Walker 285-1008 Nitrogen Oxide (NOx) Sensor - Downstream

Walker Genuine OE NOx Sensor for Ram Diesel Emissions

Walker Genuine OE Part Number 285-1008 is a downstream nitrogen oxide (NOx) sensor built for precise emissions monitoring in diesel aftertreatment systems. It is a specific-fit replacement for 2019-2020 Ram 2500 and 2019-2020 Ram 3500 applications, with OE-style connectors and harness length for direct replacement service.

Key Features

• Part Number 285-1008 for downstream NOx sensor replacement
• Fits 2019-2020 Ram 2500, downstream
• Fits 2019-2020 Ram 3500, downstream
• Specific-fit design with OE connector and harness length
• Built for selective catalytic reduction (SCR) emission systems
• Engineered with OE-level materials and manufacturing standards
• Designed for diesel exhaust environments with heat, vibration, and corrosion exposure
• Pink sensor body, gloss finish, white female connector, spade terminal type

Detailed Description

Walker Products Genuine OE NOx sensors are produced to monitor nitrogen oxide levels in SCR-equipped emission systems. Accurate downstream NOx readings help the vehicle’s aftertreatment strategy manage emissions performance and protect downstream components such as diesel particulate filters. Part Number 285-1008 is a direct-fit solution for Ram diesel applications that require a downstream sensor with OE-style electrical connection and fitment.

Walker’s Genuine OE line focuses on replacement parts built to the same standards used by Tier 1 OE suppliers. For Ram 2500 and Ram 3500 owners, this means a sensor designed for clean integration into the factory emission system without custom wiring or fitment changes. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• NOx sensor fault codes related to downstream emissions monitoring
• SCR system performance issues caused by inaccurate exhaust gas readings
• Reduced aftertreatment efficiency in Ram 2500 and Ram 3500 diesel applications
• Emission system stress that can affect DPF protection and engine efficiency
• Fitment problems from worn or damaged OE-style sensor connections

Installation Notes and Tips

Verify the vehicle is a 2019-2020 Ram 2500 or 2019-2020 Ram 3500 with downstream sensor placement before ordering. Match the connector style, harness routing, and terminal configuration to the original sensor. Because NOx sensors operate in high-temperature exhaust locations, inspect the surrounding wiring, mounting points, and exhaust components during replacement.

Quality Assurance

Walker Genuine OE NOx sensors are manufactured by Tier 1 OE suppliers using high-quality materials and precision production methods. Part Number 285-1008 is built for dependable operation in demanding exhaust conditions and for direct replacement in factory-style emission systems.