verify the original sensor location before replacement, since this part is specified for downstream use only. Match the OE connector style and harness routing during installation, and inspect the exhaust-side mounting area for heat damage, corrosion, or contamination that could affect sensor performance. For best results, confirm the fault code and application before ordering Walker 285-1018.
Quality Assurance
Walker Products states that its Genuine OE NOx sensors are produced by Tier 1 OE suppliers using high-quality materials and precision manufacturing standards. This part cross-references Walker Products 285-1018 for the same application.
Product Information
Product Information
Shipping & Returns
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Description
Walker Genuine OE NOx Sensor for Ram Diesel Emissions
Walker Genuine OE NOx Sensor Part Number 285-1018 is built for precise nitrogen oxide monitoring in modern diesel and gasoline emission systems. It is a direct-fit replacement for downstream applications on 2021-2024 Ram 2500 and 2021-2024 Ram 3500 models, with OE-style connectors and harness length for straightforward service.
Key Features
- Genuine OE line sensor for emission control and aftertreatment monitoring
- Downstream fitment for 2021-2024 Ram 2500 and 2021-2024 Ram 3500
- OE connectors and harness length for plug-and-play installation
- Built with Tier 1 OE supplier materials and manufacturing standards
- Gray connector color, oblong connector shape, 4-terminal design
- Designed for high-heat, vibration, and corrosive exhaust environments
Product Details
Walker Products Genuine OE NOx sensors are engineered to measure nitrogen oxide levels in selective catalytic reduction (SCR) systems, helping the vehicle’s aftertreatment system manage emissions accurately. On Ram 2500 and Ram 3500 diesel applications, correct NOx feedback supports proper SCR operation and helps protect downstream components such as diesel particulate filters. Part Number 285-1018 is a practical OE-level replacement when the original sensor fails or when emission system service is due.
The Genuine OE product line focuses on direct replacement fit, consistent sensor performance, and factory-style electrical connections. That makes 285-1018 a strong choice for technicians and owners who need a downstream NOx sensor for Ram 2500 and Ram 3500 models without modifying the harness or connector interface.
Common Issues This Sensor Can Address
- Check engine light related to NOx sensor performance
- SCR system fault codes tied to downstream emissions monitoring
- Incorrect nitrogen oxide readings affecting aftertreatment operation
- Reduced emission system efficiency from a failed downstream sensor
- Service issues on 2021-2024 Ram 2500 and 2021-2024 Ram 3500 diesel applications
Installation Notes and Tips
Verify the original sensor location before replacement, since this part is specified for downstream use only. Match the OE connector style and harness routing during installation, and inspect the exhaust-side mounting area for heat damage, corrosion, or contamination that could affect sensor performance. For best results, confirm the fault code and application before ordering Walker 285-1018.
Quality Assurance
Walker Products states that its Genuine OE NOx sensors are produced by Tier 1 OE suppliers using high-quality materials and precision manufacturing standards. This part cross-references Walker Products 285-1018 for the same application.












