Standard Ignition S2891 Nitrogen Oxide (NOx) Sensor Connector

NOx Sensor Connector for SCR Outlet Service

Standard Ignition S2891 is a nitrogen oxide (NOx) sensor connector built for diesel emissions system repairs where the original connector is damaged, corroded, or no longer sealing properly. It is a weatherproof sealed connector with a rectangular housing and 18-gauge, 4-wire construction for a direct electrical repair at the SCR catalyst outlet.

Key Features

• Standard Ignition S2891 NOx sensor connector for emissions system wiring repair
• Male connector with rectangular housing and blade-style female terminals
• Weatherproof sealed design for improved connection protection
• 18-gauge harness with 43 cm (17.25 in.) lead length
• 4-wire, 4-terminal configuration for SCR catalyst outlet applications
• 0-degree bend angle for a straight connector layout

Detailed Description

This Standard Ignition S2891 connector is used to restore the electrical connection at the NOx sensor in diesel exhaust aftertreatment systems. It is listed for 2014-2017 Ram 2500 SCR catalyst outlet, 2015-2017 Ram 3500 SCR catalyst outlet, 2011-2012 Ram 3500, 2012-2013 Chrysler 300, and 2011-2013 Jeep Grand Cherokee. For buyers searching for a Ram 2500 NOx sensor connector, Ram 3500 SCR catalyst outlet connector, or Chrysler 300 and Jeep Grand Cherokee emissions connector, S2891 provides the specified connector style and harness length for the application.

This part cross-references 68475529AA and EC2791 for the same application.

Common Repair Uses

• Broken or heat-damaged NOx sensor connector at the SCR catalyst outlet
• Corroded terminals causing intermittent emissions sensor signals
• Harness damage near the diesel exhaust aftertreatment system
• Connector replacement after wiring repair on Ram, Chrysler, or Jeep applications
• Sealing issues at the sensor plug connection

Installation Notes and Tips

Match the connector shape, terminal style, and wire count to the original harness before installation. Verify routing away from exhaust heat and moving components, and inspect the mating sensor side for terminal wear or contamination before reconnecting. Confirm vehicle-specific fitment for the exact year, make, model, and SCR catalyst outlet location listed above.

Quality Assurance

Standard Ignition supplies electrical service parts for repair applications, and this connector is built with a weatherproof sealed housing to support a secure connection in exposed underhood and exhaust-adjacent locations.