Cardone
Nitrogen Oxide (NOx) Sensor

Cardone 4N-3000 Nitrogen Oxide (NOx) Sensor - Downstream

Brand Cardone 4N-3000
Position Downstream
Color Metalic
Connector Gender Female
Connector Shape Rectangle with rounded edges
Connector/Terminal Configuration Plug
E-Waste Yes
Package Contents Sensor
Packaging Level Each
Product Condition New
Terminal Gender Male
Terminal Type Blade
Wire Gauge Measurement 14AWG
Wiring Harness Length (in) 23
Product line Nitrogen Oxide (NOx) Sensor
Fits Ram · 2 vehicles

Direct plug-and-play fit. Simple installation with no modifications needed.

Rust-resistant finish. Built for lasting durability in demanding conditions.

Real-world tested. Reliable performance from Cardone's NOx sensor line.

Cross-references Ram Trucks 5149216AB for the same application. See all 1.

$454.37Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $454.37
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Free returns within 60 days if it doesn't fit when fitment is verified.

Cardone NOx Sensor for Ram 3500

The Cardone 4N-3000 Nitrogen Oxide (NOx) Sensor monitors NOx output in diesel exhaust systems and reports elevated levels to the vehicle’s emissions controls. It is a direct-fit replacement for 2011-2012 Ram 3500 Downstream applications, helping restore proper emissions monitoring on Ram 3500 diesel models.

Key Features

  • Direct plug-and-play fit for straightforward installation
  • All components and hardware included to get the vehicle back to normal operating condition
  • Rust-resistant construction for added service life
  • Female connector with rectangular rounded-edge housing
  • 4-blade male terminals with 14 AWG wiring and 23-inch harness length
  • New sensor in metallic finish

Product Details

Built for diesel emissions control, the Cardone NOx Sensor line focuses on real-world performance and reliable signal reporting under everyday driving conditions. The 4N-3000 is engineered for downstream placement on 2011-2012 Ram 3500 trucks and is a direct replacement for Ram Trucks part number 5149216AB. This part cross-references Ram Trucks (e.g., 5149216AB) for the same application.

Compatible With 2011-2012 Ram 3500, downstream. Use this sensor when servicing the emissions system on Ram 3500 diesel trucks that require accurate NOx monitoring to maintain proper operation.

Common Issues This Sensor May Address

  • Check engine light related to NOx sensor performance
  • Incorrect NOx readings from the downstream exhaust sensor
  • Emissions compliance faults on diesel vehicles
  • Fault codes tied to exhaust aftertreatment monitoring
  • Intermittent sensor signal or degraded sensor response

Installation Notes and Tips

Verify the connector shape, terminal count, and harness length before installation. This sensor uses a female connector, a plug-style terminal configuration, and a 23-inch harness, so matching the original routing and connector orientation is important. For best results, confirm the downstream location on the exhaust system before replacing the original unit.

Quality Assurance

Cardone NOx Sensors are tested for real-world use and built to provide dependable emissions monitoring in diesel applications. The product is new and intended to restore normal operating condition on the specified Ram 3500 fitment.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2012Ram35006.7LL6DownstreamNitrogen Oxide (NOx) Sensor
2011Ram35006.7LL6DownstreamNitrogen Oxide (NOx) Sensor
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Ram Trucks — 5149216AB