Denso 234-4748 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4748

Denso 234-4748 is an OE-style heated oxygen sensor built for specific downstream applications. It is engineered for exact replacement fitment and stable signal performance, with a threaded mounting design and a 4-wire male connector for direct installation on the listed vehicles.

Compatible with 2013-2020 Chrysler-family applications, this sensor is a direct-fit choice for drivers servicing a Fiat 500L, Fiat 500X, Jeep Renegade, or Dodge Dart. The Denso OE Style line focuses on factory-style fit and consistent sensor response, making 234-4748 a practical replacement for emissions and fuel-control maintenance.

Key Features

• Heated oxygen sensor for downstream placement
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 12.24 in. wiring harness length
• OE-style replacement built to match factory fit and function

OE Style Line Details

Denso’s OE Style line is built around direct replacement accuracy. The sensor is precision manufactured and tested to OE-level standards, with an aluminum oxide trap layer that helps protect the ceramic element from silicone and lead contamination. That construction supports consistent engine management feedback, fuel efficiency, and long service life in normal emissions-control use.

This part cross-references Chrysler 68142340AA and NTK 23057 for the same application. It is also commonly associated with Fiat 68142340AA, making Denso 234-4748 a relevant search match for downstream oxygen sensor replacement on Fiat 500L, Fiat 500X, Jeep Renegade, and Dodge Dart models.

What This Sensor Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect oxygen sensor signal readings
• Emissions system inspection failures tied to sensor performance
• Reduced fuel economy caused by inaccurate exhaust feedback
• Rougher engine operation from degraded sensor response

Installation Notes

Install as a specific-fit downstream oxygen sensor for the listed applications. Verify connector style, thread diameter, and harness length before installation. Because this is a threaded sensor, proper removal and installation tools are recommended to avoid damage to the exhaust bung or sensor body. Confirm the vehicle’s original sensor location and wiring routing before final tightening.

Fits 2014-2020 Fiat 500L, downstream. Fits 2016-2018 Fiat 500X, downstream. Fits 2015-2018 Jeep Renegade, downstream. Fits 2013-2016 Dodge Dart, downstream.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE-style standards for direct replacement accuracy and consistent performance. The design is intended to deliver the right fit for the listed applications the first time.