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Mopar 56041887AA Oxygen SensorOE Quality 60-Day Returns
Part #: 56041887AA

Mopar 56041887AA Oxygen Sensor

5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Jeep, TJ and Wrangler
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Mopar Oxygen Sensor for Jeep TJ and Wrangler

Replace a failing upstream oxygen sensor with this Mopar oxygen sensor, part number 56041887AA. It is a direct-fit emission control sensor for select Jeep TJ and Jeep Wrangler models, with fitment covering before-catalyst front applications.

Key Features

  • Mopar OE replacement oxygen sensor
  • Part number 56041887AA
  • Before-catalyst front sensor application
  • Fits select 2001-2003 Jeep Wrangler and 2002-2003 Jeep TJ models
  • Built for emission control system service

Detailed Description

This Mopar 56041887AA oxygen sensor is used in the emission control system to monitor exhaust oxygen content ahead of the catalytic converter. Accurate sensor input helps the engine control module manage air-fuel calculations and maintain proper closed-loop operation. Compatible With 2001-2003 Jeep Wrangler, before catalyst front, except Emissions - U.S. 50 State; 2002-2003 Jeep TJ, before catalyst front, except Emissions - U.S. 50 State; and 2003 Jeep TJ, N/A position.

For buyers searching for a Jeep Wrangler oxygen sensor or a Mopar 56041887AA replacement, this part matches the listed front, before-catalyst applications only. Verify the emissions configuration before ordering, since U.S. 50 State vehicles are excluded from the Wrangler and TJ fitment notes shown here.

What It Is Used For

  • Replacing a failed upstream oxygen sensor
  • Addressing check engine light concerns tied to oxygen sensor faults
  • Restoring proper air-fuel feedback for engine management
  • Correcting drivability issues related to inaccurate exhaust readings
  • Servicing emission control diagnostics on Jeep TJ and Wrangler models

Installation Notes and Tips

Install this sensor only in the listed before-catalyst front location. Confirm the vehicle year, model, and emissions package before installation, and inspect the connector and harness routing for heat damage or corrosion. Use the exact fitment notes to match the application to your Jeep TJ or Jeep Wrangler.

Quality Assurance

Mopar OE replacement parts are built to match factory application requirements for the vehicles listed. This part cross-references no additional part numbers in the provided data.

This part fits 5 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2003JeepTJSport4.0LL6N/A
2003JeepWranglerX4.0LL6N/ABefore Catalyst front, except Emissions - U.S. 50 State
2002JeepTJSport4.0LL6N/ABefore Catalyst front, except Emissions - U.S. 50 State
2002JeepWranglerX4.0LL6N/ABefore Catalyst front, except Emissions - U.S. 50 State
2001JeepWranglerSport4.0LL6N/ABefore Catalyst front, except Emissions - U.S. 50 State

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

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