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S11939 Genuine Cummins NOx Nitrogen Oxide Sensor For EPA13 ISC ISL Engines

S11939 Genuine Cummins NOx Nitrogen Oxide Sensor For EPA13 ISC ISL Engines

P/N: S11939 Manufactured by: Cummins
$499.00 - $499.00
$499.00
$499.00 - $499.00
$499.00
1 in Stock
Condition: New
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Product Overview

The S11939 is a genuine Cummins NOx nitrogen oxide sensor designed for EPA13 8.9L ISC and ISL engine applications. This sensor continuously monitors exhaust gas composition and provides NOx readings used by the engine control module to regulate emissions.

Product Features

The S11939 NOx sensor is manufactured to Cummins factory specifications for diesel emissions systems.

  • Detects nitrogen oxide content within the exhaust gas stream during operation.
  • Delivers sensor data required for engine emissions management strategies.
  • Supports SCR, DEF, and EGR system performance through continuous monitoring.
  • Helps maintain proper exhaust aftertreatment system efficiency and operation.
  • Designed for reliable communication with OEM engine control electronics.
  • Matches factory exhaust sensor mounting and electrical connections.

Technical Specifications

Condition New
Part Number S11939
Brand Cummins
Part Type NOx Nitrogen Oxide Sensor
Engine Applications EPA13 8.9L ISC/ISL
Weight 4.0 lbs


Installation Notes

The S11939 should be installed after inspecting the sensor mounting threads, exhaust bung, electrical connector, and wiring harness for contamination, corrosion, or heat damage. After installation, clear diagnostic trouble codes and verify proper sensor operation using the appropriate service scan tool.

Always verify part number, EPA13 engine application, sensor position, electrical connector type, and aftertreatment system configuration before installation.